Siemens CPU 312 User Manual

SIMATIC S7-300 CPU 31xC and CPU 31x, Technical Data
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Preface
Guide to the S7-300
documentation
1
Operating and display
elements
2
Communication
3
Memory concept
4
Cycle and reaction times
5
Technical data of CPU 31xC
6
Technical data of CPU 31x
7
Appendix
A
SIMATIC
S7-300
CPU 31xC and CPU 31x, Technical
Data
Manual
01/2006 Edition
A5E00105475-06
This manual is included in the documentation package
with Order No.: 6ES7398-8FA10-8BA0
The following supplement is part of this documentation:
No. Designation
Drawing number
Edition
1 Product Information A5E00688649-02 03/2006
2 Product Information A5E00830174-01 07/2006

Siemens CPU 312 Specifications

General

Product Type Designation	CPU 312
Power Supply	24 V DC
Number of Modules per Rack, Max.	8
Communication	MPI
Program Memory	16 KB
Load Memory (RAM)	16 KB
Digital Inputs	0
Digital Outputs	0
Analog Inputs	0
Analog Outputs	0
Inputs/Outputs	0
Communication Ports	MPI

Summary

Guide to the S7-300 documentation

Selecting and configuring

Safety Guidelines

Manual notices for personal safety and preventing property damage.

Operating and display elements

Operating and display elements: CPU 31xC

Specifics of operating and display elements for CPU 31xC.

Differences between the CPUs 31xC

Status and Error Indicators: CPU 31xC

Explains the meaning of status and error LEDs on CPU 31xC.

Operating and display elements: CPU 31x

Specifics of operating and display elements for CPU 31x.

Operating and display elements: CPU 317-2 DP

Specifics of operating and display elements for CPU 317-2 DP.

Operating and display elements: CPU 31x-2 PN/DP

Specifics of operating and display elements for CPU 31x-2 PN/DP.

Operating and display elements: CPU 319-3 PN/DP

Specifics of operating and display elements for CPU 319-3 PN/DP.

Communication

Interfaces

Communication services

S7 connections

Memory concept

Memory areas and retentivity

Explains different memory areas and their retentive properties.

Retentivity of load memory, system memory and RAM

Retentivity of memory objects

Address areas of system memory

Properties of the SIMATIC Micro Memory Card (MMC)

Outlines the properties and functions of the SIMATIC Micro Memory Card.

Cycle and reaction times

Cycle time

Explains cycle time definition, calculation, and factors.

Response time

Covers response time definition, factors, and calculation.

Calculating the cycle/response time

Provides methods for calculating cycle and response times.

Interrupt response time

Details interrupt response times and related factors.

Sample calculations

Technical data of CPU 31xC

CPU 312C

Technical specifications for CPU 312C.

CPU 313C

Technical specifications for CPU 313C.

CPU 313C-2 PtP and CPU 313C-2 DP

Technical specifications for CPU 313C-2 variants.

CPU 314C-2 PtP and CPU 314C-2 DP

Technical data of the integrated I/O

Technical data of CPU 31x

General technical data

General technical information for CPUs.

CPU 312

CPU 314

CPU 315-2 DP

CPU 315-2 PN/DP

CPU 317-2 DP

CPU 317-2 PN/DP

CPU 319-3 PN/DP