Siemens CPU 315-2 DP Reference Manual

CPU 31x-2 as DP Master/DP Slave and Direct Communication
2-4
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
2.2 DP Address Areas of the CPUs 31x-2
Address areas of CPUs 31x-2
Address area 315-2 DP 316-2DP 318-2
DP address area
for I/Os
1024 bytes 2048 bytes 8192 bytes
of these in the I/O
process images
Bytes 0 to 127 Bytes 0 to 127 Bytes 0 to 255
(default)
Can be set up to
byte 2047
In the input address area, DP diagnostic addresses occupy 1 byte for the DP
master and for each DP slave. Under these addresses, for example, you can call
DP standard diagnostics for the respective nodes (LADDR parameter of SFC13).
The DP diagnostic addresses are specified during configuration. If you do not
specify any DP diagnostic addresses, STEP 7 assigns these addresses, in
decrements starting at the highest byte.
Configuring modules with addresses assigned to the peripheral area
Always configure a module address in a peripheral area either completely inside or
completely outside of the process image. Otherwise, consistency is not ensured
and corrupted data might be generated.

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