Appendix A.1.1. Connection And Operation Of The Rs-422 Quickserver; Figure 23: Rs-422 Connectors - SMC Networks FieldServer QuickServer FS-QS-12 0 Series Startup Manual

Appendix A.1.1. Connection and Operation of the RS-422 QuickServer

RS-422 Connector
Pin 1-2: TX +/- (Differential TX outputs: All + signals must be connected to each other, and same applies
to - signals; no +/- signals may be crossed)
Pin 3-4: RX +/- (Differential RX inputs: All + signals must be connected to each other, and same applies
to - signals, no +/- signals may be crossed)
Pin 5: SHD (Shield connection, must be connected on at least one side of the bus, but not necessarily
on both sides)
POWER Connector
Please note that AC voltage is not supported on the RS-422 carrier, and that DC voltage range is
~20VDC to ~28VDC.
Pin 1: +24V (DC power requires this pin be used for the positive voltage)
Pin 2: 0V (DC power requires this pin is used for ground / return voltage)
Pin 3: FG (This pin needs to be connected to EARTH or noise free reference point i.e. CHASSIS)
5-pin RS-422 3-pin Power
Connector

Figure 23: RS-422 Connectors

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QuickServer Start-Up Guide
Connector