39 PCI Communication User Manual
Chapter 5 Pin Assignments and Wiring
5.1.4 PCI-1612B/C
The following tables show the cable pin assignments for connecting a female DB37 connector
(bracket) to a male DB9/DB25 connector for the PCI-1612B/C cards in RS-232, RS-422 and
RS-485 modes.
Table 5.6: PCI-1612B/C Male DB9 (Cable)
Pin RS-232 RS-422 RS-485
1 DCD Tx- Data-
2 RxD Tx+ Data+
3TxDRx+-
4DTRRx--
5 GND GND GND
6DSRRTS--
7RTSRTS+-
8CTSCTS+-
9RICTS--
Table 5.7: PCI-1612B/C Male DB25 (Cable)
Pin RS-232 RS-422 RS-485
2 1_TxD 1_RxD +
3 1_RxD 1_TxD+ 1_Data+
4 1_RTS 1_RTS+ -
5 1_CTS 1_CTS+ -
6 1_DSR 1_RTS- -
7 1_GND 1_GND 1_GND
8 1_DCD 1_TxD- 1_DATA-
20 1_DTR 1_RxD -
22 1_RI 1_CTS -
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