Siemens SIMATIC S5 Manual page 118

STEP 5 Operations
On-delay
Example:
Output Q 4.2 is set 9 sec. after input I 3.5. It remains set as long as the input is "1".
Timing Diagram
Signal states
1
0
1
0
9
STL
A I 3.5
L KT 9.2
SR T 3
NOP 0
*
NOP 0
*
NOP 0
*
A T 3
= Q 4.2
* NOP 0 is required if the program is to be represented in LAD or CSF in the PG 635, PG 670, PG 675, PG 685, PG 695 or
PG 750 programmers. NOP 0 operations are automatically assigned when programming in LAD and CSF.
Note
The time value "9 sec." will be slightly inaccurate if you load the timer with the
statement "L KT 900.0".
3-22
I 3.5
Q 4.2
Time
in sec.
9
CSF
T 3
T 0
I 3.5
KT 9.2
TV BI
DE
R Q Q 4.2
S5-115F Manual
Circuit Diagram
I 3.5
T 3
LAD
T 3
I 3.5
T 0
KT 9.2 TV BI
DE
Q 4.2
R Q
EWA 4NEB 811 6149-02
Q 4.2