I’m trying to connect to data from a remote machine running Wonderware system platform using OPC-DA. I’m able to connect to the da server, but I’m unable to browse tags except the system $sys tags. If I use the Matrikon OPC client I can type in the tag path and get good quality data, but if I try it in Ignition, I get nulls and the unknown tag quality icon.
I am getting the same the problem as above topic. I have created one OPC connection and created Topic name on RSLinx Classic gateway. the PLC is Emulated PLC. So when I am getting problem of tag values are null and Unknown. the OPC Connection is Connected but still I am getting the tag quality Null, Unknown on Ignition QuickClient.
Also on the Logs page, i am getting error i.e COMSubscription - [Scanclass ‘Default[default]’] Failed to add 156 items to the subscription- error codes were returned from the OPC server. To see the codes, change the log level to debug and re-initialize the items.
Awaiting your responses.
Thanks