I still surf Pinterest daily and often encounter published punchcard repeats that catch my eye.
Many need some interpretation and editing for use in specific machine models.
The first inspiration: 
is knit using 4 colors, alternating 2 rows of a base color, then rotating color changes for 4 rows for each of 3 contrasting ones.
Counting up from the bottom of the illustration after the marks for the typical two all-punched rows, it would appear this is a Studio punchcard, but starting row 1 as visible outside the card reader can simply be changed for any other brand knitting machine.
The every other stitch configuration is for an every other needle repeat used in early machines such as the Juki.
A full reference volume 
An illustration of the card use 
If using thicker yarns on a standard machine that grinds at the loosest tension, this configuration can retain the full design while knitting every other needle/EON.
The adaptation began using Mac Numbers, the repeat was isolated and traced, and the 12 blank columns were then hidden 
producing a result scaled in indexed B/W mode to 12X36 pixels. The tiled design, checking alignments. 
The proof of concept 
Periodically tuck stitch designs that appear to break the usual rules for the stitch are discussed.
This design is intended for a push-button machine capable of 24 stitch repeats, uses symbols in the associated chart interpreted to mean tuck loops form for 2 rows and knit along with all other stitches every third row. 
The working repeat is made up of 8 pixels in width, and 36 pixels in height. 
This next design is likely published for use with the Studio color changer, which is marked with letters for each color, 
rather than with numbers as in Brother models. 
It is intended as a slip-stitch. The bottom swatch relies on color changes every 3 rows, which would need to be performed manually.
In the elongated version, colors are changed using the color changer, every 6 rows. 
The design was first tested in thin yarns using the electronic 24X84 elongated PNG 
tested for alignment 
and displays interesting 3D variations, the purl side is remindful of shadow pleating 
Changing colors every odd number of rows is a tad fiddly.
The use of the color changer is not an option.
With the three yarns fed through the yarn masts, it became hard to keep them from twisting around each other. Ultimately, that problem was solved by hand-feeding one of the three colors with the cone on the floor, in front of the machine, as one would place yarns for weaving.
Brother knitters are familiar with yarn placements in the sinker plate.
Position A is for knitting when using only one color or for the ground color in fair isle patterning. There is a “gate”, which is closed, and the B color/contrast motif color is placed in that front position, knitting the yarn in needles preselected to needle position D on the next carriage pass.
It is tempting to leave the gate open when switching colors by hand frequently, and that may work for a while, providing tension is placed on the yarn manually to keep the yarn back. If at any point the yarn shifts forward (green arrow), with no needles in position D, stitches will be dropped.
Textured stitches can make for more complicated correction of errors or dropped stitches.
Taking the extra seconds to close the gate (red markings) after each color change avoids what became fondly known as “dropitis” in my classes. 
The proof of concept: two of the yarns used were acrylic, so steaming to reduce the curling of the swatch flattened the texture. 
At one point Studio published a newsletter with cover art composed of simple drawings, such as this, for #143, which spiked my curiosity, 
and led to these explorations:
the pattern and symbols refer to tuck stitch, but technically the design is executed using short rows and transfer techniques.
The programmed repeat selects needles, making tracking actions easier.
End needle selection is canceled.
No cam buttons are in use.
The knit carriage is set to hold.
Stitches on the single needles selected on rows, 2, 12, 22, etc, are transferred onto the needle on their left. The empty needle is then pushed back to A position, out of work, creating a ladder.
The groups of 3 preselected needles are pushed out to hold, the D position, before continuing.
After every 2 rows knit, a stitch on the left is pushed back into work, until lastly, the empty needle is returned to the B position.
All needles will then knit for one row filling in the empty needle with a loop and a full knit stitch on the next pass where transfers begin again. 
A brief summary of stitch manipulations 
Images of the work in progress, a small claw weight single claw hung on edge stitch helps keep side edges equal in length:
preselected needles initially manually brought to hold position after the first carriage pass to the right
after the second carriage pass to the left, with the first needle on the left in each group pushed back into work 
the second needle on the left in each group is returned to work
one needle in each group remaining in hold pushed back into work 
at this point the empty needles have been brought to the B position, 
single preselected needles have been transferred to the left, and a pass is made forming loops on the empty needles/ eyelets 
The original 18X30 repeat, some machine models and download software may require that it be mirrored horizontally, 
repeated to 44X30 with a planned distribution of plain stitches at sides, knit in 2/18 wool blends: 
Converting random transfer lace designs poses different challenges, and since the time at which the reference post was published, there have been several Gimp updates.
Lace designs contain few black and white pixels and, at times are brand-specific. Multiple transfer lace in Studio models begins with 2 blank rows, while Brother begins with a design row, and ends with 2 blank rows. As given, the inspiration repeat is designed for Studio/Silver Reed.
When using any program, ie Gimp, ArahPaint, or even Dak, the original scanned or screengrabbed design needs to be aligned horizontally and vertically to window borders for accurate conversions.
Gimp:
Before any scaling of images, establish stitch and row counts. In this case, they are published as being 16 stitches X 96 rows.
The process for converting the same lace design using Gimp 2.10.34 on the Mac, beginning work in RGB mode:
1. drawing a straight line to the side of the cropped image reveals a slight lean to the right
2. using Image, Transform, and Arbitrary Rotation -0.30 improves the alignment 
3. using the rectangle tool, crop to the borders of the published image.
In this instance, the cropped image measuring 199X938 pixels is at first scaled to multiples of 10 for both width and height, note the broken chain link
4. 160X960 pixels. 
5. Image mode is changed to B/W indexed, and the image is scaled once more to 16X96, the size of the expected repeat, note the intact chain link 
6. the final repeat, when studied, matches that from the results in the previous post 
1: the result using ArahPaints tools, including its guess weave from grid, compared to
2: the Gimp final image and
3. borrowed from the previous post illustrating other considerations before actual knitting, 
which include:
if using the repeat on Brother machines, the first 2 blank rows of the design are shifted to the top.
The 16-stitch design width makes it suitable only for electronic models.
The final PNG is actually downloaded as a fair isle pattern while maintaining the required needle selection for lace, and the knit carriage remains set to knit throughout while the lace carriage selects and transfers.
The machine, depending on the model, may by default mirror the result vertically, so the final PNG can be mirrored and saved as here, prior to knitting on the 930, 
or the mirror function in the machine may be used after programming.
I prefer to save my files in the orientation required for the actual knitting as a means to avoid confusion or errors.
Working in Arahpaint, rotating an image turns it on its center point. To rotate a layer, selection, or image, from the Image menu, choose Rotate. 
Selections can be made at offered angles, or specified degrees can be entered in the degree field, or select an area, move the pointer outside the bounding border, and then drag on any one of the small boxes at each corner while pressing the left mouse button. 
To align the image,
1. load the lace inspiration
2. choose Image, select Rotate Image, and draw a line that follows the orientation of the image. The color will be based automatically on the palette being used, and altering the pencil pixel size or color has no effect.
The program then rotates the image and will inform you of the rotation angle, and the drawn line becomes straight.
To confirm alignment, click the OK or Close button in the Rotate Image window.
3. use the rectangle tool to select the content for the full design repeat, and crop the aligned image to the selection. 
4.-9. continue with the steps using the tool Guess Weave from Grid, producing the same final PNG. In summary, they are:
4. crop the selected image to size
5. change the color palette to 8-bit, adjust background and foreground colors
6. reduce the number of colors to B/W, adjust the threshold, and set the number of colors to 2
7. the resulting image
8. use the guess weave from the grid tool, crop the bounded image to the selection, magnify the results to visually check the repeat, and save the PNG if satisfied
9. the final 16X96 pattern design repeat, matching the Gimp result. 
The associated swatch 
This Pinterest find is credited to Tatiana Demina, and is intended for use on Studio punchcard machine models. 
Studio machines are capable of transferring and knitting in single carriage passes. Studying the image of the card, it can be seen that there are no blank rows anywhere, and punched holes on alternate rows indicate transfers alternating first to the left, and then to the right.
The swatch was knit using the same technique described recently in the post Unconventional uses for punchcards 2: thread lace cards for “filet” mesh
The original 24X56 design 
was lengthened X2 to, shown here also doubled in width to 48X112 
to match the direction of the transfers, the hint offered in the inspiration source can be followed down to indicate the first row of transfers need to be made to the right, 
hence the knitting begins with the knit carriage on the left, the lace carriage on the right. As the LC moves to the left it preselects needles, and as it returns to the right it transfers them to the right.
The LC is removed from the knit bed.
The KC knits a single pass to the right and remains there.
The LC is returned to the knit bed on the left, preselects needles on its pass to the right, and transfers them to the left as it returns to that side, and is removed from the bed.
The KC knits one row to the left and stays there.
The LC is returned to the bed on the right and the process is repeated.
Preselection of needles is made by the LC toward the knit carriage, transfers are made away from it.
Whether the repeat needs to be mirrored again may depend on the machine model or the software used to download the file to it.
The direction of the first row of transfers provides the necessary clue, they need to be to the right. If to the left, mirror the pattern horizontally and begin again.
The swatch was knit in a wool-rayon blend, the results point to the difference in appearance and gauge with a change in color and type of yarn used when compared to the inspiration image 
The context for this can be found in To mesh or not to mesh 8: more Numbers meet Gimp
the 60X74 png 
and the proof of concept 
Category: Brands other than Brother
Passap Duomatic and Deco pattern musings
My exposure to Duomatic knitting was limited to a few months in 1997 when I had the opportunity to travel to Cochabamba, Bolivia, to attempt to teach the native knitters in a cooperative to use patterning on their Duomatics and learned as many basics as I could.
Since then, any such personal learning has been unused and nearly completely forgotten.
I still own an E 6000.
Out of habit, in terms of Brother knitting, I still travel between patterning for punchcard machines and electronic ones and I have had a continued interest in interpreting pattern directions from manuals and pubs intended for other brands.
If the ultimate goal is DIY on any model, it is useful to first understand how published designs or built-in console patterns form the designs into knit images and textures.
Youtube offers many videos for those who prefer learning in that format, some are excellent and easily found.
I tend to knit like I cook, with lots of recipes in front of me, deciding what I want to use from any of them, and then “going for it” in terms of interpretation and execution. The process is made possible by the fact that many manuals and pattern books are now available for free online ie. for the Duomatic.
