STEP 5 Operations S5-115F Manual
OR-before-AND operation
Q 3.0
&
1
1
LAD
Circuit Diagram
STL CSF
Example
Output Q 3.0 is ”1” when both OR conditions have been
satisfied.
Output Q 3.0 is ”0” when at least one OR condition has
not been satisfied.
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A(
O I 1.4
O I 1.5
)
A(
O I 2.0
O I 2.1
)
= Q 3.0
I 1.5
Q 3.0
I 2.1I 2.0
I 1.4
I 1.4
I 1.5
I 2.0
I 2.1 Q 3.0
I 2.0
I 2.1I 1.5
I 1.4
Scan for signal state ”0”
Q 3.0
LAD
Circuit Diagram
STL CSF
A I 1.5
AN I 1.6
= Q 3.0
Example
Output Q 3.0 is ”1” only when input I 1.5 is ”1” (normally
open contact activated) and input I 1.6 is ”0” (normally
closed contact not activated).
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Q 3.0
I 1.6
I 1.5
&
I 1.5
I 1.6 Q 3.0
I 1.6I 1.5
3-6
EWA 4NEB 811 6149-02
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