Write Value to Modbus TCP/IP

Write Value to Modbus TCP/IP

Hi all,

I am new to zenon and have a projects to zenon as a Gateway. I am trying to read and write value to ABB RIO600. I've been able to read Value from the digital inputs using the right offset, but i am unable to write a value to the RIO600. It is like Zenon unable to send a write command to the RIO600, but i able to read the value of Digital Output on RIO600 if i activate the Digital Output by ModbusPoll or other tools.

i would love to hear any help, thanks in advance