to be initiated via defined action bits.

In addition, the data record provides standardized diagnostic information regarding the current status of the component. With this approach, a deliberate decision was made to eliminate the mapping of functions and status information onto a pure IO interface. By defining a uniform data record, the interface is kept the same for all components, which greatly simplifies the programming of the power management. The current content of the data record can be read and written via acyclic read/write services.

Conclusion
The PROFINET IO-based energy efficiency functions and the Wake on LAN command will provide plant operators in the future a means of optimizing the overall energy balance within a plant. The success of this approach is contingent on a speedy standardization by PI and quick-turnaround implementation of functions within components. In addition, new energy management tools are needed to close the gaps between production planning and production equipment control.

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