Longest Response Time - Siemens Simatic S7-300 Technical Data Manual

5.3.3

Longest response time

Conditions for the longest response time
The figure below shows the conditions under which the longest response time is reached.
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
CCP (OS)
PIO
While reading in the PII, the status of the monitored
input changes. This change of the input signal is not
PII
included in the PII any longer.
CCP (OS)
PIO
The change of the input signal is included in the PII.
PII
The change of the input signal is processed by the
application program.
The response of the user program to the change
PIO of the input signal is issued to the outputs.
Delay of inputs +
2 x DP cycle time at PROFIBUS DP
Delay of outputs +
2 x DP cycle time at PROFIBUS DP
Cycle and reaction times
5.3 Response time
5-17