feat(cfc): storage mode (set/reset) - #1851
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Problem: The IDE exports a storage mode extension on data sinks, `<bmx:StorageMode mode="Set|Reset"/>`, to latch signals that are only present for a short time. The compiler ignored the extension and transpiled such sinks as plain assignments, so the latch behavior was silently lost. Solution: Adapt the model to the exported format and lower a storage sink to a guarded constant store: `IF <input> THEN sink := TRUE; END_IF` for Set, storing `FALSE` for Reset. Nothing is written while the input is FALSE, so a once-set sink keeps its value until the counterpart fires.
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Problem: The IDE exports a storage mode extension on data sinks,
<bmx:StorageMode mode="Set|Reset"/>, to latch signals that are onlypresent for a short time. The compiler ignored the extension and
transpiled such sinks as plain assignments, so the latch behavior was
silently lost.
Solution: Adapt the model to the exported format and lower a storage
sink to a guarded constant store:
IF <input> THEN sink := TRUE; END_IFfor Set, storing
FALSEfor Reset. Nothing is written while the inputis FALSE, so a once-set sink keeps its value until the counterpart
fires.