Preface

Purpose of this manual 
To get you started, this manual contains the information you will need to plan,
assemble, wire up, address and commission a S7-300.
You will then get to know the tools you can use to diagnose and eliminate errors in
hardware and software.

Basic knowledge required

To understand this manual you will require a general knowledge of automation
technology, backed up by a knowledge of the STEP 7 basic software. You may find
it useful to read the Programming with STEP 7 V5.1 manual first.

Scope of the manual

This manual is applicable to the following CPUs and hardware and software
versions:
CPU 312C 6ES7312-5BD01-0AB0 
CPU 313C 6ES7313-5BE01-0AB0
CPU 313C-2 PtP 6ES7313-6BE01-0AB0
CPU 313C-2 DP 6ES7313-6CE01-0AB0
CPU 314C-2 PtP 6ES7314-6BF01-0AB0 
CPU 314C-2 DP 6ES7314-6CF01-0AB0
CPU 312 6ES7312-1AD10-0AB0 
CPU 314 6ES7314-1AF10-0AB0
CPU 315-2 DP 6ES7315-2AG10-0AB0
CPU 317-2 DP 6ES7317-2AJ10-0AB0 

Note

This manual describes all modules available at the time of publication.
We reserve the right to enclose Product Information for new modules or new
versions of modules containing up-to-date information.

Approvals
The SIMATIC S7-300 product series has the following approvals:
• Underwriters Laboratories, Inc.: UL 508 (Industrial Control Equipment)
• Canadian Standards Association: CSA C22.2 No. 142, (Process Control
Equipment)
• Factory Mutual Research: Approval Standard Class Number 3611

CE mark

The SIMATIC S7-300 product series conforms to the requirements and safety
specifications of following EU directives:
• EU directive 73/23/EWE "Low-voltage directive"
• EU 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 the requirements and criteria
for IEC 61131-2.