Siemens Simatic S7-300 Manual de instalación y hardware - Página 19

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Product Overview

Modular Design

In this Chapter

S7-300, Installation and Hardware

EWA 4NEB 710 6078-02a

The S7-300 has a modular design. You can set up your own individual system

by combining components from a comprehensive range of S7-300 modules.

The range of modules includes the following components:

CPUs for various performance ranges

Signal modules for digital and analog input/output(see Module Specifica-

tions Reference Manual)

Function modules for technological functions (see the relevant function

module manual for a description).

CP communication processors (see the communication processor manual

for a description)

Load power supply modules for connecting the S7-300 to 120/230 VAC

power supplies (see Module Specifications Reference Manual)

Interface modules for the interconnection of racks in multi-rack installa-

tions (see Module Specifications Reference Manual)

All of the S7-300 modules are contained in housings protected to IP 20, i.e.

they are encapsulated and can be operated without a fan.

In this chapter, we will introduce you to the most important components that

go to make up an S7-300.

1-1