Siemens SIMATIC S5-90U System Manual page 171

S5-90U/S5-95U
AND Operation
The AND operation scans to see if various conditions are satisfied simultaneously.
Output Q32.5 is "1" when all three inputs are "1".
The output is "0" if at least one input is "0".
The number of scans and the sequence of the logic
statements are optional.
STL
A I 32.0
A I 32.1
A I 32.2
= Q 32.5
OR Operation
The OR operation scans to see if one of two (or more) conditions has been satisfied.
Output Q32.5 is "1" when at least one of the inputs is "1".
Output Q32.5 is "0" when all inputs are "0" simultaneously.
The number of scans and the sequence of their
programming are optional.
STL
O I 32.0
O I 32.1
O I 32.2
= Q 32.5
EWA 4NEB 812 6115-02b
Example
CSF
I32.0
&
I32.1
Q32.5
I32.2
Example
CSF
I32.0
=1
>
I32.1
I32.2 Q32.5
STEP 5 Operations
Circuit Diagram
I32.0
I32.1
I32.2
Q32.5
LAD
I32.1
I32.0 I32.2 Q32.5
Circuit Diagram
I32.0 I32.1 I32.2
Q32.5
LAD
Q32.5
I32.0
I32.1
I32.2
8-3