● Light green and dark green
Configuration is free from errors. The percentage of cyclic communication is displayed in
dark green. The light green percentage indicates the time that has been reserved for cyclical
communication but is not required.
– You can reduce the time for the macro cycle of a specified acyclic portion.
● Amber
Downloading the configuration with the selected settings results in a high bus load.
– Recommendation:
Change the value marked in orange to modify the configuration in accordance with the
recommendations of the Fieldbus Foundation.
Note
Restrictions to acyclic communication are possible.
● Red
Downloading the configuration with the selected settings results in a very high bus load.
– Recommendation:
Change the value marked in red to modify the configuration in accordance with the
recommendations of the Fieldbus Foundation.
Note
Since there may be be errors in the acyclic communication, this configuration cannot
be downloaded.
Setting the macro cycle
1. Select the FOUNDATION Fieldbus in the SIMATIC Manager in HW Config.
2. Select the menu command Edit > Object Properties.
The "Properties - FF subsystem" dialog window opens.
3. Set the subsystem number of the FF segment, if necessary.
A modification is usually not required.
4. Click "Properties...".
The "Properties - Foundation Fieldbus" dialog box opens.
5. Open the "Macrocycle" tab.
6. Enter the system-specific settings.
7. Click the "Calculate schedule" button.
The consistency of the set parameters is checked. The result is displayed graphically.
8. Select the Station > Save menu command.
These changes are applied to the PCS 7 project.
Engineering
4.3 Parameter assignment
FOUNDATION Fieldbus
Commissioning Manual, 03/2013, A5E03880935-02 43
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