I’m trying to configure some ControlLogix PLCs in the OPC-UA server. Each time I try to browse, only about 1/3 or less of the program folders appear. For example, if the PLC has program folders named ‘Station 1’ through ‘Station 10’ I’ll see stations 2, 5, 9, and global tags show up in the quick client. When I try to subscribe to a tag in one of these folders I get good values. I just can’t see all the program folders. I see an entry in the console saying ‘[PLCX] Browse request failed due to TIMEOUT’.
So far I’ve tried 6 different PLCs. There is some fancy networking going on between here and there, but there are other computers talking to each of the PLCs via KepServer. I also tried adjusting the browse timeout setting up to 120,000msec, but I still see it waiting about . RSLinx or KepServer OPC servers see all the program folders. A typical PLC may have 15 program folders and about 10,000 to 15,000 tags across the whole project. Any ideas?