connection problem on domoticz 2023.1 15378

[anno006]

I have 2 sdm630. It did work fine last month. But now i can't get it working anymore, i stil get this error:
2023-07-07 23:28:48.093 Error: SDM630.2: Call to function 'onHeartbeat' failed, exception details:
2023-07-07 23:28:48.093 Error: SDM630.2: Traceback (most recent call last):
2023-07-07 23:28:48.093 Error: SDM630.2: File "/home/pi/domoticz/plugins/SDM630-Modbus/plugin.py", line 554, in onHeartbeat
2023-07-07 23:28:48.093 Error: SDM630.2: _plugin.onHeartbeat()
2023-07-07 23:28:48.093 Error: SDM630.2: File "/home/pi/domoticz/plugins/SDM630-Modbus/plugin.py", line 448, in onHeartbeat
2023-07-07 23:28:48.093 Error: SDM630.2: Domoticz.Log('Voltage L1: {0:.3f} V'.format(Volts_L1))
2023-07-07 23:28:48.093 Error: SDM630.2: UnboundLocalError: local variable 'Volts_L1' referenced before assignment

When the one is working the other won't and around, when the second is working the first is not.

[Roel6]

I have more or less the same problem. What am I doing wrong?

2023-08-31 19:45:39.093 Error: MODBUS: Call to function 'onHeartbeat' failed, exception details:
2023-08-31 19:45:39.095 Error: MODBUS: Traceback (most recent call last):
2023-08-31 19:45:39.095 Error: MODBUS: File "/home/pi/domoticz/plugins/SDM630-Modbus/plugin.py", line 552, in onHeartbeat
2023-08-31 19:45:39.095 Error: MODBUS: _plugin.onHeartbeat()
2023-08-31 19:45:39.095 Error: MODBUS: File "/home/pi/domoticz/plugins/SDM630-Modbus/plugin.py", line 265, in onHeartbeat
2023-08-31 19:45:39.095 Error: MODBUS: Volts_L1 = self.rs485.read_float(0, functioncode=4, numberOfRegisters=2)
2023-08-31 19:45:39.095 Error: MODBUS: File "/home/pi/domoticz/plugins/SDM630-Modbus/minimalmodbus.py", line 392, in read_float
2023-08-31 19:45:39.095 Error: MODBUS: return self._genericCommand(functioncode, registeraddress, numberOfRegisters=numberOfRegisters, payloadformat='float')
2023-08-31 19:45:39.095 Error: MODBUS: File "/home/pi/domoticz/plugins/SDM630-Modbus/minimalmodbus.py", line 697, in _genericCommand
2023-08-31 19:45:39.096 Error: MODBUS: payloadFromSlave = self._performCommand(functioncode, payloadToSlave)
2023-08-31 19:45:39.096 Error: MODBUS: File "/home/pi/domoticz/plugins/SDM630-Modbus/minimalmodbus.py", line 798, in _performCommand
2023-08-31 19:45:39.096 Error: MODBUS: payloadFromSlave = _extractPayload(response, self.address, self.mode, functioncode)
2023-08-31 19:45:39.096 Error: MODBUS: File "/home/pi/domoticz/plugins/SDM630-Modbus/minimalmodbus.py", line 1075, in _extractPayload
2023-08-31 19:45:39.096 Error: MODBUS: raise ValueError(text)
2023-08-31 19:45:39.096 Error: MODBUS: ValueError: Checksum error in rtu mode: '\x1di' instead of ':]' . The response is: '\x7fßÿÿû\x1di' (plain response: '\x7fßÿÿû\x1di')

DOMOTICZ 2023.2
Python 3.9.2
minimalmodbus.py installed
running on raspberry pi 3b+
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye

Thanks in advance

[porczek]

Hi, info from Domoticz wiki page:
WARNING nov 2021: Raspberry Pi OS based on Bullseye is giving issues with Python plugins!! Please do not upgrade or use this version for fresh install (instead use Raspberry Pi OS Legacy, based on Buster)

[gizmocuz]

Tested with latest Domoticz (beta) and works correctly. Way to many devices 😁

[Roel6]

still the same problems with the present DOMOTICZ beta version. aaahhhhhh
I also updated python but no results.
What am I doing wrong

[gizmocuz]

You can use my fork, this is working with the latest beta

https://github.com/gizmocuz/SDM630-Modbus

Hope to have to additional meters here this week to verify this.

[Roel6]

Thanks,
I think it is a big step ahead.
I now have this warning " **** Connection problem ****" only and all parameters are 0.

[gizmocuz]

Your modbus address should not be 0, as well as the other settings, better check and correct them
Make sure you are on one of the later beta versions

[Roel6]

DOMOTICZ 2023.2 (build 15658)
Python 3.9.2 showing in DOMOTICZ but upgraded to 3.9.15
minimalmodbus.py installed
running on raspberry pi 3b+
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 11 (bullseye)

It was working in previous version of Raspbian GNU/Linux and a older version of domoticz .
I had to upgrade LINUX to use a newer version of domoticz and then the trouble started.
I have several SDM630 installed
reading interval 2 minutes
baud-rate 9600 on all SDM630 devices and domoticz

For testing I now only use device with ID 4
All other devices (puls and smartmeter) devices are working.

Surgestion?

[Roel6]

I installed phyton 3.11.4 (was 3.9.2) and now it is working again
!
!

[Roel6]

https://stackoverflow.com/questions/76942052/raspberry-pi-cant-install-python-3-11

[gizmocuz]

Tested with 3 meters and working!

[Roel6]

Tested with 5 SDM630 V2 (38k4 and 2 min intervals) and it is working.
The raspberry PI 3B is having a hard time

Thanks for the help

[gizmocuz]

Great to hear! What do you mean with 'The raspberry PI 3B is having a hard time' ?
I think we should rewrite this plugin... instead of the option to provide 1 modbus id, we should let the user enter a comma separate list
This way the plugin can scan all id's instead of doing a trial and error and timeout/reconnect stuff
Anyone want to be willing to give this a try?

[Roel6]

DOMOTICZ WWW server is getting slow due to high CPU use (80% or more)
I like the separate modbus ID approach so that each SDM630 gets a different name.