Some people offer items normally free on such a website for a fee on for-sale sites or their web pages. Before purchasing them, a quick search will reveal the free file resources.
The information here is very abridged, intended to introduce some of the specific machine concepts to knitters who may be new to the brand.
Some references for building a Passap pattern and instruction library for home study:
Passap stitch Pattern book #2 for Passap Duomatic and Passap 12 
Its advice on maintaining neat edges:
The Duomatic 80 manual
Passap Duomatic 80 and Duomatic S Stitch Patterns 
Some basics in adding automated patterning:
the Deco is an accessory composed of four separate parts that combine to help with automatic pattern selection on Passap model machines capable of accepting it.
The deco selector selects the pushers for the pattern and trips the card to rotate every 2 rows (Deco 2) or every 4 rows (Deco 4).
The card reader holds and advances the card-sensing feelers of the reader that indicate which pushers are to be selected and has windows that reveal the card row number.
The sensing feelers respond to perforations on the card.
The rack/ rail holds the reader and has markings to indicate the center of the needle bed. Patterning is in 40-stitch increments.
The cards transfer the designs to the selector, can be overlapped for continuous designs, and are assigned letters in alphabetical order to indicate what stitch type can be executed using them.
From the manual, not intended as full instructions, only as a beginning in comparing design differences and language used in the different models: 
Guide to settings for designs provided with the cards supplied with the accessory 
A minimum of 36 rows are recommended for a continuous design.
The trip cam for the row counter is placed at the left edge of the knitting.
To begin patterning, a pusher is brought out of the rail and placed under each needle in use, the deco selector is set to 0, and make sure the red dot is showing.
Move the selector from left to right to preselect the pushers for the first design row, set the locks for the planned stitch type, press any arrow keys needed, and begin knitting according to published suggestions.
Clear end needles with each pass.
As each row is knit pushers for the next row of knitting are preselected, akin to Brother needle preselection.
Three rows of squares are punched at the top and bottom of each card for the overlap in a continuous design or for joining cards.
The width of the design repeats must number factors of 40 ie 2, 4, 8, 10, 20, and 40 vs those for Japanese models of 2, 4, 6, 8, 12, 24.
Where the card reader is placed on the slotted rack controls where the pattern occurs on the knit fabric.
Isolating motifs can be achieved by placing isolation pins from right to left in the slotted rack, five are supplied but even more may be used.
Double letters indicate double bed fabrics with lock settings that may not match on the front and back for stitch type or arrow-key selections.
From: 
A 106-page resource, written by Bernadette A. Ernakovich, and available for download purchase is an excellent guide to exploring the qualities achieved by changing lock settings on the hand, feel, look, and shape on the original design, found in the simple triangle card #77 in the basic set 
The card in place, as illustrated on page 9
The repeat charted 40X40
Blank punchcards appear to be numbered in increments of 2 on one side and 4 on the other with numbers in an order reflecting the fact that the card is used upside down 
I use Mac Numbers for generating my spreadsheets, this is its export of the document to Excel format that may be useful for editing and drafting DIY designs: deco card
Long stitch Passap and Brother DBJ design using thick and thin yarns
In browsing through old photos I came across one of this swatch knit on the Passap eons ago, in a slightly textured unknown fiber, and a thin white one on a small cone with lost fiber markings. 
The find led me to attempt a similar knit using my 930.
The flower image # 1228 
is usable as published in variations for single bed knitting on the Passap ie using Tech 179, or on the Japanese knitting machines using the built-in KRC separation for 2-colors DBJ.
The double bed fair-isle techniques on the Passap use a default color separation where each color in each design row knits twice.
The console performs the separation, but to achieve the same result in Brother models, the manual color separation can be performed using Gimp without any other software.
A: the chosen file, 20X20B: scaled in length X2, to 20X40
C: color inverting every other row beginning with an all-white pixel row 
D: scaling the file X2 in length to 20X80
choosing a black row start planned in the background color by color inverting the png 
E: taking into consideration that the planned DBJ settings will elongate the design, the 20X80 file is scaled in width X2 to 40X80 
Knitting the swatch:
the thin white yarn simply refused to knit on the 930 without breaking. The problem can sometimes be solved by adding a second thread, which in this case, is a 3,000-yard monofilament serger thread, both are hard to see and slippery.
The way the yarn is picked up and carried varies with the knitting machine models’ color changers.
The yarn when using the Brother double bed color changer is picked up and swapped out in the ribber arm, 
while in Passap models, the colors are threaded into individual feeding eyelets which are swapped out in any sequence needed in the front lock. 
Some of the yarn-feeding issues in small or large cones can be solved by “putting a sock” on the cones, no matter their size. The manufacturer sometimes supplies the latter, but DIY versions can be segments of pantyhose, foam sleeves used to protect some of the exotic fruits in supermarkets, covers for flowers until they are used in arrangements, and at times simply a plastic bag.
My arrangement, with the threads on top of the machine table, and fed through the same side of the yarn mast. 
The first preselection row is from right to left
The ribber is set to knit in both directions throughout
The first and last needles are in work on the ribber
Colors are changed every two rows
The backing will be striped, with each color knitting for 2 rows, referred to as striper backing in many pubs.
Pattern knitting begins COL, set the knit carriage to slip in both directions
The proof of concept: 
The matching technique using the settings for knitting (N) on the back lock and slip (LX) on the front lock, for striper backing is 183: 
knit on 30 stitches, but less than full repeat in height.
With some understanding of the pattern selection method for the front lock, different Technique numbers may be used for the same knit result simply by changing pusher arrangements and lock settings on either or even both beds.
This test was knit on 30 stitches and for 100 rows after changing the ground yarn, adjusting the tension, and programming Tech 180, but disregarding the pusher set up for the back bed, and setting the back lock to N 
The fabric is stable and reversible with interesting peek-through that reminded me of drop stitch lace.
Passap to Brother 6, exploring a possible tuck stitch design
This post has been prompted by a recent Ravelry query with respect to having had disappointing results when attempting to knit # 1301 from the Passap Pattern Book as a double-bed fantasy fair isle using a Brother model machine. 
Machine knitters using Japanese model machines are familiar with some tuck rules ie. white pixels/ unpunched squares that form tuck loops, should have a black pixel/ punched hole on each side of them and not occur vertically for more than 4 rows in order for stitches to knit off and form properly.
Tuck punchcards illustrated in Brother Volume #5 on pp 218 and 219 include a few exceptions to those rules such as #786 
Looking at the reference design in the Passap Pattern book, it is used as a background motif only, not as a tuck one, and rotated using console commands. 
When uncertain as to whether a design repeat is appropriate for a specific stitch type, begin with a limited-size swatch, a thin and familiar yarn, knit slowly, and listen to the sounds the machine produces, which can be early warnings of potential problems.
The Passap motif issues in terms of tuck knitting analyzed on the first look: there are pairs of blank cells side by side, repeating vertically, and combined throughout 
The first test is knit in acetate of unknown thickness, the guess is around 2/18. The 40-stitch swatch measures 6 inches in width, with transitions from and back to stocking stitch horizontal borders, and with the body knit on the single bed with the carriage cams set for tucking in both directions. 
The unaltered repeat may be used double bed, resulting in 8 inches in width, with lots of stretch, and the potential to increase the measurement even more with blocking.
A: transitioning from stocking stitch to every needle rib without added steps will form eyelets
the knit carriage is then set to tuck in both directions, and the ribber carriage is set to knit in both
B: a return to every needle rib before scrapping off 
The chart on the left illustrates possible cam variations for knit and ribber beds using tuck settings in Brother machines.
Color separation is required to knit the design using two colors.
In the Passap electronic models, a technique number is entered and the appropriate color separation is performed by the console.
Many results as in this case, rely on each color in each design row being knit twice.
In Brother knitting, other methods need to be used in order to obtain the necessary separation.
The fabric though technically knit as dbj, will begin with the first preselection row from right to left toward the color changer as opposed to from left to right when the built-in electronic KRC separation is used.
Punchcard users can produce the same fabrics if 24 stitch width constraints are met.
The png for the repeat on the right is shared below, and tested using the cam settings 4: 
The results using other cam settings can be mixed, and generally far more successful using designs with larger shapes forming design and ground.
Using tubular tuck, 2 
the knit results become muddied, as seen at the top of this test 
Some previous blog posts exploring motifs worked on the double bed using tuck cam settings on either or both beds:
More shapes on ribber fabrics with tuck patterning, fantasy fair isle
Lace transfers meet fisherman rib, 2 colors, brioche on Brother KM
Lace transfers meet fisherman rib in 2 colors, brioche on Brother KM 1
Geometric shapes on ribber fabrics with tuck stitches 3
Geometric shapes on ribber fabrics with tuck stitches 2; knitting with 4 carriages
Geometric shapes on ribber fabrics with tuck stitches 1
Ribber fabrics with main bed tuck patterning 1/ pick rib
Fisherman and English tuck stitch rib 1_ checks patterns_ Brother, Passap
A different way to bend rules is to use multiple heights of row repeats within a single design, such as in this densely 24X20 tuck stitch design 
Drawn-in-repeat to 120X120 pixels 
The design would need to be color reversed for use in electronic tuck knitting
Punchcard users must punch all the black cells 
Using thin yarn is best with lots of evenly distributed weight, watch for loops getting hung up on gate pegs 
Eliminating one row of blank squares where there are 5 in a row, reduces the repeat to 24X16 
The result produces a similar texture. In this test swatch the number of stitches used was planned to attain similar side edges, and end needle selection was canceled 
Cross brand pattern interpretations: Dubied to Brother
Reviewing Brother carriages: 
I am drawn to published pattern books for different brand machines at different periods of time and enjoy the puzzle of converting their designs to machines I have ready access to.
At this point in time most of my swatches are produced on a 930 using img2track to download files when needed while still making an attempt to share repeats usable on punchcard knitting machines when possible.
I have never been in the same space as a Dubied, but have been researching online trying to gather any information that might help me translate more of the patterns presented in the manual “for developing your hand and machine sampling”. These are my personal notes, not meant as accurate teaching tools, but shared to perhaps serve some use to others when decoding cross-brand pattern instructions.
Close to the completion of this post, I acquired the manual for the Dubied N4 model from a friend, with these images and some variations of the text. 
