Lenze PROFIBU PC-based Automation Manual do Utilizador descarregar pdf (Página 59)

DMS 2.2 EN 07/2011 TD17 L 59

Control technology | PROFIBUS communication manual

Defining the minimum cycle time of the PLC project

Detecting the task utilisation of the application (T

Task utilisation

)

9.2.2 Detecting the task utilisation

Initial situation

A project with, for instance, a motion task and two 2 tasks of a lower priority is created

completely.

 How to detect the task utilisation T

Task utilisation

1. For a first measurement of T

Task utilisation

the cycle times of all cyclic tasks in the PLC

system are set to 'long'.

• Example: Motion task = 10 ms, all other cyclic tasks = 20 ms

2. Log in and load project.

3. After the system has started up completely, press the Reset button on the Task

processing tab.

• The displayed task runtimes are reset.

4. Read the maximum computing time of the task with the highest priority that is

shown in the task configuration (T

Task utilisation

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Lenze PROFIBU PC-based Automation Manual do Utilizador Página 59