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The functions "IsFirstMastColdCycle" and "IsFirstMastCycle", is True during the first MAST task cycle after a start.
For example, with this small program:
IF IsFirstMastColdCycle() THEN
a := a + 1;
IF IsFirstMastCycle() THEN
b := b + 1;
The value of "a" will be 1 the first time that the M238/M258 starts (ColdStart).
The value of "b" will increments each time that the M238/M258 stops and starts (WarmStart).