The associated tools from an online sale site: 
Manuals available online for free download
Another source of inspiration for a different machine, Italian text only available, with many similar stitch structures: 
The Coppo numbering for settings in a box format 
My initial attempts to develop an understanding of functions began with an illustration from the Dubied N4 parts manual 
Some related functions, the term cardigan is used to refer to what many of us know as tuck stitch. 
Visualizations of mirrored matching cam lever positions on opposite beds. 
These machines do not create patterns via punchcards, instead, cams inside the carriages are controlled by switches that alter stitch formations. They are classified by the inclusion of the following symbols
N: equipped with rib and tube cams
F: equipped with cardigan cams for the execution of all tuck stitch fabrics
H: fitted with high and low butt needles. The raising cams operate either all the needles or high butt needles only. All machines with these needles are equipped with cam-plates allowing all the knit-and-tuck or all-tuck combination fabrics to be formed
4: 4 yarn carriers, which can be placed on either side and allow the manufacture of different pieces at once.
Basic rib structures are modified further by positioning needles in specific needle arrangements.
Functions and settings are often represented in manuals and publications in varied ways. The N4 manual supplement shows an undercarriage numbering system that uses a different sequence than my illustrations. The particular model introduced the addition of auto cams, allowing for alternate function patterning on needles in different positions. 
I find it easier to think of settings on each bed separately, especially in cases where bed instructions also need to be reversed.
This is my initial effort at illustrating comparisons between the Dubied and Brother settings for knitting specific swatches.
Any fabrics acting on stitches occurring on selective tuck or slip stitches on one or both beds would need to be programmed in Brother machines for patterning on the top bed. On the ribber, the use of lili buttons will automate card 1 needle selection in the pattern on an even number of needles, but in many instances, in executing the Dubied patterns, hand selection in specific needle arrangements may be required as often as every row. 
Information from N4 pub after I had created the above, with additions and some paraphrasing: the numbering system for “keys and levers” 
Key positions:
1. closed if turned toward the inside of the carriage, no rows will be knitted ie slip stitch in both directions for a free pass, no knitting, with no yarn using Brother
2. opened if turned toward the outside/ away from the carriage, rows will knit
3. central position for floating threads on the low-heel needles, knit/slip, programming for needle selection in upper work, Brother D, and lower, Brother B, or limited Brother ribber selections using lili buttons
Stitch size dials:
Numbering from 1-20, two on the front carriage, two on the rear carriage, three lengths can be set using the stitch size dial, indicated by three colors red, black, and green 
(Cardigan) Levers: each lever can be positioned separately: pointing toward the outside of the carriages/ back: the space between them 
neutral/middle: if activated will hold the thread on all needles (tuck loops across all needles in work)
pointing toward the inside of the carriage/ forward: if activated will hold the thread (form tuck loops) on the low heel (non-selected needles in Brother)
Sliding unladen (no yarn) carriage/ free pass: made with keys 1, 2, 3, 4 closed/ Brother carriages set to slip in the direction of knitting
Plain knit or any rib setting: Keys 1, 2, 3, and 4 open the carriages work on selected needles, levers facing outward/ Brother with both beds set for plain knitting
Combining knit carriage needle selection with racking 2017 and
A racking tale: Passap/Brother 3 in 2019 used this repeat as the springboard for textures that did not match the original in stitch and row counts or racking sequences. The racking handle position is referred to as up or down, similar to the Passap system. 
The ribber is used as the front bed.
I initially interpreted a round as a single row of knitting and held onto that for a while, and my arrangement for needles in and out of work on either bed was reduced.
Sometimes there are good reasons why our swatches do not match the inspiration one, a bit like changing ingredients in a recipe and wondering why the result is different.
The first test: in practice, I was simply unable to get the ribber to rack by 4 positions after only 3 knit rows, the problem was solved by a change in the needle arrangement and racking by only 3 positions in either direction. Another option would have been to add more all-knit rows between racking sequences as seen in the subsequent Coppo machine pattern adaptation, creating deeper folds.
The tension was adjusted to the tightest possible and remained fixed with no variations on either bed.
The gauge is likely looser than that in the Dubied manual, forming larger stitches and resulting in a softer shape definition.
Brother tension adjustments can only be made on one dial on either carriage, while the Dubied offers multiple settings on both beds.
To knit manually changing ribber settings, cast on with racking position on 7.
After casting on and transferring stitches up to the top bed the needles are arranged as follows, blank cells represent needles placed out of work back to A position: 
1. Knit 3 rows on both beds
2. Set the ribber to slip in both directions, knit 3 rows on top bed only, and rack to position 10
3. Set the ribber to knit, knit 3 rows on both beds
4. Set the ribber to slip in both directions, knit 3 rows on top bed only, and rack back to position 7.
Repeat the 4 steps, ending with 3 knit rows before binding off.
Elongated stitches happen on the bed with needles out of work, in this case, the ribber, and the texture will appear on the knit side.
The needed racking positions become easy to identify as the knitting begins to grow. If one wishes to track hand techniques along with their respective row numbers and racking positions a spreadsheet can quickly be created including specifics ie in this case row counts, ribber settings changes, and racking positions: 
Automating the selection, and swapping beds make the process easier to track: begin on racking position 7, inverting the needle arrangement in order to keep the same racking sequence. Cancel end needle selection whenever any needles are out of work on the main bed and the knit carriage is set to slip in both directions. It is not always necessary, but a good habit to develop. 
The width of the main bed is programmed using a repeat that has 3 rows of punched holes/black pixels, followed by 3 unpunched rows/white pixels repeated X2, for a total of 12 rows. 
Emptied needles on the knit bed are pushed back out of work to the A position. All ribber needles are in the work position.
Needle preselection in Brother on the knit bed will not interfere with racking since ribber needles are continuously in the B position.
Cancel end needle selection, KCII, as in any fabric with slip stitch selection on the top bed combined with needles out of work.
After the repeat is programmed and the first preselection row has been made, racking will happen every 6 rows, first to position 10, and then back to 7.
Starting side does not matter unless color changes are intended on every even number of rows.
Elongated stitches happen on the bed with needles out of work, the texture will appear on the reverse side, where all needles are in work (NOOW). The blue is knit with NOOW and with setting changes on the ribber every 3 rows, while the yellow swatch is knit with the main bed programmed with NOOW and a 12-row repeat using the slip stitch setting in both directions. 
When a round is interpreted as 2 rows of knitting, the carriages leave and return to the same side, color changes can be considered. The out-of-work/in-work needle arrangements now match the published counts, along with the repeat for knitting with the top bed set to slip and knit rather than the ribber. The method is the same as previously described.
Racking is now planned by four positions, and occurs every 12 rows once the needles are all preselected on the top bed, starting at racking position 6, to 10, and back to 6, 
producing a swatch matching the original. 
What about adding color changes? An easy place to change color is when the needle selection changes from slip to knit, with each color knitting for 6 rows, remembering to also rack after every 12 rows.
The brown yarn was hard to see clearly on the needle bed. When off the machine there were interesting unplanned areas of dropped stitch lace where dropped stitches on the top bed had been missed.
Tabling the idea of adding other colors to this particular pattern, at least for now, but never say never in knitting (and baking). 
And then there is this related pattern in the manual that involves racking by 4 positions and deliberately dropping stitches 
With some experience needle setups can be varied to suit, while achieving the same results as published illustrations.
I prefer to start with racking to left, as a result, the shapes in my swatches are mirrored horizontally when compared to those in the manual’s photo.
There are ways to make casting-on quick for testing small swatches when permanent edging starts do not matter.
One method to do so was described in the post: Ribber cast on comb/ open stitch single bed cast-on and was used here.
Ribber cast on combs traditionally came in different colors. I happened to try to use one of my grey ones presumably a Studio 4.5 mm one and found the spaces between its teeth not matching that between my Brother machine needles evenly. There were no issues when using the “silver” Brother comb. Here it is shown in position, with stitches cast only on the top bed, 
and picking up loops for stitches on the ribber as the carriages travel to the opposite side. 
The plan is to move ribber stitches to the left by two positions three times before returning them to their original position.
The ribber carriage is set manually to knit on dark yarn rows and to slip on light yarn rows.
The ribber setting “song”: light/ slip levers up, dark / slip levers down.
The dark forms the dropped stitch lace pattern, it is thinner than the light yarn and the knit steams fairly flat.
Stitches are dropped by disconnecting the ribber carriage and making passes with no yarn, first to drop the stitches, and then to couple it once more with the knit carriage to continue knitting. 
Automating the pattern, switching beds: program a 12-row repeat for 2 rows slipped, 2 knitted across all needles in work.
Note to self, when you swap beds and the ribber is forming all the knit stitches, do not use the ribber carriage to drop all the stitches on it!
Both yarns here are thin, and steam/press fairly flat.
If a ribber cast on for every other needle is used, remember to change the pitch from P to H after the transfers between the beds have taken place. A check to confirm that indeed needles will not smash into each other is quick to perform and well worth doing before continuing.
My needle arrangement: 
It is interesting that the swatch photographs accompanying directions in the Coppo manual are not “perfect”, some showing pattern adjustments or even sporting holes not part of the design. This texture is very similar to the above
I initially interpreted 4 rounds as meaning 4 rows of knitting.
The resulting adaptation: cast on with the racking indicator on 6. The red numbers illustrate the guide provided in the publication and the bold black count adjustments in the actual knitting of the pattern. if attempting to match the original the 6 rows knit on the top bed should actually be 8 prior to racking.
The racking handle is set to 6
1. Knit 4 rows on both beds
2. Knit 4 6 rows on the top bed only
Rack by 4 positions, no direction given, I chose left to 10
3. Knit 4 rows on both beds
4. Knit 4 6 rows on the top bed only
Rack by 4 positions, I chose right to 6
Repeat steps 1-4
The elongated, slipped stitches are formed on the ribber, the bed with needles out of work, and the texture will appear on the knit side.
In any racking, the ribber bed may move beyond the stitches on the knit bed as the carriages move past the needles originally cast on and past the end stitch on one side or the other. This can help create some interesting side edgings.
That said, the first test swatch is knit changing ribber settings from knit to slip. If all needles are in work and the slip stitch setting is used, a float will be formed on the ribber if it has moved beyond the last needles in work on the opposite bed until the yarn reaches the stitches on the main bed as well.
It will not be an issue if stitches on that side are transferred up to the main bed. 
