Siemens CPU 313C Hardware And Installation Guide

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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
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Please note the following points if you wish to arrange your modules on multiple
racks:
• The interface module always uses slot 3 (slot 1: power supply; slot 2: CPU, slot
3: interface module)
• It is always on the left before the first signal module.
• No more than 8 modules (SM, FM, CP) are permitted per rack.
• The number of modules (SM, FM, CP) is limited by the permitted current load
on the S7-300 backplane bus. The total power consumption must not exceed
1.2 A per row.
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The power consumption of the individual modules is given in the 0RGXOH'DWD
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Special shielding and grounding measures are not required if you interconnect the
CU and EM using suitable interface modules (Send IM and Receive IM).
However, you must ensure that
• all racks are interconnected with low impedance,
• the racks of a grounded assembly are grounded in a star pattern,
• the contact springs on the racks are clean and not bent, thus ensuring that
interference currents are dissipated.

Siemens CPU 313C Specifications

General

MPI Interface	Yes
Number of digital inputs	24
Number of digital outputs	16
Number of analog inputs	4
Number of analog outputs	2
Supply voltage	24 V DC
High-speed counters	Yes
Bit Operations Execution Time	0.1 µs
Word Operations Execution Time	0.2 µs
Power Consumption	5 W
Dimensions (W x H x D)	40 x 125 x 130 mm
Operating Temperature	0 to 60 °C
Communication Interfaces	MPI
Programming Languages	LAD, FBD, STL
Product type designation	CPU 313C
Weight	490 g