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Clarification on SunSpec modbus error-handling #235

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jtuemmler opened this issue Oct 11, 2022 · 0 comments
Open

Clarification on SunSpec modbus error-handling #235

jtuemmler opened this issue Oct 11, 2022 · 0 comments

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@jtuemmler
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There is a difference in the modbus error handling when writing unimplemented registers or read-only registers.

In document "Sunspec Information Model Specification 1.9", these errors are just ignored, whereas in "SunSpec Device Information Model Specification 1.1" an exception 2, 3 or 4 must be returned.

Is it ok to implement only the newer behaviour - even for the 1xx models?
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@jtuemmler