Aggregation - consists out of
Generalisation - is sub-class of
1...n
Relationship - has a relation to
PROFIdrive
Device
SupervisorController P-Device
Drive Object
(DO)
Drive Unit
(DU)
1...n
Fig. 359: Hierarchical order in the PROFIdrive Object Model
Clustering the Drive Objects in Drive Units may be used to define the affiliation of Drive
Objects to one physical drive control unit (CPU) or physical cluster. The Drive Unit
expresses definitely the area of validity of global parameters.
The understanding of this concept is crucial for parameter accesses in multi-axis P-
Devices. This is because global and local accesses are distinguished. A local access
refers to a special axis (DO), a global access refers to the device (DU).
The typical functionality of the Drive Object is the drive functionality itself, i.e. the motion
task related parameters (motor, inverter stage, closed loop current and speed control,
Input and output functionality). For example, one drive axis is related to a Drive Object.
Local parameter access
versus Global parameter
access
Sigma-7 Series SERVOPACKs
PROFINET Communication
Drive Units (DU) and Drive Objects (DO)
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 486
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