Wiring Diagram - ProFire PF3100 Series Product Manual

Terminal Descriptions
Power, Common
Input power 12/24 VDC, 6.3A max.
EGND
Internally connected to Common; must be wired to a nearby Earth Ground.
RS-485 D+/D-
-7V to 12V absolute.
+/- 3VDC differential recommended.
The baud rates supported are from 9600 baud to 19200.
RS-485 Reference (Terminal 10)
Shared common ground with customer PLC. Must be wired in.
Terminator Selector Switch
The termination selector switch is used to apply a 120ohm resistance to the signal. By applying this resistance,
it in turn "terminates" the signal. It should only be used when you want to terminate the signal.

4. Wiring Diagram

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PF3100 IO Modbus Card Product Manual
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