Functions
3.1 Cycle synchronization
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
24
Manual, 03/2008, A5E01075975-02
3.
DP slave settings:
DP slave "Object properties" > "Cycle synchronization" tab
–
Activate "Synchronize DP slave to equidistant DP cycle".
–
Enter the times Ti and To (if "Times Ti and To identical for all slaves" has not been set
on the DP master system). Recommendation: Accept the standard settings for Ti and
To.
–
Select the electronic modules to be synchronized and assign them in the "Addresses"
tab to the sub-process image defined in the CPU. For further information, please refer
to the
Isochronous Mode Function Manual.
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Figure 3-3
DP slave properties dialog box
Note
If you click on "Cycle synchronization" in the "Edit" menu, a configuration overview of
the cycle-synchronized modules appears.
4.
Create user program:
–
Creating the OB 61.
–
At the start of the OB 61, the SFC 126 must be called in order to update the sub-
process image of the inputs.
–
At the end of the OB 61, the SFC 127 must be called in order to update the sub-
process image of the outputs.
–
The sub-process image to be used is the sub-process image parameterized in the
CPU ("Cycle synchronization alarms" tab).
