Siemens SIMATIC ET 200AL System Manual page 5

Preface
Purpose of the documentation
This documentation provides you with important information on how to configure, install,
wire and commission the SIMATIC ET 200AL distributed I/O system.
Changes compared to previous version
This manual contains the following changes compared to the previous version:
• Update of the section Safety-related shutdown of ET200AL standard modules (Page 110)
• Additions to the fail-safe I/O module
Basic knowledge required
A basic knowledge of automation technology is required to understand the documentation.
Validity of the documentation
This documentation is valid for the SIMATIC ET 200AL distributed I/O system.
Conventions
Please observe notes labeled as follows:
Note
A note contains important information on the product described in the documentation and
on the handling of the product to which particular attention should be paid.
Distributed I/O system
System Manual, 08/2021, A5E31861578-AJ
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