Modbus implementation in HMI display

Dhinakaran

I am working on a Modbus setup where the PLC is the master and the HMI is the slave.
My requirement is to read a float value from the PLC(Master) and write/display it on the HMI(Slave), but i could not see any changes in display which indicates there is no Modbus Communication Between PLC and HMI.I am new to this HMI software.I could not find any tutorial in Official documentaion related to modbus setup like Visual TFT,they given only for LUA script.
Could anyone share a sample project or a simple working example(link) ?

dctechnology

Select modbus slave to change the preset byte order, changing the single precision floating point number to 3412 test

Dhinakaran

dctechnology 发表于 2025-12-1 08:45
Select modbus slave to change the preset byte order, changing the single precision floating point nu ...

Thank you. However, even after the changes, Modbus communication still isn’t working. Is there any tutorial for that?
Can you please help me to fix the issue?