Siemens SIMATIC CPU 410 System Manual page 365

● For relay outputs: typical delay times of 10 ms to 20 ms.
● For analog inputs: cycle time for analog input
● For analog outputs: response time at analog outputs
For information on delay times, refer to the technical specifications of the signal modules.
DP cycle times on the PROFIBUS DP network
If you configured your PROFIBUS DP network in STEP 7, STEP 7 calculates the typical DP
cycle time to be expected. You can then view the DP cycle time of your configuration on the
PG in the bus parameters section.
The figure below provides an overview of the DP cycle time. In this example, we assume an
average value for each DP slave of 4 bytes of data.
Figure 18-31 DP cycle times on the PROFIBUS DP network
If you are operating a PROFIBUS DP network with more than one master, you will need to
take the DP cycle time into account for each master. In other words, perform a separate
calculation for each master and add the results together.
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
The delay of relay outputs depends on
the temperature and voltage, among other things.
Supplementary information
18.16 CPU 410 cycle and reaction times
365