Posted 31 Jan 2017 I am trying to learn the logic of a process at my new job. There are tag names that I can't make sense of because they end with _xva, _xvb, _xvu, _xvd, _xvo, _xvc, _zsm, _zsu, _zsc, _zso, _zsd and so on and so forth. I know they are associated with motion, but I need to make better sense of them. There are no descriptors. What do they mean and is there a resource available that I can reference? Share this post Link to post Share on other sites
Posted 31 Jan 2017 Those abbreviations have nothing to do with RSLogix5000, but rather are equipment identifiers from the ISA or ANSI and tend to come from P&IDs. Example _zsc tends to be "Limit Switch Closed Position" and _zso tends to be "Limit Switch Opened Position". Share this post Link to post Share on other sites
