Siemens S7-300 appendix Longest response time, Conditions for the longest response time

Cycle and reaction times 5.3 Response time

5.3.3Longest response time

Conditions for the longest response time

The figure below shows the conditions under which the longest response time is reached.

Response time

CCP (OS)

PIO

PII

CCP (OS)

PIO

PII

Delay of inputs +

2 x DP cycle time at PROFIBUS DP

While reading in the PII, the status of the monitored input changes. This change of the input signal is not included in the PII any longer.

The change of the input signal is included in the PII.

The change of the input signal is processed by the application program.

PIO

The response of the user program to the change of the input signal is issued to the outputs.

Delay of outputs +

2 x DP cycle time at PROFIBUS DP

CPU 31xC and CPU 31x, Technical data	5-17
Manual, Edition 08/2004, A5E00105475-05