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4-20 Chapter 4: Appendix D - RS-485/422 Option
Intellicon-NT960/PCI User's Manual, ver. 0.02
RS-485/422 Cable Wiring
You can wire your ACM/Flex16 with the RS-485/422 option in
various ways to communicate with RS-485/422 peripherals. This
section will describe a few examples of RS-485/422 cabling
schemes.
Figures 18, 19 and 20 describe 8 wire, 4 wire and 2 wire cabling
schemes between a port on the ACM/Flex16 to a port on the RS-
485/422 peripheral.
Figure 18: RS-485/422 wiring diagram(8 wire)
RTS +
RTS -
CTS +
CTS -
TxD +
TxD -
RxD +
RxD -
RxD + TxD +
RxD - TxD -
RTS -
CTS -
RTS +
CTS +
SR SR
ACM/Flex16
RS-485 peripheral
2
3
4
5
6
7
8
9
1
Figure 19: RS-485/422 wiring diagram(4 wire)
RTS +
RTS -
CTS +
CTS -
TxD +
TxD -
RxD +
RxD -
RxD + TxD +
RxD - TxD -
RTS -
CTS -
RTS +
CTS +
SR SR
ACM/Flex16
RS-485 peripheral
2
3
4
5
6
7
8
9
1