Free OPC Server

[edda]

Hi All! Do anybody know about any free OPC server that can communicate with Siemens (or Mitubishi) witch is free? Would like to communicate with the OPC Server with Visaul Basic.Net

[JesperMP]

Hi edda. For Siemens you might want to look at Libnodave. It is not OPC but it is free. http://libnodave.sourceforge.net/index.php

[Nathan]

I haven't run across any free OPC Servers. The free projects are usually APIs that are written in C. There are some .NET ones, but I don't know about Siemens or Mitsubishi.

[DanW]

There are numerous free downloads here, but if you read closely, they're all licensed with limited user time. http://www.opcconnect.com/freesrv.php

[Nathan]

Thanks for the link - great info. I've dealt with many on that list and none are free. The DSxP simulator is, but I doubt that's what OP had in mind.