Ignition Designer:
Ignition gateway:
The ignition gateway can read the data from the opc server , but tag browser show null value in the first picture?
Ignition Designer:
Ignition gateway:
The ignition gateway can read the data from the opc server , but tag browser show null value in the first picture?
Presumably this means KSE hasn't sent a PublishResponse containing values for those tags yet for some reason. In the QC you're just doing a read, not a subscribe, so it's different.
It doesn't look like anything is wrong with your Ignition configuration, so it might be a Kepware issue. If you can turn off security for the connection and get a Wireshark capture we can verify that the Subscription and Monitored Items get created but no values are received.
A screenshot is not sufficient. Please post the actual PCAP file, or send it to IA support.
We'll need the PCAP file.
Make sure you start the capture and then edit/save the connection once you are recording so that the Subscription and Monitored Item creation is captured.
pacp.rar (2.4 MB)
The file size is too big, so I had compress it. 7Z or WinRAR can uncompress it.
This capture only contains traffic for an existing connection, not a new one that includes subscription and item creation by edit/saving in Ignition.
It doesn't contain any PublishResponses with data change notifications, but that doesn't mean anything because they aren't immediately following the subscription and items being created.