Thanks for all the help I really appreciate it. I have been trying to setup this environment to teach myself a bit about modbus and also explore and learn about the capabilities of OpenPLC and MyOpenLab.
unfortunately MyOpenLab doesn’t have any modbus tcp examples at present and the rtu examples are for MyOpenLab as a master for slave devices from what I can see. I will have to give it a bit more research and thought as to how to proceed. It also seemed like it would be quite a nice flexible solution being able to put the MyOpenLab front end onto OpenPLC. I have read somewhere on one of the MyOpenLab forums that somebody has written a modbus tcp interface for MyOpenLab so I will try see if I can find that for now. Thanks again for the help you have been very responsive. Steve