Siemens SIMATIC S5-100U System Manual page 163

S5-100U
OR before AND Operation
Output Q 1.0 is "1" when one of the following conditions
has been satisfied:
• Input I 0.0 is "1".
• Input I 0.1 and either input I 0.2 or I 0.3 is "1".
Output Q 1.0 is "0" when none of the AND conditions has
been satisfied.
STL
O I 0.0
I 0.0
O
A I 0.1
I 0.1
A(
O I 0.2
I 0.2
O I 0.3
)
I 0.3
= Q 1.0
EWA 4NEB 812 6120-02b
Example
CSF
=1
>
&
=1
>
Circuit Diagram
I 0.0 I 0.2
Q 1.0
LAD
I 0.0
I 0.2 I 0.1
I 0.3
Q 1.0
STEP 5 Operations
I 0.3
I 0.1
Q 1.0
8-5