Automating the process, the beds are reversed, the repeat is now 20 rows high, and the knit carriage will be set to slip in both directions. 
The needle setup matches that given by the manufacturer. 
Empty needles are pushed back to the A position after transfers.
Racking happens every 10 rows, just after every needle in work preselection on the main bed. 
This pattern utilizes the cardigan/tuck function and requires thicker yarn. The wool used here is a 2/8 weight, knit at as tight tension on the ribber as possible, in this case, 6. Here the instructions for knitting include references to specific numbers of rows rather than rounds. 
I was unable to reproduce anything like this sample in the manual with the illustrated needle arrangement, revised it.
The revised needle arrangement allowed for forming a vertical single-stitch column as in the swatch, and the racked patterns occurred at the center of a purl ground.
The swatches are knit in different wool weights. Racking happened by 2 positions after each round/ pair of knit rows, starting side did not matter. 
The above were knit using the slip stitch setting.
Reviewing the manual once more, it was noted that the sample was in the center of a page with the heading: racked fabrics in the cardigan/ tuck stitch. The stitch formations using tuck stitch on alternating Brother and Passap beds are reviewed in the post on Fisherman and English rib.
No specific lever or key instructions were provided. The general advice given to knit the cardigan aka fisherman’s rib is to start with the Dubied carriage on the right, all keys open, and push lever 8 (front left) and lever 6 (rear right) to a neutral position (9). In the outward direction, the carriage knits along the rear needle bed and holds the thread on all the needles of the front needle bed; on the return, it alternates the processes, a tubular tuck.
On Brother, it would be done by selecting opposite tuck buttons, making either the selections on the left or on the right 
That is simply not happening with the pattern needle arrangement on a Brother machine, there are not enough stitches on opposing beds to anchor down tuck loops.
Half fisherman, aka English rib, tucks on every needle in work on one pass and knits every needle on the same bed on the return pass.
The new swatch is knitted using the same modified needle arrangement as added to the photo from the manual, starting from the right, with the ribber carriage set to tuck to left, knit to right, and the main bed set to knit every needle. 
The swatch is shown in progress on the machine with needle placement as it would appear in the starting setup prior to knitting 2 rows.
The first row tucks on ribber needles when traveling to the left, the second knits on them when returning to the right, followed by racking 2 positions to the left.
Two more tuck/knit rows are followed by racking by two positions back to the right, in the starting needle arrangement.
The manual image is shown on the left, and the Brother swatch, mirrored horizontally, is shown on the right. 
The following Dubied knit was particularly interesting to me and reminded me of this sample knit single bed in a previous post. 
Autocams are drum pattern devices that attach in pairs to the Dubied carriage that modify the stitches much like a punchcard would. It is a drum with pegs of different sizes and positions which rotates with a pass to the opposite side. The cams are selected by fingers. The description is evocative of the Passap needle pattern selection in response to its pusher placements.
To execute this swatch, the top bed was programmed with a repeat suitable for punch card machines.
Guilloche fabrics are made with rows of stitches where tuck and knit stitches are combined and alternated for multiple fixed needle selection rows.
The working theory on converting the published instructions: 
While the program eliminates having to change cam buttons manually on the top bed, the ribber settings need to be changed with each color change.
The tucks happen on both beds for 6 rows, so it is a necessity that any Brother sampling is knit using thin yarns. Here the dark is a 2/20 wool, and the light is a 2/28 unknown fiber, possibly acrylic, knit at tension 4 on both beds.
End needle selection is on, KCI.
The repeat is 12 rows in height.
Color changes and carriage settings happen every 6 rows.
The first preselection row is toward the color changer, the design will begin with a tuck pattern on the top bed and the ribber set to knit. 
On completion of the first 6 rows, COL, every needle on the top bed will have been preselected to the D position, the warning that a color carriage setting changes are due before continuing to knit. The top bed remains set to tuck but will subsequently knit every needle. The ribber needs to be manually set to tuck in both directions. 
Upon completion of the 12-row repeat, with COL once more, the top bed will have been preselected in the tuck pattern, the warning that color and carriage setting changes are due before continuing to knit.
The ribber is set to knit once more, and the process is repeated.
Two views of the needle setup: 
A small proof of concept 
One from the Italian language supplement: 
For this fabric, the ribber needles need to be manually selected for every other pair of rows. Needle selections on the top bed provide clues as to what the settings should be on the ribber as in the previous swatch.
The top bed is programmed with a repeat suitable for punchcard machines 
The needle arrangement was set up as given. The end needle selection is on, set to KCI.
The main bed remains set to tuck in both directions.
The colors and settings on the ribber are both changed after each 2-row sequence.
The ribber needles need to be manually selected with 1 needle up to the E position for knit stitches followed by 2 needles in the B position for tuck stitches repeating across the knitting width.
The ribber settings also need to be changed and set to tuck in both directions so that the needle selection will knit on the “high”, and tuck on the “low” needles as in the Dubied.
When the two ribber tuck rows have been completed, with the next color change, COL, the ribber carriage is set to knit in both directions once more and patterning reverses beds. 
A simple plaid idea using the slip setting: the 32-row repeat shown on the far right was programmed, and color changes happen after altered preselection on the top bed.
The dominant color (white cells) knits on all needles, while the contrast (dark cells) knits on the ribber only while stitches skipped on the top bed become elongated as they are skipped. 
Things to consider:
A. when first changing colors, the yarn may drop the first few stitches or for other reasons even drop a whole row. If the knitting is started on waste yarn prior to any permanent cast-on for the piece, one can insure that color changes happen properly and asses the proper tensions for the yarn used on the specific needle arrangements.
B. the ground color in this instance is changed after 16 rows, the contrast at far shorter intervals. Lengths will form on the color changer side of each contrasting color. They can be intentionally lengthened further so that at the completion of the piece they may in turn be cut, resulting in yarn ends long enough to be woven into the rib. If doing so, make certain those first few stitches after the color change form properly. There are other ways to handle yarn loops and ends like these, test any favorite on long enough swatches first.
C: all rib areas will be slightly wider than those where only a single bed knits
D: in the areas where only a single bed knits there will be some narrowing. 
Revisiting Large eyelet lace, hand transferred (or not) 2013
It would appear the original cast-on for this is performed on the double bed with transfer to the front of all rear stitches.
To duplicate in Brother, cast on every other needle, and transfer all stitches to the knit, top bed, or cast on the top bed. The fabric benefits from the use of even weight.
This sample uses 2/8 wool, tension 8. The setup was changed slightly, resulting in empty needles at alternating side edges.
Planning out the repeats on a multiple of 4+2
The edge stitch is moved as well. As recommended in the instructions, all empty needles are left in work position B or pushed to E prior to knitting the next row. Knit one round translates to knit 2 rows, which happens after each row of transfers, the carriage will move from and return to the same side.
The swatch in progress, watch for any loop formation on either side: 
As with any time in knitting when there are 2 side-by-side empty needles, the loops on those needles will not form stitches, but rather, ladders with each carriage pass. 
The transferred stitches have been knit for 2 rows, so the transfers are made again of single stitches onto the loops on either side of them, securing the loops before knitting continues. Here there is an empty needle on the far left, 
and here on the far right 
The resulting swatch, with a dropped stitch I missed on a row shortly after casting on 
Before binding off, after a single row is knit, drop one of the double loops, insert a single eye tool back to front, turn it clockwise, and lift the result onto the now empty needle, essentially creating an e-wrap. Work across the row, knit at least 2 rows, and bind off loosely.
Another racking tale: Passap/Brother 5
I taught in a design school in a lab with Brother Punchcard models, four 910s, and 2 bulky machines. My previous experience had been using Passap and Studio electronics, and a crash course in Brother models followed my being hired.
My E 6000 was purchased from a sewing machine center at a time when the owner decided knitting was not for her.
The 560 Studio model was later upgraded with a change in their box in exchange for my publishing some patterns for the Studio Design Magazine but was sold years ago.
There were years the Passap was my production machine for garments and accessories knit double-bed. Single-bed knits for the same end use were easier to knit on Brother, with a clear view of stitch formations vs the issues with seeing the fabric or correcting errors when working with the ribber in place.
The immediacy of easy testing with img2track on the 930 results in nearly all of my recent blog swatches.
There are still days I admit I do love the E6. The console commands along with the lock setting and pusher options on the back bed make a range of fabrics possible that are far harder to achieve in Japanese model KMs.
Looking back, these are some of my previous shares including Passap mentions
Machine cross reference chart 3/18
Brother/Passap: traveling between brands 11/18
Pile knitting on Passap/ Brother KMs 4 1/20
A racking tale: Passap/Brother 3 9/19
Translating Passap model book pattern/use on Brother 1 8/19
Fisherman_ English tuck stitch rib 1_ checks patterns_ Brother, Passap 10/18
Tubular machine knit fabrics: fair isle, Brother/Passap 11/17
Pile knitting on Passap and Brother KMs 2 7/15
Pile knitting on Passap, Brother, and Studio KMs 1 7/15
Drop stitch lace, 2 colors per row, Passap KM 10/13
Back to leaf lace, add rib, and take it to the Passap 3/12
Japanese punchcard motifs used in Passap E 6000 machines 4/11
FB shares have led me down rabbit holes I may not otherwise have entered.
In the machine knitting group, someone recently shared a series of scarves knit using the E6, providing the Duo80 diagram and the E6 technique number. The setup is for a 2/2 rib, reverses the pusher positions, but produces the same knit
Duo 80 symbols 
AX = Tuck, setting is the same in both the Duo and the Passap back locks
AX serves the same function in the Duo, and is replaced by KX on the E6 front lock
The arrow keys on the back lock work the same on both machines.
Passap preselects and works on pushers initially placed in work or rest on both beds, whether manually or by console selections in the E6.
Brother preselects needles in the planned pattern on the knit bed subject to punched holes or programmed pixels, but not on the ribber, other when using lili buttons, and that comes with rules and the sole automatic repeat ie the that the number of needles in use on the ribber must be even. 
On the Passaps there are no such rules on the back bed.
With no arrow keys selected the same action is repeated until the lock setting is changed, so in the above, the change is made by manually setting the back lock to N for 2 rows, then back to AX for tuck on both Passap models.
The front bed in the Duo also has a fixed pattern selection, requiring the lock change to N there as well. The E6 built-in pattern selects the all-knit rows, so its lock remains in the KX setting.
