When we make sufficient changes to the PLC project, it will prompt us to restart the OPC UA server. When this happens, the Ignition status page will show connected to the PLC, but the tags will show a value source error. This only seems remedied by using the “Refresh Browse” button on the device page. If left untouched, it seems to stay like that for awhile.
Any ideas on if this is a bug or a settings issue? Nothing jumped out at me in the device settings as prompting a refresh browse regularly or automatically.
Unfortunately there's nothing in the library or S7 enhanced protocol, that we know about, that can be used as an indicator that the program has changed in such a way that a rebrowse is needed. When we asked the vendor about it they indicated it was not possible.
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Oh damn, that sucks. So basically best practice is to just inform developers to run a refresh after downloading?
Yeah AFAIK. I'm not sure if you can get away with only doing it when you add or modify tags/UDTs needed by Ignition, or if it's always necessary.
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