Siemens SIMATIC PCS 7 FOUNDATION Fieldbus Commissioning Manual page 51

Color
Amber
Red
Setting the macrocycle
1. Select the FOUNDATION Fieldbus in HW Config of SIMATIC Manager.
2. Select the Edit > Object Properties menu command.
The "FF subsystem properties" dialog window opens.
3. Specify the subsystem number of the FF segment, if necessary.
A change is generally not needed.
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.
The changes are applied to the PCS 7 project.
Adapting the macrocycle
Note
An adaptation of the macrocycle requires a STOP of the FF segment.
If an adaptation of the macrocycle is needed after the downloading all FF devices, then all FF
devices must be downloaded again. Observe the following especially after the following actions:
● Adding FF devices
● Adding new interconnections with the Interconnection Editor
FOUNDATION Fieldbus
Commissioning Manual, 02/2015, A5E32711026-AC
Meaning
Downloading the configuration with the
selected settings results in a high bus
load.
Downloading the configuration with the
selected settings results in a very high
bus load.
5.3 Parameter assignment
Recommendation/notes
Change the value marked in orange to
modify the configuration in accord‐
ance with the recommendations of the
Fieldbus Foundation.
Note
Restrictions to acyclic communication
are possible.
Change the value marked in red to
modify the configuration in accord‐
ance with the recommendations of the
Fieldbus Foundation.
Note
Errors during acyclic communication
are possible. This configuration can‐
not be downloaded.
Engineering
51