Preface 
CPU 31xC and CPU 31x, Technical Data 
Manual, 01/2006 Edition, A5E00105475-06 
v 
CE label 
The SIMATIC S7-300 product series satisfies the requirements and safety specifications of 
the following 
 EC Directives: 
•  EC Directive 73/23/EEC "Low-voltage directive" 
•  EC Directive 89/336/EEC "EMC directive" 
C tick mark 
The SIMATIC S7-300 product series is compliant with AS/NZS 2064 (Australia). 
Standards 
The SIMATIC S7-300 product series is compliant with IEC 61131-2. 
Documentation classification 
This manual is part of the S7-300 documentation package. 
 
Name of the manual  Description 
YOU ARE READING the Manual 
•  CPU 31xC and CPU 31x, Technical 
Specifications 
Operation and display elements, 
communication, memory concept, cycle and 
response times, technical specifications 
Operating Instructions 
•  S7-300, CPU 31xC and CPU 31x: Installation 
Configuration, installation, wiring, addressing, 
commissioning, maintenance and the test 
functions, diagnostics and troubleshooting. 
System Manual 
PROFINET System Description 
Basic information on PROFINET: 
Network components, data exchange and 
communication, PROFINET IO, Component 
Based Automation, sample application 
PROFINET IO and Component Based 
Automation 
Programming Manual  
From PROFIBUS DP to PROFINET IO 
Guideline for the migration from PROFIBUS DP 
to PROFINET I/O. 
Manual 
•  CPU 31xC: Technological functions 
•  Examples 
Description of the individual technological 
functions Positioning, Counting. PtP 
communication, rules 
The CD contains examples of the technological 
functions 
Reference Manual 
•  S7-300 Automation System: Module data 
Descriptions of functions and technical 
specifications of signal modules, power supply 
modules and interface modules 
Instruction List 
•  CPU 31xC and CPU 31x 
List of operation repertoire of CPU and its 
execution times. List of executable blocks.