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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The figure below shows you an example of an MPI subnet and where to install the
terminating resistor.
The figure below illustrates where the terminating resistors must be connected in
an MPI subnet. In this example, the programming device is connected via a stub
cable during commissioning or maintenance only.
OP 27
PG
PG
RS 485-
Repeater
1
CPU
PS
ET 200 M
S7-300
CPU
PS
CPU
CPU
PS
ET 200 M
S7-300
CPU
PS
CPU
CPU
PS
ET 200 M
S7-300
CPU
PS
CPU
OP 27
CPU
PS
ET 200 M
S7-300
CPU
PS
CPU
1
1
2
1
Installing Figure 5-19 the terminating resistors in an MPI subnet
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 Terminating resistor inserted
 PG connected by means of a stub cable for maintenance purposes

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