Electroknit Serial Connections

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Line 26: Line 26:
  | 8 | 6 | 4 | 2 |
  | 8 | 6 | 4 | 2 |
  |___|___|___|___|
  |___|___|___|___|
 +
 +
The pin numbering is shown as they are labeled on the knitting machine PCB,
 +
and does not agree with other documents I found on the web.
 +
 +
{| border="1"
 +
|-
 +
| colspan="4" align="center"| Knitting Machine Connections
 +
|-
 +
|
 +
| colspan="2" align="center"| Knitting Machine
 +
| colspan="2" align="center"| Floppy Drive
 +
|
 +
|-
 +
! Pin
 +
! KM Signal
 +
! KM I/O
 +
! FD I/O
 +
! FD Signal
 +
! Notes
 +
|-
 +
| 1
 +
| Ground
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|
 +
|
 +
|-
 +
| 2
 +
|
 +
| Out
 +
| Tied to 5, Pulled up through 1K resistor
 +
|-
 +
| 3
 +
| CTS?
 +
| In
 +
| (Tie to pin 2)
 +
|-
 +
| 4
 +
| No Connection
 +
|
 +
|
 +
|-
 +
| 5
 +
|
 +
| Out
 +
| Tied to 2, Pulled up through 1K resistor
 +
|-
 +
| 6
 +
| RXD
 +
| In
 +
|
 +
|-
 +
| 7
 +
| TXD
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| Out
 +
|
 +
|-
 +
| 8
 +
| RTS?
 +
| Out
 +
| Follows state of Pin 3 (buffered)
 +
|}

Revision as of 14:13, 1 March 2012

Connecting to Brother Knitting Machines

The external Disk Drive Connection

Some models of knitting machine interface with an external floppy disk drive. By using this interface with the knitting machine, we can save and restore patterns from the machine.

The interface is a serial data connection at 9600 bits per second, with flow control signals, but the signal voltages are not RS-232 standard.

Connector Pinout for the knitting machine and external floppy drive

The connectors on both the knitting machine and external disk are 8-pin keyed 2x8 headers with pins on on 0.1 inch centers The knitting machine and external disk drive are connected.

Km connector.jpg

In this photo, there is a dot near pin one.

Here is the pinout of the drive connector on the knitting machine: 

      _____
      |   |
______|___|______
|   |   |   |   |
| 7 | 5 | 3 | 1 |
|___|___|___|___|
|   |   |   |   |
| 8 | 6 | 4 | 2 |
|___|___|___|___|

The pin numbering is shown as they are labeled on the knitting machine PCB, and does not agree with other documents I found on the web.

Knitting Machine Connections
Knitting Machine Floppy Drive
Pin KM Signal KM I/O FD I/O FD Signal Notes
1 Ground
2 Out Tied to 5, Pulled up through 1K resistor
3 CTS? In (Tie to pin 2)
4 No Connection
5 Out Tied to 2, Pulled up through 1K resistor
6 RXD In
7 TXD Out
8 RTS? Out Follows state of Pin 3 (buffered)
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