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3 function elements – Siemens Simatic S7-400 User Manual

Page 432

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CPUs for M7-400

11-4

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

11.3

Function Elements

Introduction

In this section you will become familiar with the individual function elements of the
CPU 486-3 and CPU 488-3. You require the information here to be able to respond
to displays, start up, and operate an M7-400 automation computer and handle
further components (for example, memory cards, expansions).

In addition, you will find information on the watchdog, the BIOS setup and the
address assignments and interrupt assignments.

General View

Figure 11-1 shows the front and rear view of the CPU 486-3 and CPU 488-3
without covering flap. The positions of the indicators, operator controls, and other
elements required for operation can be seen from this figure.

Front view

Rear view

1 = Receptacle for memory card
2 = Status and fault LEDs
3 = Mode selector switch
4 = Submodule receptacle for

interface submodules

5 = External battery supply
6 = MPI

7 = Expansion socket
8 = Cover for memory submodule

receptacle

2 x DRAM

9 = Dongle interface

(in preparation)

1

2

3

4

4

6

5

7

8

9

Figure 11-1

Front and Rear View of a CPU 486-3 and CPU 488-3 without Covering Flap

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