Interfacing Protoair To Devices; Device Connections To Protoair; Wiring Field Port To Rs-485 Serial Network; Figure 6: Rs-485 Connections From Devices To The Protoair - SMC Networks ProtoAir FPA-W44 Startup Manual

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
RS-485 +
RS-485 -
RS-485 GND
4.2

Wiring Field Port to RS-485 Serial Network

•
Connect the RS-485 network wires to the 3-pin RS-485 connector on the R2 port.
o
Use standard grounding principles for RS-485 GND
•
See Section 5 for information on connecting to an Ethernet network.
BMS
Wiring
RS-485 +
RS-485 -
-
ProtoAir Pin
Pin # Assignment
Pin 1 RS-485 +
Pin 2 RS-485 -
Pin 3 RS-485 GND

Figure 6: RS-485 Connections from Devices to the ProtoAir

ProtoAir Pin
Pin # Assignment
Pin 1 RS-485 +
Pin 2 RS-485 -
Pin 3 RS-485 GND

Figure 7: Connection from ProtoAir to RS-485 Field Network

Page 12 of 63
Bosch ProtoAir Start-up Guide
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