Simplex OPC UA Client/Server SDK for Delphi. The Simplex OPC UA SDK support you in writing Delphi/Pascal OPC UA Clients and Servers.
We are currently using a free trail version of KEP Server for our OPC to communicate with our PLC. We were wondering if anyone knows of any good open source OPC software.
Rob_IGSRob_IGS
closed as off-topic by Undo♦, AstroCB, hichris123, user1864610, CRABOLOMar 1 '15 at 4:15
This question appears to be off-topic. The users who voted to close gave this specific reason:
- 'Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.' – Undo, AstroCB, hichris123, Community, CRABOLO
Kepware Opc Quick Client Download
If this question can be reworded to fit the rules in the help center, please edit the question.2 Answers
Some vendors offer OPC servers for free with their PLCs, but I haven't seen any free OPC servers that supports multiple vendors like KepWare OPC server does. Neither free (unless you count time limited ones), neither open source ones. That saying, the best bet you can get is to get Delphi and make your own OPC servers and clients with free sources found here. I am not aware of free OPC server sources for other languages.
If you don't mind skipping the OPC server and communicating directly with the PLC you should have a look at libnodave.
grimmiggrimmig