02 illegal Data Address from Modbus Slave Example
Posted: Wed Jan 25, 2023 3:54 am
I'm testing Modubs RTU example.
Whenever I tried to read Input Register value.
I can see 02 Illegal Data Address.
I'm using Modbus Poll window program to check Modbus communication.
other functions are working well such as Coils, Discrete Input, Holding Registers.
I use code from example here:
https://github.com/espressif/esp-idf/bl ... in/slave.c
Whenever I tried to read Input Register value.
I can see 02 Illegal Data Address.
I'm using Modbus Poll window program to check Modbus communication.
other functions are working well such as Coils, Discrete Input, Holding Registers.
I use code from example here:
https://github.com/espressif/esp-idf/bl ... in/slave.c