Automation System S7 - Siemens SIMATIC S7-400 Reference Manual

Preface
Purpose of the Manual
The manual contains reference information on operator actions, descriptions of
functions and technical specifications of the central processing units, power supply
modules and interface modules of the S7-400.
How to configure, assemble and wire these modules (and other) in an S7-400
system is described in the installation manuals for each system.
Required Basic Knowledge
You will need general knowledge of automation to understand this manual.
Target Group
This manual is aimed at people with the required qualifications to commission,
operate and maintain the products described.
Scope of this Manual
The manual applies to the S7-400 automation system.
Changes Since the Previous Version
This manual describes S7 CPUs with firmware version 3.1.
Certification
The SIMATIC S7-400 product range has the following certificates:
• Underwriters Laboratories, Inc.: UL 508 (Industrial Control Equipment)
• Canadian Standards Association: CSA C22.2 Number 142, tested (Process
Control Equipment)
• Factory Mutual Research: Approval Standard Class Number 3611.
You can find details on the certificates and approvals in section 1.1, Standards and
Certificates, of the "Module Specifications" reference manual.
Automation System S7-400 CPU Specifications
A5E00165965-01
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