PM 800 Series | SmartgridOne Documentation

Controller Devices Energy Meter Schneider

Schneider-Electric PM 800 Series Energy Meters

Supported Devices

Device Type	Modbus TCP (Ethernet)	RS485	Instruction video
Schneider-Electric PM 820	❌	✅
Schneider-Electric PM 850
Schneider-Electric PM 870

Wiring

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	SmartgridOne Controller model OM1	SmartgridOne Controller model IG8	RS485-USB converter	RS485-Ethernet converter
D1/+	RS485 A	RS485_POS	RS485 A	TX+
D0/-	RS485 B	RS485_NEG	RS485 B	TX-
0V	RS GND	GND	Not available	G

Configuration

NOTE: RS485 Device Addresses

You MUST give each device a unique address on the RS485 bus. Check the device manual for instructions.
Use lower addresses first (1, 2, ...) because the SmartgridOne Controller will find them faster!
For each device, it is generally recommended to keep the factory-default baud rate, parity, and stop bits. The SmartgridOne Controller will scan those first.

Check the device manual on how to enter the energy meter's configuration menu.

Last updated October 12, 2026

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Supported Devices Wiring Configuration