02 illegal Data Address from Modbus Slave Example

[chikichaka]

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

[ESP_alisitsyn]

@chikichaka ,

The slave configures two register areas for input registers:

Reg input area 1: 0, length: 8
Reg input area 2: 158, length: 8

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Screenshot at 2023-01-27 13-18-33.png (44.97 KiB) Viewed 3147 times

If you configure Modbus poll to read these registers you will get the data correctly.

Screenshot at 2023-01-27 13-26-29.png (49.52 KiB) Viewed 3154 times