Siemens ProtoAir FPA-W44 - Interfacing ProtoAir to Devices; Device Connections to ProtoAir

Siemens ProtoAir Start-up Guide
Page 11 of 66
4 INTERFACING PROTOAIR TO DEVICES
4.1 Device Connections to ProtoAir
The ProtoAir has a 3-pin Phoenix connector for connecting RS-485 devices on the R1 port.
NOTE: Use standard grounding principles for RS-485 GND.
Device Pins
ProtoAir
Pin #
Pin
Assignment
RS-485 +
Pin 1
RS-485 +
RS-485 -
Pin 2
RS-485 -
RS-485 GND
Pin 3
RS-485 GND
Figure 5: RS-485 Connections from Devices to the ProtoAir
G
-
+
Figure 6: Device RS-485 Wiring Setup