Siemens installation manual Overview of the S7-400, Features of the S7-400

Product Overview 1

Overview of the S7-400

The S7-400 is a programmable logic 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

Automation System S7-400	Hardware and Installation	1-1
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