Siemens CPU 315-2 DP Reference Manual

Cycle and Reaction times
3-5
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Longest Response Time
Figure 3-3 shows the conditions that result in the longest response time.
Operating
system
User
program
PII
While the PII is being read in, the status of
the observed input changes. The change in
the input signal is no longer taken into
account in the PII.
PIO
The change in the input signal is taken
account of in the PII here.
The change in the input signal is processed
by the user program here.
The response of the user program to the
input signal change is passed on to the
outputs here.
Response Time
Delay of the inputs + bus runtime on
the PROFIBUS-DP
Delay of the outputs + bus runtime on
the PROFIBUS-DP
Operating
system
User
program
PII
PIO
Figure 3-3 Longest Response Time

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