Product data

APCI-7xxx-3 Figures and Tables
7.4 Pin assignments (APCI-7500-3): RS422 with
handshake signals
With the module MX422-PEP you can use the modem control signals RTS and
CTS.
Table 7-11: Pin assignment of the 37-pin connector: RS422 with
handshake signals
RS422
Pin
Pin
RS422
IA 20 1 TA
Port 4 CB 21 2 TB Port 4
CA 22 3 RA
RB 23 4 IB
TA 24 5 GND
TB 25 6 IA
Port 3 RA 26 7 CB Port 3
IB 27 8 CA
GND 28 9 RB
IA 29 10 TA
Port 2 CB 30 11 TB Port 2
CA 31 12 RA
RB 32 13 IB
TA 33 14 GND
TB 34 15 IA
Port 1 RA 35 16 CB Port 1
IB 36 17 CA
GND 37 18 RB
19
TA: Tx422+ RA: Rx422+
TB: Tx422- RB: Rx422-
IA: CTS+ CA: RTS+
IB: CTS- CB: RTS-
7.5 Pin assignments (APCI-7420-3 and APCI-7300-3):
RS422 with handshake signals
Table 7-12: Pin assignment of the 9-pin connector:
RS422 with handshake signals
RS422
Pin Pin
RS422
IA 6 1 TA
CB 7 2 TB
CA 8 3 RA
RB 9 4 IB
5 GND
TA: Tx422+ RA: Rx422+
TB: Tx422- RB: Rx422-
IA: CTS+ CA: RTS+
IB: CTS- CB: RTS-
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