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Modbus STM32F103 as slave and Simply Modbus Master as software

jissa
Associate II

Hi,

I'm stuck on the slave responding to read holding and input register. I've followed the "Controllers Tech" page. Can anybody help me to solve the problem?

The issue is not getting exact responses. STM32 slave receives data correctly from the software but does not send the same value with incorrect CRC.

Here, I'll attach my code and proteus.

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