Modbus Master Read Resister

bhavikbhansali
Posts: 2
Joined: Fri Jan 12, 2018 1:48 pm

Modbus Master Read Resister

Postby bhavikbhansali » Sun Sep 13, 2020 6:50 pm

Hello members,

I am new to ESP-IDF and trying to read a float value from a meter using the mb_master example but not able to do it. Can anyone please help me with this task.

Visual Studio Code - ESP-IDF V 4.1

Uart Pin: Rx 16 - Tx 4 - RTS 2

Meter Setting: baud 9600, Stop bit 1, parity none,

Slave Id: 1
freq.JPG
freq.JPG (13.67 KiB) Viewed 73 times
This is the register I want to read. from a resister, we have to subtract 1 value to get the correct response. The response is in the IEEE Float format.

Can Anyone help me where to modify things to read it?

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