Welcome to AggreGate Community

In standard Modbus Protocol, the following stands true,
Holding registers (Address 40001,40002 etc) = R/W (Function Code use to Read 3)
Input registers (Address 30001,30002 etc) = R (Function Code use to Read 4)

I hope this helps.

Hi,
I am new here, was going through the Documentation provided n website, But this document is not meant for beginners like me.

I am trying to use aggregate for SCADA/HMI.