Has anyone tried to use SRNE (Modbus ?) communication protocol with MakeskyBlue, PowMR or EASUN SCCs ?

[akumd]

I saw in several places that, MakeskyBlue, PowMR or EASUN Solar Charge Controllers are all re-brands of SRNE (or Voltronic) AND they are able to use SRNE Software applications with MakeskyBlue, PowMR or EASUN SCCs.

If this is true, I am guessing one should be able to communicate (read/change settings) with a MakeskyBlue, PowMR or EASUN SCC using SRNE published protocol(MODBUS) in a software application.

Is there any one who tried this ?

 

[Luk88]

I'm very much interested in this. The main question is, are these using true modbus protocol?

I have a DEYE SMK 3K and also a EASUN SMH-ii-7k, both came with identical "wifi dongles". I haven't powered up the EASUN yet as I haven't got a battery yet, but I'm pretty sure if both use the same WIFI dongle they should use the same protocol.

The way these dongles work supposedly is they encapsulate Modbus (which is serial) into Solarman5 TCP protocol. There exist various open source libraries that let you use it. For example https://github.com/jmccrohan/pysolarmanv5 and for DEYE this software https://pypi.org/project/deye-controller/

Why am I talking abiut Deye in a thread about ESUN? Because I'm hoping this software can be fairly easily modified to work with EASUN with a wifi dongle.

However if we want to talk directly via Modbus serial, this open source project is a good starting point: https://github.com/cole8888/SRNE-Solar-Charge-Controller-Monitor there is a SRNE modbus manual there and some example software for arduino etc to read some data. Personally I'd much prefer if there was a python example that could be run on a linux PC or a raspberry PI, but this is much better than nothing.

I'm interested in this to be able to have my PC/controller switch charging and source priorities of my EASUN smh-ii-7k on the fly.

 

[hotnoob]

just implemented SRNE's modbus for my project for v1.1.2.

implement srne v3.9 protocol · HotNoob/PythonProtocolGateway@940a2ec

Python Protocol Gateway reads data via Modbus RTU or other protocols and translates the data for MQTT. In the long run, Python Protocol Gateway will become a general purpose protocol gateway to translate between more than just modbus and mqtt. Growatt, EG4, Sigineer, SOK, PACE - implement srne...

github.com

untested... a lot of weird things in their documentation. so could need a bit of testing to get it going well.

writing is sitll in its infancy for the project in general; on my todo list. so can't write to all registers yet.

 

[NestoriusBIG]

Hi,

I am using a variation of a different python modus project from GitHub on my 10kW SRNE hybrid inverter:

GitHub - shakthisachintha/SRNE-Hybrid-Inverter-Monitor: Python based remote monitoring and controlling system for SRNE hybrid inverters.

Python based remote monitoring and controlling system for SRNE hybrid inverters. - shakthisachintha/SRNE-Hybrid-Inverter-Monitor

github.com

I can read all parameters but have trouble configuring through modus.
I am able to configure the energy save mode (E20C) but all other RW parameters return a 0BH error (insufficient permissions) when I try to write to them. I noticed that the iPow Software from SRNE can’t set these either, also contacted their customer support with no success. There might an additional step required in order to acquire the permission.

Are you able to configure any of the useful parameters on the SRNE inverter?