Response is 2 bytes NULL \x00

rogersia / Solis-4G

Python project to Read Solis-4G inverter over RS485

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Response is 2 bytes NULL \x00 #3

Closed NibblyPig closed 3 years ago

NibblyPig commented 3 years ago

Hello,

I've tried this code, but it fails as my inverter is just returning a 2 byte \x00 response.

Would you happen to have any idea what this might signify?

NibblyPig commented 3 years ago

Resolved after improving the earthing and switching the + / - wires.

With defective earth, no data was received the correct +/- wiring, and \x00 was received with the incorrect +/- wiring leading me to think the incorrect way was the correct way but I wasn't sending the right modbus commands.