Function Block - Pulse timer.
IN : BOOL
Timer command
PT : TIME Programmed time
RST : BOOL Reset (TPR only)
Q : BOOL
Timer elapsed output
signal
ET :
TIME Elapsed
time
The timer starts on a rising pulse of IN input. It stops when the elapsed time is equal to the programmed time. A falling pulse of IN input resets the timer to 0, only if the programmed time is elapsed. All pulses of IN while the timer is running are ignored. The output signal is set to TRUE while the timer is running.
TPR is same as TP but has an extra input for resetting the timer
In LD language, the input rung is the IN command. The output rung is Q the output signal.
(* MyTimer is a declared instance of TP
function block *)
MyTimer (IN, PT);
Q := MyTimer.Q;
ET := MyTimer.ET;
(* MyTimer is a declared instance of TP
function block *)
Op1: CAL MyTimer (IN, PT)
LD MyTimer.Q
ST Q
LD MyTimer.ET
ST ET