en
cz

Communication with electricity meter ZPA EMU30.x7RS

Communication works for SoftPLC (not MiniPLC) and Vision with driver via M080, 2400, 7, Even, 1, without flow control.

Attention - in tech. ZPA specification No. C-7.2.22-August 2001 is the reverse polarity of RS485 on the RJ45 connector ("FCC Plug").

The correct pinout is as follows:
1 - power supply
2 - power supply
3 - power supply
4 - RS485 -
5 - RS485 +
6 - power supply 2
7 - power supply 2
8 - power supply 2

The power supply can be 12… 24 V DC (any polarity) or 24 V AC. In order for this to communicate, the 12..24 V power supply must be connected even when the meter is under 230 V voltage!