OttoBot
Member
Hello all,
I have what has become a complex problem, with what I'm hoping is a simple answer. I am using FactoryTalk Linx Gateway set up as an OPC server. The client (in this case an HMI) polls the gateway using asynchronous comms to get the tag values.
I am able to read hundreds, if not thousands, of tags live from this server right now. However, I renamed a program in the PLC and then added some additional tag that were program scoped.
The old program name (Program:Old_ProgramName) and original program scoped tags within that program are visible and can be read and written to, but the new program name shows a folder with no tags under it (Program:New_ProgramName). The strange thing is, Old_ProgramName doesn't exist anymore, so I don't understand how LG is still serving those tags via the wrong program folder.
I have tried restarting the OPC clients, toggling the external access in the PLC program scoped tags to none and back to read/write, unscheduling and rescheduling the program in the PLC. Unfortunately, I've done every kind of restart I can think of except for restarting the Linx Gateway, which I can't do because we are running a live process, and toggling the mode of the PLC, which of course I can't do for the same reason.
On top of that, we are configured with redundant Linx Gateways, and the primary has lost its connection to the secondary, but that is a different issue that preceded this most recent one.
Anyone have any ideas about this one? Rockwell basically told me to restart the Linx Gateway service on the hosting server.
I have what has become a complex problem, with what I'm hoping is a simple answer. I am using FactoryTalk Linx Gateway set up as an OPC server. The client (in this case an HMI) polls the gateway using asynchronous comms to get the tag values.
I am able to read hundreds, if not thousands, of tags live from this server right now. However, I renamed a program in the PLC and then added some additional tag that were program scoped.
The old program name (Program:Old_ProgramName) and original program scoped tags within that program are visible and can be read and written to, but the new program name shows a folder with no tags under it (Program:New_ProgramName). The strange thing is, Old_ProgramName doesn't exist anymore, so I don't understand how LG is still serving those tags via the wrong program folder.
I have tried restarting the OPC clients, toggling the external access in the PLC program scoped tags to none and back to read/write, unscheduling and rescheduling the program in the PLC. Unfortunately, I've done every kind of restart I can think of except for restarting the Linx Gateway, which I can't do because we are running a live process, and toggling the mode of the PLC, which of course I can't do for the same reason.
On top of that, we are configured with redundant Linx Gateways, and the primary has lost its connection to the secondary, but that is a different issue that preceded this most recent one.
Anyone have any ideas about this one? Rockwell basically told me to restart the Linx Gateway service on the hosting server.
