Systech Corporation RCS/5000, Hardware Manual

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28 Using the RCS Port Server in RS-422 or RS-485 Mode
Connecting the RCS Port Server
RCS/5000
Connect the RCS/5000 to the network using any serial port. The RJ-45 pinouts for the
RCS/5000 in RS-422 and RS-485 modes are:
The RS-485/422 RJ-45 pin assignments are:
The pins designated as not used should have nothing connected to them.
Be sure the wires are terminated as indicated in the wiring diagrams in the previous section.
In addition, as a fail safe to prevent floating wires, the RCS/5000 provides internal 2k bias
resistors that pull the lines to a known state when they are not being driven. The bias
resistors cannot be removed or altered.
RCS/6000
Connect the RCS/6000 to the network using any serial port. The DB-9 pinouts for the
RCS/6000 in RS-422 and RS-485 modes are:
PIN Signal
1 Do Not Use
2 TXA
3 GND
4 TXB
5 RXB
6 GND
7 RXA
8 Do Not Use