Siemens SIMATIC S5-100U, System Manual

Page: 145 / 552

S5-100U Introduction to STEP 5
Further Reduction in the Execution Time in Normal Mode
Logic operations executed in one input byte, output byte, or flag byte require only 2 µ s per logic
operation. Program your control according to example 2.
A I 0.0
5
AN I 1.1
6
ON I 2.3
6
O I 3.5
6
= Q 4.2
8
A F 15.1
5
A F 16.3
6
AN F 17.7
6
= Q 4.5
8
Execution time 56
µ
s
STL
A I 0.0
5
AN I 0.1
2
ON I 0.3
2
O I 0.5
2
= Q 4.2
8
A F 15.1
5
A F 15.3
2
AN F 15.7
2
= Q 4.5
8
Execution time 36 µ s
STL
Time/ µ s Time/ µ s
Approx. 6
µ
s/binary operation Approx. 4
µ
s/binary operation
Example 1: Example 2:
EWA 4NEB 812 6120-02b
7-23