Installation manual

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S7-400 and M7-400 Programmable Controllers Hardware and Installation

A5E00069481-04

Product Overview

Overview of the S7-400

The S7-400 is a programmable controller. Almost any automation task can be

implemented with a suitable choice of S7-400 components.

S7-400 modules have a block design for swing-mounting in a rack. Expansion

racks are available to extend the system.

In this chapter, we show you the most important components with which you can

assemble an S7-400.

Features of the S7-400

The S7-400 programmable controller combines all the advantages of the previous

system with those of a new system and new software. These are:

• A graded CPU platform

• Upwardly-compatible CPUs

• Enclosed modules of rugged design

• Convenient terminal system for the signal modules

• Compact modules with a high component density

• Optimum communication and networking facilities

• Convenient incorporation of operator interface systems

• Software parameter assignment for all modules

• Extensive choice of slots

• Operation without fans

• Multicomputing in the non-segmented rack