Functions
3.1 Cycle synchronization
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
Manual, 03/2008, A5E01075975-02
23
2.
DP master system settings:
DP master "Object properties" > "General" tab > "Properties" button > "Parameter" tab >
"Properties" button > "Network settings" tab > "Options" button
–
Activate constant bus cycle time on the DP master system
–
Set the length of the constant bus DP cycle (max. 32 ms)
–
Set "Times Ti and To identical for all slaves" (effects a synchronization of the I/O data
of the various DP slaves)
–
Times Ti and To can be set separately. Recommendation: Accept the standard
settings for Ti and To.
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Figure 3-2
Dialog box options
Note
With the "Calculate again" button you can calculate a value for the constant buy DP
cycle from STEP 7 that takes into account the current PROFIBUS DP configuration.
This value is then automatically entered in the "Equidistant DP cycle", "Time Ti (...),"
and "Time To (...)" boxes.