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LAARS’ ProtoNode Startup Guide
Page 15 of 43
3.2 Device Connections to ProtoNode
ProtoNode 6 Pin Phoenix connector for RS-485 Devices
•
The 6 pin Phoenix connector is the same for ProtoNode FPC-N34 (BACnet) and FPC-N35
(LonWorks).
•
Pins 1 through 3 are for Modbus RS-485 devices.
o
The RS-485 GND (Pin 3) is not typically connected.
•
Pins 4 through 6 are for power.
Do not connect power
(wait until Section 4).
Device Pins
ProtoNode Pin
#
Pin
assignment
Pin RS-485 +
Pin 1
RS-485 +
Pin RS-485 -
Pin 2
RS-485 -
Pin GND
Pin 3
RS-485 GND
Power In (+)
Pin 4
V +
Power In (-)
Pin 5
V -
Frame Ground
Pin 6
FRAME GND
Figure 8: Power and RS-485 Connections
The LAARS Gateway LER and RER Startup Guide
Page 15 of 43
20
Industrial Way, Rochester, NH, USA 03867
•
(800) 900-9276
•
www.Laars.com
1604 Document 4236E