TMU / TMUsecPLCopen motion icon

Function BlockClosedA 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