Attention

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

TP

Pulse timer. Generates a pulse of duration PT on the rising edge of input IN.

IEC 61131-3	Section 2.5.2.3.3
Support	Not yet supported

Inputs

Name	Type	Description
IN	BOOL	Trigger input
PT	TIME	Pulse duration

Outputs

Name	Type	Description
Q	BOOL	Pulse output (TRUE during pulse)
ET	TIME	Elapsed time

Behavior

When IN transitions from FALSE to TRUE (rising edge), the output Q becomes TRUE and the elapsed time ET begins counting from T#0s. The output Q remains TRUE until ET reaches the preset time PT, at which point Q becomes FALSE. Changes to IN during the pulse have no effect; the pulse always runs for the full duration PT.

Example

VAR
  pulse1 : TP;
  trigger : BOOL;
  output : BOOL;
END_VAR

pulse1(IN := trigger, PT := T#1s);
output := pulse1.Q;

See Also

• TON — on-delay timer

• TOF — off-delay timer