Pin Assignments and Cable Wiring
RS-422 Cable Wiring
(VXC-142(i)AU, VXC-182iAU and VEX-142(i) CN1)
VXC Card
CN1
Device
PIN
Signal
PIN
Signal
1 TxD-
4 RXD-
2 TxD+
3 RxD+
3 RxD+
2 TxD+
4 RxD-
1 TxD-
5 GND
5 GND
6 RTS-
9 CTS-
7 RTS+
8 CTS+
8 CTS+
7 RTS+
9 CTS-
6 RTS-
RS-485 Cable Wiring
(VXC-142(i)AU, VXC-182iAU and VEX-142(i) CN1)
VXC Card
CN1
Device
PIN
Signal
PIN
Signal
1 DATA-
1
The RS-485 bus is a differential (balanced) signal, thus you cannot wire the
Data+ with Data- directly for a single port loop-back test. It will not work at all!
DATA-
2 DATA+
2 DATA+
4
VXC-112(i)AU/142(i)AU/182iAU, VEX-112(i)/142(i) Quick Start Guide
