Siemens SIMATIC S5-100U System Manual page 178

STEP 5 Operations
Pulse
Example:
Output Q 1.0 is set when the signal state at input I 0.0 changes from "0" to "1".
However, the output should not remain set longer than 5 s.
Timing Diagram
Signal states
1
0
1
0
5
STL
A I 0.0
L KT 500.0
SP T 1
I 0.0
NOP 0
KT 500.0
NOP 0
NOP 0
A T 1
= Q 1.0
Note
The time tolerance is equivalent to the time base. Always use the smallest time base
possible.
8-20
I 0.0
Q 1.0
Time in s
CSF
T 1
1
TV BI
DE
R Q Q 1.0
Circuit Diagram
I 0.0
T 1
Time relay with transitional
T 1:
NO contact
LAD
T 1
I 0.0
1
KT 500.0 TV BI
DE
R Q
EWA 4NEB 812 6120-02b
S5-100U
Q 1.0
Q 1.0