Witte Software products

Modbus Poll is the very popular Modbus master simulator for test and debug of your slave devices. Supports Modbus RTU/ASCII and Modbus TCP/IP.

Requests from 2 slaves ID's

Quick start guide


Modbus slave is a slave simulator for simulating 32 slave devices/address areas. OLE Automation support for easy interface to your Excel spreadsheet.


WSMBT: Modbus master .NET control for C#, VB and managed C++.
Supports Modbus TCP/IP


WSMBS: Modbus master .NET control for C#, VB and managed C++.
Supports Modbus RTU/ASCII


MBAXP is an easy to use ActiveX control for Excel, Visual Basic, Visual C++, Delphi etc.
Supports Modbus RTU/ASCII and Modbus TCP/IP.