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TMU / TMUsec

Function BlockA function block groups an algorithm and a set of private data. It has inputs and outputs. - Up-counting stop watch. TMUsec is identical to TMU except that the parameter is a number of seconds.

Inputs

IN	BOOL	The time counts when this input is TRUE
RST	BOOL	Timer is reset to 0 when this input is TRUE
PT	TIME	Programmed time
PTsec	UDINT	Programmed time. (TMUsec - seconds)

Outputs

Q : BOOL Timer elapsed output signal
ET : TIME Elapsed time

Q	BOOL	Timer elapsed output signal
ET	TIME	Elapsed time
ETsec	UDINT	Elapsed time. (TMU - seconds)

Time diagram

Remarks

The timer counts up when the IN input is TRUE. It stops when the programmed time is elapsed. The timer is reset when the RST input is TRUE. It is not reset when IN is false.

ST Language

(* MyTimer is a declared instance of TMU function block *)

MyTimer (IN, RST, PT);
Q := MyTimer.Q;
ET := MyTimer.ET;

FBD Language

FFLD Language

IL Language:

(* MyTimer is a declared instance of TMU function block *)

Op1: CAL   MyTimer (IN, RST, PT)
     FFLD  MyTimer.Q
     ST   Q
     FFLD  MyTimer.ET
     ST   ET

See also

TMD

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