Siemens SIMATIC IM 151/CPU Manual page 144

Instruction List
B.5.2 Example of Register-Indirect, Area-Internal Addressing
Example
A I [AR1, P#34.3]
Step 1
Load the contents of AR1 and increment it by the offset 34.3
Address Is In ...
AR1/AR2 (area-internal)
Step 2
ANDing of the addressed input (the execution time is in Appendix B.6 and the
following chapters).
Total Execution Time
This results in a total execution time of:
Total execution time:
1.7 s
+ 1.6 s
= 3.3 s
B-10
:
:
Typical Execution Time in
Direct Addressing
0.3
:
Execution Time in s
:
1.7
:
s
Indirect Addressing
1.6+
Time for
:
A I
ET 200S Interface Module IM 151/CPU
A5E00058783-01