Registers being read using minimalmodbus package but not when read using pymodbus

Product support balenaOS
1

Hello
I wanted to inquire about an issue that i am facing on my Revpi. It is connected to a Solis inverter. I am able to read the registers using a python package named “minimalmodbus” but have faced problems when reading the same registers when using the “pymodbus” package(the client written in pymodbus works when used between a laptop and revpi using usb-to-rs485 connector). Also sometimes, the ModBus RTU server written in pymodbus stops working, which can be solved by restarting the Revpi from Balena Dashboard. Also some thirdparty modbus tools also don’t work and just give a “Connection timeout” error.

While my problem is solved with the “minimalmodbus” package, i just wanted to inquire, if some BalenaOS configuration was one of the things, causing the issue.

Best Regards,

2

Hello @Justaus3r thanks for your message!

Could you please share the link to the minimalmodbus package that you mentioned?

Is it possible that you could share more logs of the issues that you had?

Thanks!