4-20 Chapter 4: Appendix D - RS-485/422 Option

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)

ACM/Flex16

RS-485 peripheral

2

TxD +

RxD +

TxD -

RxD -

3

RxD +

TxD +

1

RxD -

TxD -

4

RTS +

RTS +

8

CTS +

CTS +

9

RTS -

RTS -

7

CTS -

CTS -

6

SR

SR

5

 

 

Figure 19: RS-485/422 wiring diagram(4 wire)

ACM/Flex16

RS-485 peripheral

2

TxD +

RxD +

TxD -

RxD -

3

RxD +

TxD +

1

RxD -

TxD -

4

RTS +

RTS +

8

CTS +

CTS +

9

RTS -

RTS -

7

CTS -

CTS -

6

SR

SR

5

 

 

Intellicon-NT960/PCI User's Manual, ver. 0.02