Today is...
Sunday, August 25, 2019
Welcome to Control.com, the global online
community of automation professionals.
Featured Video...
Featured Video
EtherCAT with CTC’s master lets your multivendor network play well together...
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Writing to a Holding Register Using Modbus Poll Master Software.
Sending 1999 to a temperature indicator that accepts serial values into 40031 register

I want to send 1999 to a temperature indicator that accepts serial values into 40031 register. How can I write into a holding register using Modbus poll master software?

I am using serial communication using RS-485. I am new to this topic, and I am an intern. Anyone willing to help me on this please ping me on pullela515@gmail.com.

Thanks in advance,

Regards,
Yashwanth.

There are so many settings that can cause Modbus RTU to not work. It pays to read a value from a slave before writing a value to a slave.

Can you successfully read the value in (4)0031?