The initial pusher setup is manual on both models but not location-dependent in this particular design.
The E 6 console will select the proper pattern based on the pushers in the work position. A look at pusher positions from the E6 manual. Each machine brand has its own specific vocabulary for parts and techniques. 
Things get a little more complicated on Brother, it is helpful to have an understanding of stitch formation on both beds before tackling more complex knits.
In Brother the needle placement on the main bed matters as it does in tuck lace, so it needs to be verified before any knitting. “Air knitting” is one easy way to do that. Rows 5 or 6 would provide the necessary preselection.
In any punchcard model or Japanese electronic machine, the knitter is usually in charge of keeping track of racking. The E6 provides console prompts for racking positions in this design, facilitating the process.
An attempt to visualize what actions need to happen on the Brother models: the needle setup will match the Duo or the rotated E6 version 
Considering the required patterning for each bed, empty columns in my charts represent needles that need to be pushed back to A and left out of work on both beds. Textured ladder spaces will not be formed on either bed as is seen when using similar repeats on the single bed. 
Adding the ribber position and configuration 
The top bed can be programmed, this 24-stitch version is suitable for use in punchcard machines. 
The main bed will knit all needles programmed with punched holes or black pixels and will tuck unpunched squares or white pixels.
The ribber requires setting changes after the initial four and after the last 2 rows of each 6-row repeat.
In addition, there are racking changes after each repeating segment.
In this setup, there will be a knit stitch beside each tuck one up to the all knit rows, helping to anchor the tuck loops. Ribber carriage settings are noted. 
Anytime there are needles out of work, cancel the end needle selection. Depending on the machine model being used the repeat may need to be mirrored horizontally to match my in-process photos, true in my 930.
Using design row 5 or 6, air knit a row to find needles that need to be in work on the knit bed. Push non-selected needles out of work, and back to the A position. After doing so, reset the pattern to design row one.
The setting for the racking indicator does not specifically matter. It is often best to consider this before casting on. Here racking is only by one position, avoid 1 or 10. Starting at 5 centers stitches in relationship to each other stitches. As knitting progresses, where the ribber needle positions become obvious and less reliant on checking numbers. 
Cast on bringing appropriate needles into work on the ribber.
The original needle setup. 
Use any favorite cast-on method.
Starting side does not matter unless one is planning on using a color changer, in which case the first preselection row needs to happen from right to left.
Since needles will be manually pushed up to the hold position, make certain that the ribber carriage is not set to hold. 
In a test swatch, knit several all-knit rows before beginning the pattern. If planning a piece, start with waste yarn and ravel cord prior to casting on with “garment” yarn.
A tool that aids in selecting every third needle is extremely helpful 
The initial carriage setups used for rows 1-4 
The placement of the first needle on the ribber with respect to that of the first on the main bed 
The first needle in each pair of rows on the ribber needs to be brought up to the E position in every row for the first 4 rows of the 6-row repeat, I began with the first ribber needle on the left. 
The needles brought up to E will knit, and help anchor down the knit bed tuck stitch on their left, and the needles on their right will tuck. In turn, the main bed selected needles will anchor loops formed on the ribber, the nonselected will tuck.
The appearance after the tuck loops have all been formed and the needles holding them up to that point are preselected forward just prior to the 2 all knit rows. 
The knit carriage is left on tuck in both directions, while the ribber is set to knit for 2 rows. It is not necessary to change the P lever to R, with the other buttons set to N, knit is king. 
Time to rack so that the first needle on the ribber will now be to the left of the first on the main bed. Push down lightly on the first 2 ribber needles on the left before racking in case those first stitches are a bit snug, to avoid starting needles crashing into each other as you move needle positions. 
Knit 2 rows.
Rack again to the initial position, change ribber settings again, and repeat the process as described. The proof of concept: the error shows what happens when one misses changing the ribber settings back to tuck. 
If that is not challenging enough, add a color change, knitting the first 4 rows using color one, and the 2 all-knit rows with color 2. 
I used to tell my students to develop a sort of tune that could be sung (mentally) as a reminder of the steps in complex fabrics ie bring up 1, 2, 3, 4, rack, change color, change settings, knit 2, rack, change color, change settings, bring up, etc. but my advice if you really want to knit this fabric in a full piece is to borrow and E6 or pay someone else to knit it for you 😉
Cables and software for electronic download to knitting machines
A Ravelry post discussing cable connections to knitting machines for downloading patterns and associated software has led to my accumulating the information below. I am primarily a Brother and a sometimes Passap knitter and can speak to only part of the content below from direct experience.
The information on electronic downloads cannot be separated from a history of hacking, which began with Brother machines when mylar sheets became less available and folks began to have an interest in bypassing them. A review of such efforts was also shared in a previous post:
a hacking history https://www.beautifulseams.com/2014/10/29/tricodeur-writeup/
only the intro is in German: a nearly hour-long presentation by Fabienne<https://www.youtube.com/watch?v=n1CRNjzOuto>
Brother 930: http://learn.adafruit.com/electroknit
Brother 970: http://glitchknit.tumblr.com
930 knitting: http://andrewsalomone.com
910: Claire Williams Wordpress site is no longer available
Fabienne http://fabienne.us/tag/knittingmachine/
keypad: http://travisgoodspeed.blogspot.com/2010/12/hacking-knitt…
FB100 Emulator software, disc utility program, cable
another approach for Brother models KH”‘930, 940, 950i, and 970: http://daviworks.com/knitting/ and the associated group on Ravelry
970 how to hack instructable
for additional cumulative information, software compatibility, and hardware specs see Claire Williams’ website
Superba hacking and open source software https://www.hackerspace-bamberg.de/Singer_Superba
E6000 https://www.hackerspace-bamberg.de/Passap_pfaff_e6000
hack and 3D printed accessories, Passap: Knitterstream
Present interfaces available for downloading patterns to Brother knitting machines: so far, both programs do not appear to run natively in the new iMac with M1 chip and Monterey OS.
That said, https://ayab-knitting.com , supported devices: https://ayab-knitting.com/supported-devices/. My experience using it has been with the 910. Pre-assembled kits used to be sold, over time they were offered by 2 different providers and were taken off the market by each of them. In many cases, there appear to be some issues with the program in DIY units as well resulting in mispatterning especially in long pieces of knitting.
Ayab operates as a true knit-from-screen, so the computer needs to be awake through the whole knitting process. In the case of the 910, the hack replaces the reader completely, the left side of the machine is left exposed, and the interface replaces the traditional patterning and power source, with its own cord connecting it to the power supply.
The last update to the program was in 2019. It performs color separations for dbj in multiple colors per row, including the only one of its kind, the Heart of Pluto one that eliminates jacquard color separation patterning errors and knits single passes for each color in each design row on the main bed.
Since the built-in patterning control buttons are rendered inoperable, Actions such as color invert, setting the number of repeats, vertical flip, mirror, rotate left, and rotate right are available within the program. Patterns may load both in color and shades of gray, palette color choices make a difference in achieving successful color separations.
Ribber settings include classic, middle color twice, HOP, and circular for tubular fair isle or other fabrics.
https://xxxclairewilliamsxxx.wordpress.com/hack-ta-machin… is an early post on the hack, showing steps involved. Kits with parts for DIY may be found online including at https://ko-fi.com/redpinkgreen/shop.
The program is free, any incurred expenses depend on how and from where the interface components are purchased.
The related Ravelry group has been quiet for a very long time, for more information on what is being developed and what users are knitting, the FB group has frequent shares. I would urge anyone interested in the program to join the group before making final decisions, to observe issues reported, and the finished projects if any using it https://www.facebook.com/groups/1384431355220966.
A recently added video KH 900+ KH 965 Brother knitting machine – How to install the AYAB Shield/alternative pattern control|
On my blog when I actively used the program, I shared my experiences using it and explored a variety of fabrics using its settings.
img2 track: works with Brother models KH 930, 940, 950i, 965i, and 970. https://daviworks.com/knitting/index.html. The program is also free to use on swatches limited to 60 stitches in width, to use the full width of the needle bed a the purchase of a registration key is required, the cost is around $100. The download cable can be ordered directly from Davi and directions are available for those with the ability to build their own. The program downloads the pattern into machine memory, so the computer does not need to be awake other than during download. The size of the download is limited by the machine model brain, with the 930 being the smallest.
When large files are planned, the program will reduce the pattern into tracks, and each has to be entered as a new program after the previous track is completed. The KH-930 takes just a few seconds to load the track because the memory holds only 2 KB of data (about 13000 stitches). Later models have a much larger memory (32 KB). The KH-940 and KH-950i require 42 seconds to load a track. The KH-965i and KH-970 load only the requested pattern, so the loading time depends on the size of the pattern. With Brother models KH-965i and 970, you can load a pattern from img2track without erasing the previous ones in the KM, as long as they fit in the memory. So you can have 901, 902, etc. loaded and choose between them.
Color separations are available for multiple color dbj, but not as a single pass for each color in each row as in Ayab Heart of Pluto. Images open in shades of grey. Each color in each design row is knit twice. It is possible to knit each design row color only once by adding a hand technique.
Adjustments may be made for vertical stretch, maximum width, and the number of colors used. Any remaining changes can be made by using knitting machine button selections.
Out of habit, I have used both programs to open bmps and pngs saved in indexed mode though both are said to open common file formats ie. jpg, gif, png, bmp, tiff, …Neither program exports files in other formats or allows for editing specific pixels in the designs in any way after they have been opened.
I have found img2track to be completely reliable, errors encountered during knitting or programming have usually been operator ones. I develop my patterns outside either program in paint programs, I prefer to use Gimp or ArahPaint6.
The AYAB GitHub offers a huge library of ready for download images from various sources, most in png format.
I do not have any direct experience with Studio Electronic machines post-EC1 Studio’s approach to machine brains was to develop an exterior box that could be purchased separately from the knitting beds, EC1 on the left, their PC1 on the right 
From the manual on its use 
The following information is gleaned from online searches: Studio or Silver Reed’s efforts to move away from mylar sheets as seen in the EC1, headed in a different direction than seen in Brother knitting. There are two options still available are the SilverKnit and SilverLink systems:
SilverKnit, with more info at https://silverknit.nl/dk/silverknit-en.htm “provides the knitting functionality of the EC1/PE1 for electronic Silver Reed machines. The site lists all pertinent information on system requirements and compatible models. One can knit patterns without the need for additional software, which may be created with a graphics package of your choice.” The pieces involved include a controller unit, a coil cable connector curly cord, and the box, which may be secured on its side to the knitting machine case using velcro strips, usually true for other switch boxes and control units as well. There is a SilverKnit software user interface. 
