Using EspEasy RS485 MODBUS RTU to read OR-WE-504

[ozogp]

Hello,
I am a beginner, please be understanding.

I would like to read the readings from the OR-WE-504 ORNO meter using RS485 MODBUS RTU. I connected the UART TTL RS485 MAX485 5V converter to the Wemos D1.

Wemos_D1_mini_RS485_bb-1.jpg

The ORNO counter was connected to the converter.
Unfortunately, I do not know what Device to choose to be able to read Voltage (V), Current (A) Active Power (W) Total Energy (Wh)

I would like to present the obtained data in Domoticz

A heartfelt request for help

meter ORNO OR-WE-504
https://www.tme.eu/pl/details/or-we-504 ... nkow/orno/

[Ath]

I don't think (though I don't know all supported MODBUS Energy devices), ESPEasy supports this meter model directly, unless it is compatible with another supported model like Eastron SDM 120/220/230/630, Accuenergy AcuDC24x or DDS238-x. These are all in the 'energy' .bin files.

There is a Domoticz Python driver available for the Orno WE-504 over here: https://github.com/apichlinski/orno-reader-domoticz
This has a few advantages over an ESPEasy driver, biggest being it supports all available measurements in 1 instance, where in ESPEasy that would be 'limited' to 4 per task (but there can be multiple tasks with different measurements when implemented correctly). Distance between the meter and Domoticz shouldn't be an issue, as RS-485 has a very robust signal, even over longer cables, but you may need (or already have, seeing the schematics) a RS-485 <-> RS-232 converter.