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ljean / modbus-tk

Create Modbus app easily with Python
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Communication fault tolerance mechanism #127

Closed Junkiwang closed 4 years ago

Junkiwang commented 4 years ago

How to achieve fault tolerance when modbus_tk is applied to be a host? For example, the reply data is allowed to be wrong twice when querying the slave.

ljean commented 4 years ago

Can you please give more details about what you want to do? what do you mean by "the data is allowed to be wrong" ?

Junkiwang commented 4 years ago

The normal request and response are as follows： host request: 01 03 00 01 00 02 95 CB slave response: 01 03 04 41 A1 F3 83 BA BC If slave response was error, the host can let the error happen 2 times, until the third time error occurs, the host can stop request. How to achieve it by use modbus_tk?

ljean commented 4 years ago

I think you can handle this in your app by checking exception of the execute function. I hope it helps

Junkiwang commented 4 years ago

Thank you, I have solved it.