For Superba machines, there are the Superbaknit packages available: type A for pressure pad, 624, 9000 models, and type B for light scanner/pegboard models. They allow patterning across the entire bed, accept multiple file formats, and seem to use the same platform as the Silverlink program. 
The Silverlink, now in Series 5 is for use with DAK. Manuals for softbyte cables include information on series 3, 4, and 5. 
There are distributors in each country listed on the Softbyte site. There are also individual dealers selling related DAK products in other states and locations. Prices are not necessarily fixed, and relationships with local dealers may foster easier-to-reach individual support.
A 2020 review of the Five Pattern Control Methods for a Silver Reed Knitting Machine.
Passap knitters were first introduced to Creation 6 as the proprietary Madag E6000 software, usable with a short dongle on computers available at the time, making it necessary to remove the card reader from the machine in order to get it close enough to the computer for download. The dongle was plugged into where the curly cord connects on top of the console. Cochenille developed a download, knit from screen cable, and my early Passap pieces were made using Suzan Lazear’s BitKnitter on a reader with 8K memory. With true knit-from-screen, console memory is bypassed. The system was also available for Studio machines, both became abandoned.
As is true for the present DAK system, there was also a proprietary Passap file format used, CUT, aka Dr. Halo. Eventually, I purchased a switch box and download cable from Richard Croucher in England, and up to the present-day that has been my go-to for downloading patterns using and an ancient laptop. Personally, where I go now that I have a new PC available, is TBD. I failed to get the system to work using VMware on my old iMac.
One of the caveats with downloading to the Passap is that the cable connection for both the curly cord and the download cable share a single entry point to the console. This connector was temporarily available and spared some of the wear and tear on the console 
The addition of a switch box, secured with velcro on the console, allows for the possibility of downloading and knitting patterns without having to make any multiple other connections. 
Aside from connections to the machine, there was the issue of available software for drawing repeats and downloading in the proper format.
In the heyday of machine knitting aside from textbooks and articles beginning to appear from authors such as Lewis in the US, Kinder in the UK, and Carmen Router in Australia, lots of practical accessories and other info grew out of a very active knitting community in Australia as well. Accessories included a plaiting feeder and a stitch ditcher, and homegrown freeware was shared for printing reader cards. To this day Wincrea is still available for downloading to the E6000 machines. Others have followed ie Journal 6, which is now available as freeware, the repository may be found here. Wincrea remains the easiest to use. Supported formats are CUT/ Dr. Halo, BMP, and WMF (Windows metafile). At the present time, downloads of patterns are only possible in machines that allow PC downloads with later manufacturer chips and larger, 32K memory.
CUT files have a separate palette, the program reads the palette if it is found in the same folder as the CUT file. If the program palette is not the same as when the pattern was saved previously, the colors may not be as expected.
Some scaling may be done within the program. Files may be saved in both CUT and BMP formats.
If one chooses to, saving palettes is done by using specified names in the 256 color PAL (Dr. Halo) format.
When a design is uploaded to Wincrea step one is to have it read the correct number of needles and the number of colors used. If it does not recognize a com port, it will give an error message, and com-ports can be reassigned using the E6000 settings option menu. Once it recognizes the port, then it will come up with the download to E6000 option, and will also give an estimated time for the download to take place. It walks the user through how to prepare the machine for download. Two things are required: the console’s correct buttons need to be pushed to get to a “PC start” programming position, which verifies the machine itself is capable of accepting the download, and the switch must be in the download position. If things work, a beep follows once the download option is selected and the LED screen on the passap actually shows a progress bar for downloads that take longer than a few seconds. If the pattern has indeed downloaded successfully, the console beeps again and then follows up with questions on whether you want to alter the design in any way from its built-in additional options, what knitting “technique” you want to use, how many needles you want in work on either side of 0, and if you want to place the design in any particular place on the bed. It is possible to continue programming, either segments or different patterns altogether. At that point, cables are swapped out or if using a switch box, providing the operator remember to flip the switch to the knitting position, things should go smoothly. If one has forgotten to change to the knit position, the machine will beep and give you a totally different error message and beep. The Passap console has a whole series of lovely beeps, for all sorts of prompts and reasons that may be at times downright infuriating to people using the machine.
Passap color changers were available as add ons for automatic sequential color changing for up to 4 colors, are placed on the right rather than on the left as in Japanese machines, so programming downloads and first preselection rows must take that into consideration.
As CUT files proliferated, shared by Madag and individual designers, or as knitters wished to create their own, interest grew in creating, reading, and converting formats. Programs like Dr. Cutter for doing have long since become unavailable. Stitchpainter’s early versions were able to save CUT files, I have not been able to verify online whether the present version still does.
Present-day options for opening and converting CUT files include for purchase Graphic converter. On my new M1 iMac, I had issues with CUT files not opening. The software developer was responsive to questions and troubleshooting, a nod of thanks to Thorsten Lemke. The advice: please download the latest version http://www.lemkesoft.org/beta.html, and make certain that in preferences, the box aside Detect Only clear formats is unchecked. 
and for solving the same issue in XnviewMP, a nod of thanks to Pierre-e Goulet for the solution: in Settings, General, make certain that Show all graphic formats is checked. 
Xn Convert allows for easy batch conversions. I did not encounter any issues on Mac.
As these programs have grown in complexity, some of the CUT files open in strange colorways, need adjustments and editing, possible within the above programs, for increased or any visibility while some are viewed clearly. Batch conversions to other formats are possible, performed easily and quickly. A Windows-only image conversion program for exploration: Konvertor
DAK proprietary formats ie STP and PAT to my knowledge are not readable by any program outside the DAK universe.
Softbyte now offers a similar setup with a switch box allowing for download to a console capable of accepting PC downloads, the E6000 Link 2. “This link has a switch that enables the selection of either downloading or Interactive Knitting. It means that the cable can be kept permanently attached to both the E6000 console and bed. This avoids the need for repeated connection and disconnection of the link, and therefore also avoids wear and tear on the E6000’s sockets. The other links do not have the switch and need to be disconnected after downloading, so even if Interactive Knitting is not required, we recommend using the Serial E6000Link 2.”
The Softbyte links for Brother machines include versions for downloading and uploading with a Brother PPD or to machines that take a pattern cartridge. The magnet arm for interactive knitting is not included with all, may be purchased separately. “The USB Brother Link 5 enables patterns to be downloaded from DesignaKnit, and any 900 series patterns to be uploaded to DesignaKnit. The 900 series pattern numbers are those loaded from another source into your knitting machine or PPD (e.g. from the PPD, Brother FB100 Disk Drive, or DesignaKnit). This link supports downloading and uploading with the KH930, KH940, KH950i, KH965i, KH970, and with the PPD using Cartridge III in KH900 mode, or with the PPD using the CK35 cartridge. This link is identical to the USB BrotherLink 1 except that it includes a magnet arm that attaches to the carriage and thereby enables Interactive Knitting with any knitting machine, including non-electronic ones.”
The ScreenLinks provide row by row instructions and audible memo alerts for non-electronic machines or anyone using mylars, built-in patterns, or other software for the pattern downloads. They are not able to download patterns. The Universal Link for DesignaKnit allows one to connect any knitting machine, including plastic beds, to the DesignaKnit interactive knitting as opposed to knit from screen function. The USB cable is attached to your personal computer. The other end of the cable is attached to the mainframe of your knitting machine, the magnet to the carriage or lock of your knitting machine. The cable senses the magnet as it moves past it, and as it does DesignaKnit will advance the pattern one row. From the manual: 
And shown applied to a plastic bed machine @ https://www.allbrands.com/
Garment shapes filled with patterns may be developed in DAK, the cable allows one to use DesignaKnit as a knitleader or knit radar device increasing the capabilities of the knitting machine when shapes are created illustrating pixel-based increases and decreases, akin to what could be drawn on graph paper with each cell representing both a single row and a single stitch, and connecting dots placed on the basis of gauge calculations.
Having a small supply of self-stick velcro tape to put on each of your machines, allows for the cable and magnet to be moved as required.
A second knitlink arm appears to be required for the use of the lace carriage. I would guess it might be attached to a second knit carriage as well if one is choosing to knit with 2 knit carriages selecting needles.
DAK cable manuals published by Softbyte. Full Dak software manuals are not available until the program is purchased. There are 5 program modules. Some of the user experiences, answers to questions, and related knits may be found in the FB associated group.
“Crochet” meets machine knitting techniques: working with short rows 2
Some previous posts exploring hand techniques that might be considered to fall in this family of stitches:
“Crochet” meets machine knitting techniques: tuck lace trims and fabrics 1
“Crochet” meets machine knitting techniques: tuck lace trims or fabrics 2
“Crochet” meets machine knitting techniques: working with “chains”
Search for “wisteria”
“Crochet” meets machine knitting techniques: working with short rows 1, June 2017 began to explore some of the fabrics presented in this category in a Portuguese language publication 
I do not speak or read the language, so my swatches are best guess efforts at producing similar knits.
2022: In the latest Mac OS 12, an interesting feature is available now, but not at the time of the original writing of this post.
A: choose the design, in this case, #2, screen grab the image, import it into photos
B: open the image, position the pointer over the text, left click and drag to select the desired text
C: control-click on the selection, choose translate text, and then choose a language. If a specific language selection is not made, the mac translates automatically into the preferred language for your region
D: click and choose copy translation to copy it to clipboard for saving into a document ie Text Edit so that it may be saved for later use or printed if desired
The result offers a starting point but is in need of added editing
1% Career: You weave from right to left.
A)Side of the Car, leave 4A at work and rest at rest. Tecer 6C.
B) On the opposite side car, put 2A to work (the 2A next to those that are
So at work). Weave 1C.
C) On the opposite side of the car, put 2A on rest. Weave 5C. Car is saying-
Ta.
D) Continuously repeat items B and C until the carrera is finished. Do you want to di-
Zer: until the last 2 points are left at work and, with these 2A weaving
6C, instead of 5 (car will be left).
