SPRSUN Modbus plugin

[Sateetje]

I've made a modbus plugin to read and write some parameters of a SPRSUN heat pump. It can use an USB-RS485 stick or a TCP controller (like ZLAN 5143D)

Please take a look, some refactoring is needed imho (but I'm not a dev on daily basis).

https://github.com/Sateetje/SPRSUN-Modbus

ZLAN Settings:
Serial settings: 19200-8-N-1 (no flow control)
Network settings: Mode = TCP Server
Multi-Master settings: Protocol = None and Multi-Master = Disable

[psubiaco]

Wow, very nice.
It should be good to have a wiki page listing all heat pumps that can be managed by Domoticz, with links to the associated plugins. It can be helpful for those who have to purchase a new heat pump!
I also have a heat pump, EMMETI brand, connected by Modbus (I control it by a lua script to regulate the used power optimizing own-consumption), but it has not good parameters as your.
Maybe in the future I'll get your plugin to adapt it to my heat pump.

[Alain]

Very nice looking script. I'm still using the outdated one from user Domoticx and having to assign new hardware for every register. Looking forward to start using this with my SPRSUN heat pumps.

[Sateetje]

Wow, very nice.
It should be good to have a wiki page listing all heat pumps that can be managed by Domoticz, with links to the associated plugins. It can be helpful for those who have to purchase a new heat pump!
I also have a heat pump, EMMETI brand, connected by Modbus (I control it by a lua script to regulate the used power optimizing own-consumption), but it has not good parameters as your.
Maybe in the future I'll get your plugin to adapt it to my heat pump.

You can read a lot of registers:
https://areariservata.emmeti.com/en/vfm ... 061940.pdf

So give it a try

[psubiaco]

I know that long list of parameters, that I used to control my heatpump from a LUA script (that communicate to the heat pump by using external mbpoll Modbus command).
I used, because yeasterday I wrote a small plugin for it, starting from your.
Many thanks for the idea.
I invite you to
* add your plugin to https://www.domoticz.com/wiki/Hardware (in the bottom part I added a section for heat pumps)
* add it to the plugin list https://www.domoticz.com/wiki/Plugins
* fork, modify and pull-request the following projects, to let your plugin being installed easily:
- https://github.com/ycahome/pp-manager
- https://github.com/stas-demydiuk/domoti ... ns-manager

[Sateetje]

I changed the code from minimalmodbus to pymodbus because it lacked TCP. Now it's possible to use a ZLAN (or other controller) RTU-over-TCP controller.

[bonebuster]

HI

I have this issue

Error: saisonspr: (SPRSUN) failed to load 'plugin.py', Python Path used was '/home/piwifi/domoticz/plugins/sprsun/:/usr/lib/python39.zip:/usr/lib/python3.9:/usr/lib/python3.9/lib-dynload:/usr/local/lib/python3.9/dist-packages:/usr/lib/python3/dist-packages:/usr/lib/python3.9/dist-packages'.
2023-12-21 16:56:26.366 Error: saisonspr: Traceback (most recent call last):
2023-12-21 16:56:26.366 Error: saisonspr: File "/home/piwifi/domoticz/plugins/sprsun/plugin.py", line 41, in <module>
2023-12-21 16:56:26.366 Error: saisonspr: import pymodbus.client as ModbusClient #tested with 3.6.2
2023-12-21 16:56:26.366 Error: saisonspr: ModuleNotFoundError: No module named 'pymodbus'

with pymodbus

pip install pymodbus
Defaulting to user installation because normal site-packages is not writeable
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Requirement already satisfied: pymodbus in ./.local/lib/python3.9/site-packages (3.6.2)

pymodbus is not at the good place ?

[waltervl]

See https://www.domoticz.com/wiki/Using_Pyt ... ules_Fails

[WBeulink]

Plugin installed OK. Got a great number of devices in Domoticz. But no real data in them.
Anyone any idea about correct connecting to an Elfin EW-11?
Thats the device connected to the SPRSUN and connected to 'my home WiFi and sending data to SPRSUN.
Data that shows up OK in the app of SPRSUN.

The EW-11 is on IP 192.168.2.171 and lives on port 4196

Error in DomoLog:
2024-01-22 13:58:33.446 SPRSUN-Modbus: Unexpected err=AttributeError("'ModbusIOException' object has no attribute 'registers'"), type(err)=<class 'AttributeError'>

[WBeulink]

Plugin is working now. Via serial.
But there is a serious problem.
The docker Domoticz container is growing in size very fast.
Only when I activate the plugin in hardware.
In a few hours the SD is full and everything stops working on my RPi.

