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Execution Times With Indirect Addressing1 - Siemens CPU 412-1 Instruction Manual

S7-400; cpu 412 series; cpu 414 series; cpu 416 series; cpu 417 series;.
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Execution Times with Indirect
When using indirect addresses statement consists of two parts:
Part 1: Load the address of the instruction
Part 2: Execute the instruction
In other words, when working with indirect addresses, you must calculate the execution time of an instruction from these two parts.
Calculating the Execution Time
The total execution time is calculated as follows:
+
=
The execution times listed in the chapter entitled "List of Instructions" apply to the execution times of the second part of an instruction, i.e.
for the actual execution of an instruction.
You must then add the time required for loading the address of the instruction to this execution time (see following Table).
S7-400 Instruction List
A5E00267845-01
Addressing1
Time required for loading the address
execution time of the instruction
Total execution time of the instruction
Execution Times with Indirect
Addressing1
19

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