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3.2 Diagnostics
Note
Setting the communication load
The controller predicts the effects of the changed communication load on the cycle time. You
configure the maximum communication load in STEP 7.
Note
For non-measurable fluctuations in the user program, e.g. for future changes in the user
program, plan a sufficiently low value for the maximum communication load.
Note
Due to the different acquisition bases of cycle time and load, a settled system state is
required to display reliable measured values.
You can find additional information about the influence of the communication on the cycle
time in the Cycle and Response Times
(https://support.industry.siemens.com/cs/us/en/view/59193558) function manual.
Trend for program/communication load
If your browser supports the display of SVG (Scalable Vector Graphics), the display in the
"Runtime information" tab is expanded to show the trend for program/communication load.
With the line charts in the "Trend for program/communication load" area, you can track the
progression of the following values:
● "Program load of the cyclic program OBs"
● "Program load high-priority OBs"
● "Current communications load"
With the "Number of recorded measuring points" option, you can choose between the last 20
to 1 000 measured values for the display of the measured values.
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Function Manual, 11/2019, A5E03484625-AG

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