Siemens Simatic S7-300 CPU 31xC Series User Manual

Preface
S7-300, CPU 31xC and CPU 31x: Installation
iv Operating Instructions, Edition 08/2004, A5E00105492-05
Note
There you can obtain the descriptions of all current modules.
For new modules, or modules of a more recent version, we reserve the right to include a
Product Information containing latest 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 label
The SIMATIC S7-300 product series satisfies the requirements and safety specifications of
the following EU Directives:
• EU Directive 73/23/EC "Low-voltage directive"
• EU Directive 89/336/EWE "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.

Siemens Simatic S7-300 CPU 31xC Series Specifications

General

Series	S7-300 CPU 31xC
Power Supply	24 V DC
Communication Interfaces	MPI, PROFIBUS DP
Programming Languages	LAD, STL, FBD, SCL
Operating Temperature	0°C to +60°C
Memory	48 KB - 512 KB
Dimensions	40 x 125 x 130 mm (varies by model)