Siemens CPU 315-2 DP 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 315-2 DP Specifications

General

Memory	64 KB
Power Supply	24 V DC
Order Number	6ES7 315-2AG10-0AB0
Number of DP Masters	1
Number of DP Slaves	124
Load Memory	64 KB
Number of Timers	256
Number of Counters	256
Data Memory	64 KB
Operating Temperature	0 to 60 °C
Integrated Interfaces	MPI, DP
Digital Outputs	Not integrated
Analog Inputs	Not integrated
Analog Outputs	Not integrated
Programming Languages	LAD, FBD, STL
Digital Inputs	Not integrated
Weight	660 g