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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This Chapter helps you to get acquainted with tools you can use to carry out the
following tasks:
• Hardware/software error diagnostics.
• Elimination of hardware/software errors.
• Testing the hardware/software - for example, during commissioning.
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It would go beyond the scope of this manual to provide detailed descriptions of all
the tools you can use for diagnostics, testing and troubleshooting functions.
Further notes are found in the relevant hardware/software manuals.
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STEP 7 offers you the following testing functions you can also use for diagnostics:
• Monitoring and modifying of variables
Can be used for PG/PC monitoring of specific CPU or user program variables.
You can also declare permanent values for the variables.
• Testing with program status
You can test your program by viewing the program status of each function
(result of logical links, status bit) or the data of specific registers in real-time
mode.
For example, if you have selected the programming language LAD in STEP 7
for your presentation, the color of the symbol will indicate a closed switch or an
active circuit.

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