Acces PCI-ICM422/2, User Manual

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Page 6-1
Manual MPCI-ICM4S.F1b
Chapter 6: Connector Pin Assignments
A breakout cable is delivered with each card. The cable mates with a 37-pin connector on the card
mounting bracket and, at the other ends of the cable, the popular 9-pin D sub-miniature male
connector is used to interface with your communication lines. Those connectors are equipped with
4-40 threaded standoffs (female screw lock) to provide strain relief.
Pin RS 422 Sign als RS 485 Sign als
1 Rx-
2 Tx+ Tx+ and Rx+
3 Tx- Tx- and Rx-
4
5 Ground Ground
6
7
8
9 Rx+
Table 6-1: Connector Pin Assignments
The cards can be ordered without the breakout cable. In that case your communication cables will
connect directly to the 37-pin D style connector on the card mounting bracket. Pin assignments are
as follows:
Com Port A Com Port C
Pin 37 Tx+ Pin 27 Tx+
Pin 19 Tx- Pin 9 Tx-
Pin 17 Rx+ Pin 7 Rx+
Pin 36 Rx- Pin 26 Rx-
Pin 18 GND Ground Pin 8 GND Ground
Com Port B Com Port D
Pin 32 Tx+ Pin 21 Tx+
Pin 14 Tx- Pin 3 Tx-
Pin 12 Rx+ Pin 1 Rx+
Pin 31 Rx- Pin 20 Rx-
Pin 13 GND Ground Pin 2 GND Ground
Note
For RS485 applications, inputs and outputs should be connected to the Tx+ and Tx- pins at each
port.