Uncertain_lastknownvalue

I am connected to a plc but am getting this message for every OPC tag. Anytime a value changes in the plc it doesn’t change in ignition.

What is the problem? I have been connected between the two for weeks without a problem and haven’t changed anything related to the connection.

Have you looked at your gateway’s device status page?

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I did. I was running the plc on an emulator and restarted everything and its working now. I redownloaded the plc program. Maybe that was it…