Need modbus master program/library for Siemens S7-200

[Gediminas]

Where can I find it ? I would like to avoid writing program myself. I need only basic functions - read/write holding registers.

 

[dchartier]

Hello gediminas;
If you go to the siemens support webpage:


http://www4.ad.siemens.de/WW/llisapi.dll?func=cslib.csinfo&lang=en&objID=4000024

Then search for "S7-200 Tips and Tricks" and download it; amongst many other options, this package contains program utilities for modbus slave communications on the S7-200.

Hope this helps,
Daniel Chartier