Metcom | a-tronix Documentation

Metcom Energy Meters

Supported Devices

Device Type	Modbus TCP (Ethernet)	RS485
Metcom MCS301	✅	✅
Metcom Blue2box	✅	❌

For correct ethernet wiring: Follow the .

M-Bus

General M-Bus Energy Meters

P1Api

For correct RS485 wiring: Follow the guidelines for RS485 wiring.
If the wiring shown in the table below is incorrect, please let us know.
There is no general consensus in the industry about the usage of A and B for the RS485 polarity, so it may be counterintuitive and opposite of what you might expect for some devices.

Device	a-TroniX Controller model OM1	a-TroniX Controller model IG8	RS485-USB converter	RS485-Ethernet converter
A	RS485 A	RS485_POS	RS485 A	TX+
B	RS485 B	RS485_NEG	RS485 B	TX-
N/A	RS GND	GND	Not available	G