Introduction - Siemens SIMATIC S7-1200 Safety Programming Manualline

1 Introduction

Introduction
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The new controller generation SIMATIC S7-1200 and S7-1500 has an up-to-date
system architecture and, together with TIA Portal, offers new and efficient
programming and configuration options.
If the programming is sloppy, the many options provided by STEP 7 can also
produce negative results:

CPU stops

Long compilation processes

Additional, comprehensive acceptance testing
This document provides you with many recommendations and notes for the optimal
configuration and programming of S7-1200/1500 controllers. This helps you create
standardized and optimal programming of your automation solutions.
The examples described in this document can be universally used on the S7-1200
and S7-1500 controllers.
Advantages
Following the recommendations given in this document provides you with many
advantages:

Reusability of program parts

Easier acceptance (code review, error detection and correction)

More flexibility in terms of program changes

Reduction of programming errors

Increased plant availability by avoiding CPU stops

Easier readability for third parties

Reduced runtime of the safety program
Note Not all the recommendations provided in this document can be applied at the
same time. In these cases, it is up to you as the user to decide on the
prioritization of the recommendations (e.g., standardization or runtime
optimization of the safety program).
Safety Programming Guideline
Entry ID: 109750255, V1.0, 10/2017
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