CommandFusion Wiki

Documentation Resources

User Tools

Site Tools



Table of Contents


This card adds additional RS232 and RS422/485 connectivity to the Solo controller.
It features 2-4 configurable serial ports, exactly the same as the MOD-COM4 product.


The card has two 6-pin connectors, the top row and bottom row.
Each row can be configured as either:

  • 2 x RS232 without flow control
  • 1 x RS232 with flow control
  • 1 x RS485 half-duplex
  • 1 x RS485/422 full-duplex

Note that when using any RS232 mode in combination with RS485 or RS422 (any duplex type), the RS232 must be on ports 3 and/or 4 (bottom row).
RS232 can never be in ports 1 or 2 (top row) when using alongside RS485 or RS422 (bottom row).

For more details on the configuration options, please see the MOD-COM4 CFLink documentation which is the same for the CARD-COM4.


Pinouts for the various modes each connector can be configured to are as follows:

2 x RS232 without flow control

  1. TX-1
  2. Ground
  3. RX-1
  4. TX-2
  5. Ground
  6. RX-2

1 x RS232 with flow control

  1. TX
  2. Ground
  3. RX
  4. RTS
  5. Ground
  6. CTS

1 x RS485 half-duplex

  1. Data + (B)
  2. Ground
  3. Not Connected
  4. Data - (A)
  5. Ground
  6. Not Connected

1 x RS485/422 full-duplex

  1. TX +
  2. Ground
  3. RX +
  4. TX -
  5. Ground
  6. RX -
hardware/cards/card-com4.txt · Last modified: 2015/07/16 04:35 by jarrod