AB SLC 504 Major Error Halt Bit

I’m using the AB UA server and trying to read the Major Error Halt bit S:1/13. The tag reports a not connected data quality but all other tags from the PLC are good. Also, the location doesn’t appear in the quick client. However the location is legitimate and can be read properly using an old Kepware DA server.

Thanks for the help

Try S2:1/13

All status is in data file 2 in the SLC, MicroLogix and PLC-5 processors. Even though some drivers may allow dropping the 2, the Ignition A-B driver requires it.

Thanks for the help