Lenze PROFIBUS Controller-based Automation - Manual (Page 46)

9 Defining the minimum cycle time of the PLC project
9.2 Optimising the system
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Lenze · Controller-based Automation · PROFIBUS® Communication Manual · DMS 4.3 EN · 04/2014 · TD17
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9.2 Optimising the system
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How to optimise the system:
1. Use the menu command Online  Login, or log in on the Lenze Controller with +.
• For this, the PLC program must be error-free.
• With the log-in, the fieldbus configuration and the PLC program are loaded into the
Controller.
2. Check the task processing times.
3. Optimising the cycle times:
• If technologically required, the cycle times of the remaining tasks with lower priorities
can be decreased.
• Condition: No task with a low priority must assign more than 60 percent of the
corresponding cycle time in its task utilisation.