PCI Communication User Manual 40
Table 5.8: PCI-1612B/C Female DB37 (Bracket)
Pin RS-232 RS-422 RS-485 Pin RS-232 RS-422 RS-485
1 - - - 20 3_RI 3_CTS- -
2 3_DCD 3_TxD- 3_Data- 21 3_DTR 3_RxD- -
3 3_GND 3_GND 3_GND 22 3_DSR 3_RTS- -
4 3_CTS 3_CTS+ - 23 3_RTS 3_RTS+ -
5 3_RxD 3_TxD+ 3_Data+ 24 3_TxD 3_RxD+ -
6 4_RI 4_CTS- - 25 4_DCD 4_TxD- 4_Data-
7 4_DTR 4_RxD- - 26 4_GND 4_GND 4_GND
8 4_DSR 4_RTS- - 27 4_CTS 4_CTS+ -
9 4_RTS 4_RTS+ - 28 4_RxD 4_TxD+ 4_Data+
10 4_TxD 4_RxD+ - 29 2_RI 2_CTS- -
11 2_DCD 2_TxD- 2_Data- 30 2_DTR 2_RxD- -
12 2_GND 2_GND 2_GND 31 2_DSR 2_RTS- -
13 2_CTS 2_CTS+ 32 2_RTS 2_RTS+ -
14 2_RxD 2_TxD+ 2_Data+ 33 2_TxD 2_RxD+ -
15 1_RI 1_CTS- - 34 1_DCD 1_TxD- 1_Data-
16 1_DTR 1_RxD- - 35 1_GND 1_GND 1_GND
17 1_DSR 1_RTS- - 36 1_CTS 1_CTS+ -
18 1_RTS 1_RTS+ - 37 1_RxD 1_TxD+ 1_Data+
19 1_TxD 1_RxD+ + - - - -