mellis
Member
I'm working on a project using a pair of 1756-L62 processors using RSLogix5000 ver 18.02 and FTViewSE 6.00 standalone. The odd thing that is happening is that when I create a tag in the PLC and then later try to delete it, I get this message:
Failed to delete tag "Test".
Tag is actively being read by one or more clients.
The problem is, it shouldn't be. The tag was never used on an RSView screen. What "client" is actively reading it is a mystery. If I create a tag online, and then immediately delete it, it usually works. However, if I leave it for a few hours, it's very likely to be locked down.
Something I noticed while I have FTView Studio open on the same computer is every time I create a tag online, the status window in Studio gets notified. Hmm, makes you wonder.
The workaround I have used so far is to mark tags for deletion by changing their description to delete. Then periodically, I reboot my pc without running FTView and pull the network connection between the PLC and the plant network. (I use a different connection for my pc) After about 90 seconds, I can delete the tags.
Now, I do have a machine running FTTransaction Manager too. And it also reads tags in the PLC, but not the ones I'm trying to delete.
I would like to be able to trace this down to exactly what is "actively reading" my tags, and be able to identify what application is responsible. But I haven't found anyway to access this data. Factory Talk knows it, I just don't know how to get it to share that info with me.
Failed to delete tag "Test".
Tag is actively being read by one or more clients.
The problem is, it shouldn't be. The tag was never used on an RSView screen. What "client" is actively reading it is a mystery. If I create a tag online, and then immediately delete it, it usually works. However, if I leave it for a few hours, it's very likely to be locked down.
Something I noticed while I have FTView Studio open on the same computer is every time I create a tag online, the status window in Studio gets notified. Hmm, makes you wonder.
The workaround I have used so far is to mark tags for deletion by changing their description to delete. Then periodically, I reboot my pc without running FTView and pull the network connection between the PLC and the plant network. (I use a different connection for my pc) After about 90 seconds, I can delete the tags.
Now, I do have a machine running FTTransaction Manager too. And it also reads tags in the PLC, but not the ones I'm trying to delete.
I would like to be able to trace this down to exactly what is "actively reading" my tags, and be able to identify what application is responsible. But I haven't found anyway to access this data. Factory Talk knows it, I just don't know how to get it to share that info with me.