Lenze PROFIBUS Controller-based Automation Manual do Utilizador descarregar pdf (Página 46)

9 Defining the minimum cycle time of the PLC project

9.2 Optimising the system

Lenze · Controller-based Automation · PROFIBUS® Communication Manual · DMS 4.3 EN · 04/2014 · TD17

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9.2 Optimising the system

 How to optimise the system:

1. Use the menu command Online  Login, or log in on the Lenze Controller with <Alt>+<F8>.

• 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.

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Lenze PROFIBUS Controller-based Automation Manual do Utilizador Página 46