Product data

APCI-7xxx-3 Figures and Tables
Table 7-9: Pin assignment of port 7
Pin RS 232 RS 422 RS 485 RS422PEP Current Loop
4 TxD RA Tx / Rx + Rx+ +RCV-CL-DATA
5 RxD TB Tx- -XMIT-CL-DATA
3 GND GND GND
25 -
24 RTS RTS- Tsource
23 CTS RTS+ Rsource
44 DCD TA Tx+ +XMIT-CL-DATA
43 DSR
100 Ω 120 Ω
CTS+
63 DTR Rab CTS- CTS-
62 RI RB Tx / Rx - RTS- -RCV-CL-DATA
Table 7-10: Pin assignment of port 8
Pin RS 232 RS 422 RS 485 RS422PEP Current Loop
60 TxD RA Tx / Rx + Rx+ +RCV-CL-DATA
61 RxD TB Tx- -XMIT-CL-DATA
40 GND GND
42 RTS RTS- Tsource
41 CTS RTS+ Rsource
22 DCD TA Tx+ +XMIT-CL-DATA
21 DSR Rab CTS+ CTS+
2 DTR
100 Ω 120 Ω
CTS-
1 RI RB Tx / Rx - RX- -RCV-CL-DATA
TA: Tx422+ RA: Rx422+
TB: Tx422- RB: Rx422-
Rab: Connection to the terminal resistor
(1): Cable connection to 100 Ω/120 Ω terminates the lines RS422/RS485 with
the resistor 100 Ω/120 Ω.
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