text: <s>[INST] Cannot Delete or Un-Inhibit PowerFlex module in RS5000 RS5000 Version 18 (recently revved up from 17). Three PowerFlex drives were added to ENBT in IO tree and inhbitied online when controller was 17. Controller revved up to 18 and put back in service a couple of weeks ago. Today trying to commission those three drives, but now cannot un-inhibit 2 of the 3 drives. No error codes just Failed to modify properties. Tag is actively being read by one or more clients. Single processor application, running PanelView Pluses, none of which are using any tags from these drives. Tried deleting logic and deleting the modules, but got similiar message (Failed to Delete module. Tag is actively being read by one or more clients.). Tried creating new module with different IP address, checked Inhibit before the last step in creating the module. Created it, but same issue, cannot delete or uninhibit it. Downloaded the application to a spare controller and everthing works fine. Tried going online with a laptop instead of the typical desktop, same issue. At this point , downloading or restarting the processor is not an option as the process runs 24/7. Any ideas? [/INST] Normally, it can be done, unless the object is actively read or write through OPC server / clients, Operator Panels etc...Sometimes these softwares create OPC groups and keep them active also when unused... There are some instances where I've seen a similar problem, it seems the tags are locked by the controller.... only solution I guess is the one you cannot realize right now... make modifications offline and re-download.:smileysad: - fuzzy logic \\n </s>