Attention

IronPLC can only run very simple programs. The steps described are accurate but many language features are not yet supported.

Function Blocks

Standard function blocks defined by IEC 61131-3.

Timers

Function Block	Description	Status
TON	On-delay timer	Not yet supported
TOF	Off-delay timer	Not yet supported
TP	Pulse timer	Not yet supported

Counters

Function Block	Description	Status
CTU	Count up	Not yet supported
CTD	Count down	Not yet supported
CTUD	Count up/down	Not yet supported

Edge Detection

Function Block	Description	Status
R_TRIG	Rising edge detection	Not yet supported
F_TRIG	Falling edge detection	Not yet supported

Bistable

Function Block	Description	Status
SR	Set-dominant flip-flop	Not yet supported
RS	Reset-dominant flip-flop	Not yet supported