Siemens SIMATIC S7-300 Series Reference Manual page 159

Standards, Certificates and Approvals
Introduction
This Appendix provides the following information on the S7-300 modules and
components:
S The most important standards and criteria met by S7-300 and
S Approvals that have been granted for the S7-300.
IEC 1131
The S7-300 programmable controller meets the requirements and criteria to
standard IEC 1131, Part 2.
CE Symbol
Our products meet the requirements and protection guidelines of the following EC
Directives and comply with the harmonized European standards (EN) issued in the
Official Journal of the European Communities with regard to programmable
controllers:
S 89/336/EEC "Electromagnetic Compatibility" (EMC Directive)
S 73/23/EEC "Electrical Equipment Designed for Use between Certain Voltage
Limits" (Low-Voltage Directive)
The declarations of conformity are held at the address below, where they can be
obtained if and when required by the respective authorities:
Siemens Aktiengesellschaft
Automation Group
A&D AS RD 4
P.O. Box 1963
D-92209 Amberg Federal Republic of Germany
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
A
A-1