Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 658)

L-force | PLC Designer
PLC Designer Libraries
656 DMS 3.2 EN 02/2011 TD29

Example in FBD:
Example in ST:
TPInst(IN := VarBOOL1, PT:= T#5s);
VarBOOL2 :=TPInst.Q;
TON
Provided by standard.lib.
The function block Timer On Delay implements a turn-on delay..
TON(IN, PT, Q, ET) means:
IN and PT are input variables of the BOOL and TIME types respectively. Q and ET are
output variables of the BOOL and TIME types respectively. If IN is FALSE, Q is FALSE and
ET is 0.
As soon as IN becomes TRUE, the time will begin to be counted in milliseconds in ET
until its value is equal to PT. It will then remain constant.
Q is TRUE when IN is TRUE and ET is equal to PT. Otherwise it is FALSE.
Thus, Q has a rising edge when the time indicated in PT in milliseconds has run out.
Graphic display of TON behavior over time:
Declaration example:
TONInst : TON ;