28 Career: weaves from left to right,
C) Continuously repeat items A to D, or soybeans, after the career or
The car will be on the right, fI
Continuously repeat the 19th and 28th career,
Guidelines at the beginning of the pub for #1, translated more slowly with added editing:
CLARIFICATION FOR THE EXECUTION OF THESE POINTS
A: in crochet stitches, the scheme is repeated across the entire width of the machine
B: in the “crochet ends”, braids and flowers, thread only the needles. Islands as indicated by the symbols in the scheme. Alternative: in crochet stitches of gallons and flowers thread the thread only on the needles as indicated in the diagram symbols
C: when starting to weave the car must always be on the right side unless the symbols in the scheme indicate otherwise, for example, crochet stitch #9
D: in crochet stitches count a career whenever the tip of the wire stays at the other end of the machine
E: the tension must be adjusted according to the stitch and thickness of the thread to be used, in general voltages 1-3 are used.”
Some familiarity with larger-scale patterns in this family can help visually with duplicating them independent of the written original language directions.
These fabrics share common hand technique movements across rows, singly, or in pairs. Similar structures are not presented in numerical order in the pub but will be here.
The yarn choice makes a critical difference both in managing the knitting and in how blocking, or not, affects the finished fabric. The knit carriage travels many times across each stitch as the technique is worked, with possibly pilling, so softly spun yarns should be avoided.
Clean the machine of any leftover fibers, while avoiding over-oiling which may leave dark streaks in the finished product.
Cast-ons and bind-offs need to be very loose to compensate for the fact that the completed knit will have considerable sideways stretch. 
Chain cast on 2 in work, 2 out of work, end with 2 needles in work
bring all stitches out to hold except for the first 2 stitches on the right
COR knit 8 rows
push adjacent pair of needles away from the carriage into work position, knit a row to left
COL bring the previously knit pair of needles out to hold
knit 7 rows, end COR
bring adjacent pair of needles opposite carriage into work, knit a row to left, end COL
COL when the last pair of needles is returned to work knit 8 rows
reverse shaping: bring the second pair of needles on left into work, knit a row, push the first pair of needles out to hold, and continue the process for the desired length
The yarn used is a 6X18 rayon, a “no memory” yarn that changes considerably with pressing. The arrows mark an operator error in tracking the sequence, the top and bottom edges are obviously narrower than the resulting mesh. 
Number 11 is a close relative but worked on every other needle 
The rayon used in the previous sample, and a 2/8 wool, were less successful than a 2/11 acrylic in knitting the swatch. The stitches need to be as tight as possible while also needing to be able to knit off properly
make a very loose chain cast-on on an even number of needles, then drop every other chain, taking every other needle completely out of work, and ending with a needle in work
bring all stitches out to hold except for the first stitch on the right
I believe the directions are given for knitting only 2 passes, I preferred the look with the count doubled to 4, so, COR knit 4 rows
push adjacent needle away from the carriage into work position, knit a row to left
COL bring the previously knit pair of needles out to hold
knit 3 rows, end COR
bring adjacent pair of needles opposite carriage into work, knit a row to left, end COL, knit 3 rows
COL when the last pair of needles is returned to work knit 4 rows, continue with
reverse shaping: bring the second pair of needles on left into work, knit a row, push the first needles out to hold, and continue the process for the desired length
In the top part of the swatch I knit 8 rows at starting and ending sequences, feeling the sides were tight, 6 may be the best answer
bing off very loosely after the last stitch is worked for 4 rows
The same directions apply in this instance, the first sample worked with no needles out of work 
I added 3 chains between cast-on and bound-off stitches, making for a better top and bottom edge. The difference in width is highlighted on the bottom right, where I missed doing so between two stitches. At the end of each row, prior to reversing direction, I knit 6 rows rather than 4, ending with 4 rows only on the last needle prior to binding off. The swatch was not steamed or pressed.
This knit begins on every needle 
I cast on chaining over 2 needles, followed by two extra chains where the ladder is expected, cast-off also with two extra chains in ladder spaces. The knit sequence is similar to the previous swatch, but needles are now moved in pairs
COR work first 2 stitches for 2 rows
push two needles on left into work, knit one row to left
COL *push the first 2 stitches to hold, knit one row to the right
COR bring the next two stitches on the left into work, knit one row to left
COL push previous 2 stitches to hold, knit one row to the right**
bring 2 stitches on left into work knit one row to left,
repeat across the row
when the last pair of stitches are left, COL knit two rows on them, and reverse shaping. Ending each sequence with two knit rows will produce fairly straight sides, knitting four rows on end stitches, except prior to binding off, may echo the movement of the in-between spaces and make the ladders at the sides more visible 
Eliminating those ladders or floats, here eyelets are created where stitches are held for two rows. 
Care needs to be taken if stitches are dropped or other patterning errors are made in order to retain the correct pattern. Cast on and bind in this instance were executed with single chains added in between those on needles in work.
Version 1:
COR with the first 2 needles in work, knit 2 rows
COR bring one needle on left into work, knit 1 row
COL bring one needle out to hold opposite carriage, knit one row
COR bring one needle on left into work, knit 1 row
COL bring one needle out to hold opposite carriage, knit one row
repeat until there are 2 needles left in work, knit 2 rows
reverse shaping
end with 2 rows knit on the last pair of stitches before binding off 
Version 2 adds 2 rows knit on every needle between holding pattern reversals, the fabric grows in length far more quickly
Cast on from left to right on every needle
COR knit 2 rows, bring all needles except for the first 2 on the carriage side out to hold
COR with the first 2 needles in work, knit 2 rows
COR bring one needle on left into work, knit 1 row
COL bring one needle out to hold opposite carriage, knit one row
COR bring one needle on left into work, knit 1 row
COL bring one needle out to hold opposite carriage, knit one row
repeat until there are 2 needles left in work, knit 2 rows, end COL
COL push remaining needles into work, knit 2 rows on all needles
COL bring all needles except the first 2 on the left into work, knit 2 rows
reverse shaping, ending with 2 knit rows on the far right
COR push all needles into work, knit 2 rows on all needles
COR bring all needles out to hold except for the first 2 on the right
repeat all
end with 2 rows knit on the last pair of stitches before binding off
chain cast on 2 in work, 2 out of work, end with 2 needles in work
worked in 2 pairs, 4 needles at a time
COR knit 6 rows on the first two pairs of stitches on the right
push pair of needles on the left into work knit one row 
push first 2 of needles out to hold 
knit 5 rows COR
push next pair on left into work, knit one row 
push the third group on its right into hold position, knit 5 rows across remaining 4stitches bring a new group on left into work, knit one row
bring the pair to the far right out of work
repeat process across row
when the last pair of needles on the left is pushed back into work, knit one row
COL knit 10 rows, bring the third pair of needles into work, knit one row
Push the first pair of needles out to work, knit 5 rows, continue with reverse shaping.
If the pattern is to end on the right (or left), knit 6 rows on the last 4 stitches and stop, otherwise when the opposite side position is reached, knit 10 more rows before reversing and continuing in the pattern.
Tracking rows worked: 7 ladders are created in each space, 12 on each end. Depending on yarn and stitch size watch to see that even tension is maintained particularly on the first 2 stitches worked on each side.
The swatch is shown before and after some light pressing, the arrow marks some looser stitches on the side edge. 
Latch tool cast on from left to right, chaining 4 in no needle, future ladder spaces
COR with the first 2 needles in work, knit 2 rows
COR bring the first needle on left into work, knit 1 row to the left on three stitches
COL bring the first needle of the previous pair on the right out to hold, knit one row to the right on two stitches
COR bring the closest needle on the left into work, knit 1 row on three stitches
COL bring the second needle of the previous pair on the right out to hold, knit one row on two stitches
repeat working on 3, then 2 stitch sequences until there are only 2 needles left in work, end COL
COL knit two rows, begin reverse shaping by putting one needle into work on the right, knit one row on three needles
COR bring the first stitch on the far left out to work, knit one row on 2 needles
continue reverse shaping, ending with 2 needles in work on the far right
COR knit two rows on 2 stitches, repeat and continue the process until 2 stitches are left in work on the left, and reverse again
end fabric with 2 rows knit on last 2 stitches in work
latch tool bind off with chaining X 4 in ladder spaces
keep an eye on sequences, the floats are created in series of three, with experience knitting similar patterns, errors become easy to spot during is knitting 
Shell shapes: #4 and # 20 directions are given in the 2017 blog post 
Some of the trims in this pub may be far more easily and quickly executed using tuck stitches.
Bowknot aka butterfly or dragonfly stitch in more than one color
There has been a resurgence of interest in this stitch in the FB machine knitting group and discussion exploring a variety of methods for creating it. The inspiration, taken from a commercial sweater-knit: 
For some single-color variations see Bowknot/ Butterfly stitch on the machine and No longer a mystery pattern.
I program repeats whenever possible, and find it useful in eliminating errors, particularly in longer pieces. My first experiments for this fabric were conducted using the fair isle setting, which is essentially a slip stitch automatically working 2 colors with each pass of the knit carriage single bed.
Slip stitch patterns with hand-transferred stitches, single bed explores some of the methods for bringing slip stitch floats to the knit side of these fabrics, which is part of the hand techniques necessary to achieve the colored versions. As with any knit fabric yarn qualities, color contrasts, and tolerance for proper stitch formation are all variables.
For vertical columns in 2 colors, it is only necessary to program a single, fixed row with a punchcard or electronic, or choose any pixel-based repeat akin to this with full pairs of alternating stripes. I like to plan with selected needles at each end of the sample 
With the machine set to FI, needles not selected will knit a ground color, while selected needles will knit the color in the B feeder. It is easier to manipulate the slip stitch floats from purl to knit side if working in the non-selected groups of needles. Having the columns in odd numbers of stitches makes it easier to handle steps that require finding the center needle in each group if one is wanting to maintain symmetry. In my first test, I manipulated only the selected groups of needles to work the float movements, leaving the floats from the other color undisturbed, which makes the process far more convoluted than it needs to be. In this and the subsequent sample, I manipulated the left and right-hand pairs of floats moving them to the front of the knit, leaving the choice of what to do with the remaining center floats. In A they were brought up on top of the center needle in E position before knitting the next row. In B they are lifted into the hook of the needle and brought out to the B position so that the stitch is knit in color 1, while in C the remaining single stitch floats are simply left alone. In a couple of spots the yarn split, getting hooked up creating bleed-through, and what would result in an issue if that happened on the group of floats that were to be moved. 
