Following on from my other post I noticed this while trying to find out why the memory usage was very high. In the OPC status page a test PLC that was been used for training is still showing up here even though it is removed from the device configuration. The probelm with this one is that it was addded by an inexperienced user who seems to have added the entire tag database of the PLC.There are a couple more of them as well but not that many tags were subscribed. How do I remove them form here and do they have any effect on the system. I have attached a screen shot of what I am describing. I tried doing a reinstall and reimporting the backup but this is bringing them back in.