IF_SET

The IF_SET statement is essentially a shortcut for the IF statement, used to check if a given variable is on. In old GPP, it could be used as a generic if statement. In GPP2, it is only used to test the on flag of variables.

IF_SET ( <variable> )          // same as IF(VARSET(<variable>))

    Sequence of execution statements...

END_IF;

Note that use of IF_SET is identical to using the IF statement with the VAR_SET function. The IF_SET / ELSE combination is also supported.

GPP2 will issue a runtime warning if the IF_SET statement is used with a non-modal variable (since this test is mostly useful for modal variables).