As stated, the process is easier and quicker working on non-selected groups. Above, the yellow yarn was thicker than the blue. To maintain proper color selection in the non-selected column, the center needle needs to remain in the B position, with the slipped stitch forming floats below it before the next row knits. If the needle is brought out to E, it will knit in the contrast color, forming floats in that color on the purl side, and a knit stitch in what was planned as an all-solid column on the knit. The results are seen at the top of the first sequence in the swatch. I chose to limit my number of floats to 4 to keep the process manageable, moved stitches on the left of the center needle to the front of the knit, and then followed with those to its right. One of the many things to explore in hand technique fabrics is finding a way to handle tools that may be more comfortable than others, practicing on single blocks of color first can help establish that. Below both yarns are equal in weight and thinner. The floats formed by the color in the B feeder are also hooked up on the center needle in each vertical group in that color, forming a pattern on the purl side as well. 
The needle position for selection for B feeder yarn also needs to be maintained. Bringing the needle out to E ensures it will knit on the next pass. In both of my tests, the slip stitch floats on the knit side lie more horizontally than the lifted-up floats on the purl. 
Other ways of working the fabric, along with a history of the FB thread offered by Claudia Scarpa including a single bed slip stitch version with an English downloadable PDF http://ratatatata.it/dragonfly/.
Her youtube video illustrates a different way of managing floats than mine.
JuliKnit offers 2 videos knit on Silver Reed 1, and 2. Both are knit using the ribber, the first method uses holding to gather loops on each of the beds, and the second begins to address automation for needle selection on the top bed using DAK, with the selection on the ribber remaining manual. The stitch illustrations generated in DK offer knit stitch simulations such as these 
Executing her versions on a Brother machine requires some interpretation. The fabric is constructed using the ribber in conjunction with the main bed. The vertical columns are 5 stitches wide.
Colors are worked one at a time. If a color changer is to be used, an even number of rows would be required for each pattern segment. For 4 floats followed by an all-knit row, the repeat would be 5 rows high, so one consideration would be operating with the second color from the right, requiring free passes. Studio machines release the top of the knit carriage at an angle from the bottom, so that explains the move seen in the video for the carriage to be moved to the right. Brother machines use the slip stitch setting in either or both directions, to achieve that. Using both buttons avoids any confusion. All needles in use must be in the B position for the “free pass” to avoid dropped stitches. The number of rows gets adjusted in the videos eventually to 6.
When working on the top bed, the ribber is set to slip both ways.
For those unfamiliar with Studio settings a brief review: the Studio SRP60N ribber introduced the option for knitting emulating the lili selection in Brother. 
The grey plastic piece on the left of the studio ribber, the autoset lever, when cleared would essentially duplicate setting Brother levers to slip manually in both directions, clearing it again would return it to knit. 
Cast on either EON or EN rib. Transfer needles in a 5X5 rib beginning and ending with a single needle in work on the ribber on the far left and right, setting up the initial needle arrangement for the fabric. Black dots represent needles in work on both beds, and the red ones the initial needles that will be worked in the holding position on the top bed. 
The video knits each color for an even number of rows. Bring the first and last needle into work on the ribber before knitting each row. The remaining stitches are knit only on the main bed. The knit carriage is set to knit, the ribber to slip in both directions. Pick up the chosen color on the left, and knit for an odd number of rows, when the carriages are on the right, push held needles back to work position so they will knit on the pass back to the color changer. The ribber knits the next color. A review of the Brother ribber carriage for those not familiar with it 
COL: the main bed will now slip in both directions, set it accordingly. The ribber only knits. The center needle on the top bed that held the butterflies is transferred down to the ribber, illustrated in the red dots over black ones. The center needles in the blank areas on the ribber, blue dots, are brought up to hold, the ribber levers are set to knit in both directions, holding levers are set to hold in both directions as well, 
knit for an odd number of rows, with carriages on the right, push held needles back to work position so they will knit on the pass back to the color changer. COL: the knit carriage changes back to knit settings, and the ribber slip setting in both directions is restored. The center stitches that formed ribber butterflies are transferred up to the top bed, and needles at the center of the blank areas on the top bed are brought out to hold. The color is changed, and the process begins again. 
My first efforts were met with dropped stitches after a few rows and expletives. My second effort fared no better, I simply could not avoid dropped stitches on either bed, perhaps because of my yarn choice and the small tension it required. Working on the single bed once more, using the slip stitch setting and knitting one color at a time, I achieved a fabric more similar to the original photograph. The chart reflects the number of needles in my test swatch, with a 2 knit stitch border added on each side 
Each color knits for 4 rows. At the end of each 4-row sequence, the non-selected needles allow for manipulation of the floats. 
The transfers in the piece begin on row 5. Before the next row is knit in the alternate color, the slip stitch floats are reconfigured, bringing stitches 1 and 2, 4 and 5 in each group to the knit side of the fabric, leaving the center floats undisturbed. 
Bring the whole group out to the E position so they will form knit stitches with the first row of contrast as the carriage moves to the right. 
Knit 4 rows. The carriage will once again be on the left unless 2 carriages are in use from opposite sides. The center needle in each group of 5 will be left unselected. 
Lift floats up onto that center needle, and bring it out to E position so that it will form a knit stitch in the next color to be used. 
The final result is closer to the original
Pile_carpet stitch knitting on Passap and Brother KMs 3
Studio and Toyota machines could produce this type of stitch easily. Many efforts have been made over the years to produce the same fabric on Passap and Brother.
I was asked via a blog comment in my previous post #1 on this topic about creating a single color all-over pile on the Passap machine and have added these instructions
Executed with the lights off:
Cast on and begin with all stitches transferred to the back bed.
The back lock is set to EX, the front to CX, pushers are not needed
Knit two rows using those settings, and use a stitch ditcher to drop loops formed on the front bed.
One color carpet stitch, if programming technique #256, ignore console instructions
1. cast on so that all stitches are on the back bed
2. knit a few rows in stocking stitch testing for the tightest tension at which your yarn will knit, and experiment with the front lock tension to produce as large a loop as possible that will also drop off properly. Begin knitting your test with locks on the right side:
3. bring the back bed pushers to the in 1X1 arrangement, and set the back lock to FX with the left arrow key, not BX. Do not use the AX setting, it will tuck in both directions. All needles will tuck moving from right to left, and knit on their return to the right
3. with the front lock set to LX, it will knit on all needles when moving to the left creating loops on the front bed, while the back lock does the same, slips all needles moving on the front bed when moving back to the right.
When the locks reach the left side there will be loops on every needle on both beds. As they move from left to right, the needles on the back bed will knit, securing the loops there and anchoring the ones on the front bed while the front bed is slipped
4. with locks again on the right side, use stitch ditcher or another tool to drop off loops on the front bed, returning needles to proper work position, follow with a pass using a single eye tool to push loops between the beds, checking that none are left in the needle hooks
*make 2 more passes with locks from and returning to the right, drop off loops**, and continue from * to **
The difference in the size of the long stitches between loop rows in the photo was eliminated by tightening the tension on the back lock, it is evident that they are anchored more evenly in those segments as well. As with any fabric, the larger the intended piece, the more likely some further adjustments may have to be made. 
Alternative settings for one color pile: Tech 256, back lock FX and both arrow keys, pushers one up, one down, front bed to LX, drop stitches every 2 rows.
For 2 color work, Tech 184, same settings.
For a similar effect on Brother machines, begin with all stitches in work on the ribber, with the settings: opposite tuck buttons, the main bed knits to left, ribber knits to right anchoring loops formed on the previous row 
the loops, formed on every needle on both beds with the move to the left 
anchored in place on the ribber needles as the only the ribber knits as it returns to the right 
while the carriage is on the right, drop all stitches on the main bed, 
making certain no loops are stuck on gate pegs on the main bed, 
repeat the process throughout the piece. Occasionally skipped needles and their missing loops may not be noticeable, any loops hung up on gate pegs will be visibly longer. Tension needs to be “just right”. My first efforts, shown sideways 
Knitting was smoother with a change in yarn. An extra needle on each side of the knit on the ribber is brought out to hold manually to ensure their stitches knit with every pass of the ribber carriage. I prefer the all-over pile with its loops formed on the top bed. There were nearly no incidences of loops catching on gate pegs on the main bed. One of the drawbacks is that the main bed needles need to be dropped and brought back to the B position manually, bald spots will result where any needles are not returned to the proper work position, so they will not pick up loops. 
The traditional hack for other than Studio or Toyota kms involved this process:
to knit, bring up the first and last needle to the hold position on the ribber to ensure they knit when both carriages are on the right and the ribber will tuck on every needle as the carriages move to the left. The carriage settings: Loops are formed on the main bed as it knits from the right to the left, and slips on its return to the right. The ribber tucks on every needle moving to the left and knits on every needle returning to the right, anchoring the main bed loops. After the carriages reach the right side, loops on the main bed are dropped, and the process is repeated.
The results are dramatically different. If considering patterning on the main bed with the addition of a second color or creating isolated motifs whether on a single color or striped background, anchoring loops by tucking on every needle is no longer possible, making reverting to EON needle selection on ribber a necessity. Loops formed where no stitches are knit on the main bed would only sit in the hooks on the ribber and create a mess. Hence the “hack” where lili buttons and tuck stitch in both directions so that loops are knit off on the next pass, and with 4 rows knit before dropping stitches so that the maximum pressure is put on those loops to hold them in place. This requires the tightest possible tension on the ribber, and by default, the EON tuck will want to spread the fabric further apart. I have found this version a failure in producing a stable fabric with a satisfying pile formation. 
Returning to the pursuit of pile loops in pattern on Brother: my first effort with a simple, linear shape produced separation aside the loops akin to that seen in isolated FI motifs, both when using the ribber or the main bed to create the loops. Here a simple checkerboard was hand-selected, there was separation along the vertical edge like that seen in isolation motifs 
and this is likely my last try at the single pile in a pattern using every other needle tuck on the ribber with the release of stitches every 4 rows. I actually like the elongated stitches in the ground but found the stitches planned for loops simply did not release easily or at all, 
using thinner, smooth yarn resulted in breakage, while adding elastic obliterated loops, and wooly nylon simply broke regularly. It would appear if pile knitting on Japanese machines is the goal, by all means, add a studio KM to your stash ;-).