Siemens SIMATIC S5 Manual page 120

STEP 5 Operations
Off-delay
Example:
When input I 3.4 is reset, output Q 4.4 is set to zero after a certain delay (t). The value in FW 13
specifies the delay time.
Timing Diagram
Signal states
1
0
1
0
STL
A I 3.4
L FW 13
SF T 5
NOP 0
*
NOP 0
*
NOP 0
*
A T 5
= Q 4.4
* NOP 0 is required if the program is to be represented in LAD or CSF on 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.
3-24
t t
CSF
T 5
0 T
I 3.4
FW 13
TV BI
DE
R Q
I 3.4
Q 4.4
Time
in sec.
I 3.4
FW 13
Q 4.4
S5-115F Manual
Circuit Diagram
I 3.4
T 5
Q 4.4
LAD
T 5
0 T
TV BI
DE
Q 4.4
R Q
EWA 4NEB 811 6149-02