PCI-COMMUNICATION User Manual 82
5.1.8 PCI-1611U
The following table and figure show the pin assignments for the PCI-
1611U card’s male DB9 and male DB25 on the cable and female DB37
on the bracket in RS-422 and RS-485 modes.
Table 5.14: PCI-1611U male DB9 on cable
Pin RS-422 RS-485
1 TxD- Data-
2 TxD+ Data+
3RxD+ -
4RxD- -
5GND GND
6RTS- -
7RTS+ -
8CTS+ -
9CTS- -
Table 5.15: PCI-1611U male DB25 on cable
Pin RS-422 RS-485
2RxD+ -
3TxD+ Data+
4RTS+ -
5CTS+ -
6RTS- -
7GND GND
8TxD- Data-
20 RxD- -
22 CTS- -
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