Helpful Modbus register Information


Getting modbus devices to communicate to continuum may require some trial and error.

Product Line

Andover Continuum



Modbus RTU, ModbusRTU

Windows XP

Windows Vista

Windows 7

Windows Server 2003

Windows Server 2008


Manufacturers of modbus devices may have an offset for their register values and addressing these values requires trial an error.


This article was created as a starting point. There are a lot of tools and methods to get values from modbus devices communicating. The document that can be downloaded with the link below discusses some important concepts as well methods for trying to bring values in.

Click here to download