Simultaneous-branch SFC of a batch oven that bakes (15-minute D-qualified action) and cools the chamber jacket (5-minute L-qualified action) concurrently after a heat-up phase. Both branches must complete before the converge bar fires. Exercises the IEC 61131-3 §6.5.4 double-bar simultaneous divergence and time-parameterized action qualifiers.
“Create an SFC that starts heating when a batch is ready, then bakes for 15 minutes and cools for five minutes in parallel, completing when both are done.”