Link-up and update
8.3 Time monitoring
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
125
Time response
Time response during link-up
The influence of link-up operations on your plant's control system should be kept to an
absolute minimum. The current load on your automation system is therefore a decisive factor
in the increase of link-up times. The time required for link-up is in particular determined by
● the communication load
● the cycle time
Link-up takes about 2 minutes for automation systems without load.
It can take more than one hour when there is a high load on your automation system.
Time response during updating
The transmission time during updating depends on the current changes of the process
values and the communication load.
As a simple approximation, we can interpret the maximum inhibit time to be configured for
priority classes > 15 as a function of the data volume in the work memory. The volume of
code in the work memory is irrelevant.
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