Modbus Integration - Control Over Function Code

Feature Requests
1

Hi All,

I am currently working on a community energy project and trying to integrate the Solis inverter via direct modbus connection RTU, not over TCP.

In discussions with the manufacture it would appear that I need to be sending modbus commands using different modbus function codes not just the standard ones specified in the doc below.

Modbus - Home Assistant (home-assistant.io)

Would some genus be able to update the modbus integration to allow for the specifying of the function code?

Thanks,
Richard.

2

Yes please, got the same issue with some Chinese modbus RTU’s

3

what code do you need to send to modbus rtu?

modbus address

example:

read code function 1 = coil,

    switches:
      - name: switch1
        slave: 1
        address: 128
      - name: switch2
        slave: 1
        address: 129

if you need custom preference, you can use cover and device_class

or maybe you need HMI ( Human Machine Interface ) or SCADA

4

Modbus TCP has Format
Slave ID; Function Code; Adress, num of coils

so function code is a must have

  • name: power
    slave: 1
    Function: 2
    address: 1002
    coils: 5

that is the goal

Data send to ip: 01 02 03 ea 00 05

see About Modbus TCP | Simply Modbus Software