The more commonly used Digital System Tags are listed below. These are mostly 2-state Discrete type Tags.
The Alarm of a %DAQ tag does not appear in the alarm summary or alarm log. The alarm is for Display purposes only, are self clearing and can not be acknowledged.
%DBAD(tag) - Good /Bad Status of specified tag
%DCOMST(comport number) - Status of specified Communications Port.
%DKRLMODE - Communications Mode or Simulation Mode of Kernel