Modbus tcp communication error

[RajatDas2020]

Hi all,
I have encountered a problem while trying to make a communication using Modbus tcp. I have attached a 4Diac IDE screenshot where the complete project is shown. My 4Diac Forte is running on a linux machine (ip: 10.135.114.19) and a IO module (ip: 10.135.114.94) is connected in that same network. I want to write a coil (LED) of that IO device using Modbus. The message I'm getting in Forte is also attached as a screenshot and it's showing that "Connection to Modbus server succeded" but the LED of that IO module is not blinking. Also I'm not getting any error in the ide also. Kindly help me to solve the issue.

N.B: 00017 is the Modbus address for digital ouput of that IO module.

[azoitl]

I must confess I have no clue how our modbus implementation works. But if you are only sending data you may need a CLIENT_1_0.