Special functions are used to access a specific value that is unique to a point. The value of the point can then be tested or assigned to other points. Since special functions are maintained by the system, they cannot be manually commanded to a different value. For information on the order in which special functions are evaluated, see the Order of Precedence.

Special functions cannot be used over the network.

PPCL supports the following special functions:

  • Alarm priority (ALMPRI)
  • Totalized value (TOTAL)