Preface - Siemens Simatic S7-1500 Function Manual

Preface

Purpose of the documentation
The controller offers various options for program execution with different run priorities.
Cyclic-driven and time-driven program execution have the largest share. The response times
of a controller are therefore significantly determined by the processing cycles.
There is also the possibility of event-driven program execution. The event-driven program
execution is normally limited to a few selected events.
This manual provides information on the following topics:
● Types of program execution
● Run priorities
● Cycle and response times, and the influences to which they are subject
● Configuration options for the optimization of your user program
Basic knowledge required
The following knowledge is required in order to understand the documentation:
● General knowledge of automation technology
● Knowledge of the SIMATIC industrial automation system
● Knowledge of the use of Windows-based computers
● Knowledge of working with STEP 7
Conventions
STEP 7: In this documentation, "STEP 7" is used as a synonym for all versions of the
configuration and programming software "STEP 7 (TIA Portal)".
Please also observe notes marked as follows:
Note
A note contains important information on the product described in the documentation, on the
handling of the product or on the section of the documentation to which particular attention
should be paid.
Cycle and response times
Function Manual, 10/2018, A5E03461504-AD
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