[WBeulink]

Problem with disk-usage growing fast is solved with upgrade to Domoticz 2024-4
So it wasn't a problem of the plugin!!
Willem

[WBeulink]

Still waiting for someone who knows how to configure an EW11a correct so I can use TCP instead of serial.
Willem

[Sateetje]

Plugin installed OK. Got a great number of devices in Domoticz. But no real data in them.
Anyone any idea about correct connecting to an Elfin EW-11?
Thats the device connected to the SPRSUN and connected to 'my home WiFi and sending data to SPRSUN.
Data that shows up OK in the app of SPRSUN.

The EW-11 is on IP 192.168.2.171 and lives on port 4196

Error in DomoLog:
2024-01-22 13:58:33.446 SPRSUN-Modbus: Unexpected err=AttributeError("'ModbusIOException' object has no attribute 'registers'"), type(err)=<class 'AttributeError'>

That is the controller which is shipped with the HP, I don't think it's an "open" controller. I used a ZLAN controller (AliExpress)

After connecting the ZLAN, the app won't work anymore. Because it is in place of.

[Sateetje]

Still waiting for someone who knows how to configure an EW11a correct so I can use TCP instead of serial.
Willem

Better buy a ZLAN 5134D: https://nl.aliexpress.com/item/1005002125208614.html (new version with Adapter)

Serial settings: 19200-8-N-1 (no flow control)
Network settings: Mode = TCP Server
Multi-Master settings: Protocol = None and Multi-Master = Disable

[SASCHA]

Can I also use the plugin for the SPRSUN CGK-040V3L-B model?

Together with the Zlan 7110m?
https://a.aliexpress.com/_EI8cH21

Thanks for your answer and it's great that you have a plugin like this!

Sascha

[Sateetje]

Your sprsun has modbus and you can use the app? If yes, is should work.

[ronzelver]

Plugin installed OK. Got a great number of devices in Domoticz. But no real data in them.
Anyone any idea about correct connecting to an Elfin EW-11?
Thats the device connected to the SPRSUN and connected to 'my home WiFi and sending data to SPRSUN.
Data that shows up OK in the app of SPRSUN.

The EW-11 is on IP 192.168.2.171 and lives on port 4196

Error in DomoLog:
2024-01-22 13:58:33.446 SPRSUN-Modbus: Unexpected err=AttributeError("'ModbusIOException' object has no attribute 'registers'"), type(err)=<class 'AttributeError'>

That is the controller which is shipped with the HP, I don't think it's an "open" controller. I used a ZLAN controller (AliExpress)

After connecting the ZLAN, the app won't work anymore. Because it is in place of.

I have installed a SPRSUN CGK-030V3L-B together with the EW11 modbus module. This module is quite universal as it allows multiple communication services to run at the same time (e.g. TCP/UDP Server, MQQT, etc.). I have configured the TCP server which is routed to the UART (modbus), but I still get the same error. Meanwhile I also have a ZLAN-5143D which I'm going to test. However in the serial configuration of the EW11 I can see that the communication is configured as 19200-8-2-N. I assume the same serial settings need to be applied to the ZLAN?!

[HB3340]

Bei welchem Register kann man den aktuellen Setpoint abfragen, der auf der Carel Steuerung am Bildschirm angezeigt wird?

[paddyp]

Does anyone know the original settings for the ew11? I have one I used for solar inverter but the have tried various port, protocol, baud rate, stop bits etc. don't seem to work.

[Sateetje]

Plugin installed OK. Got a great number of devices in Domoticz. But no real data in them.
Anyone any idea about correct connecting to an Elfin EW-11?
Thats the device connected to the SPRSUN and connected to 'my home WiFi and sending data to SPRSUN.
Data that shows up OK in the app of SPRSUN.

The EW-11 is on IP 192.168.2.171 and lives on port 4196

Error in DomoLog:
2024-01-22 13:58:33.446 SPRSUN-Modbus: Unexpected err=AttributeError("'ModbusIOException' object has no attribute 'registers'"), type(err)=<class 'AttributeError'>

That is the controller which is shipped with the HP, I don't think it's an "open" controller. I used a ZLAN controller (AliExpress)

After connecting the ZLAN, the app won't work anymore. Because it is in place of.

I have installed a SPRSUN CGK-030V3L-B together with the EW11 modbus module. This module is quite universal as it allows multiple communication services to run at the same time (e.g. TCP/UDP Server, MQQT, etc.). I have configured the TCP server which is routed to the UART (modbus), but I still get the same error. Meanwhile I also have a ZLAN-5143D which I'm going to test. However in the serial configuration of the EW11 I can see that the communication is configured as 19200-8-2-N. I assume the same serial settings need to be applied to the ZLAN?!

My settings in the ZLAN: 19200-8-1-N without flowcontrol