Supplementary information
15.15 Cycle and response times of the CPU 410-5H
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
309
The figure below shows the conditions under which the shortest response time is achieved.
Figure 15-32 Shortest response time
The (shortest) response time is calculated as follows:
● 1 x process image transfer time of the inputs +
● 1 x process image transfer time of the outputs +
● 1 x program processing time +
● 1 x operating system processing time at the SCCP +
● Delay of the inputs and outputs
The result is equivalent to the sum of the cycle time plus the I/O delay times.
Note
If the CPU and signal module are not in the central controller, you m
ust add twice the
runtime of the DP slave frame (including processing in the DP master).
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