Rockwell-automation Logix5000 Controllers Tasks, Programs, and Routine Bedienungsanleitung PDF herunterladen (Seite 5)

Table of contents

Studio 5000 environment ..................................................................................... 7

Additional resources ............................................................................................... 8

Chapter 1

Introduction ............................................................................................................ 9

Select controller tasks ............................................................................................. 9

Use caution in the number of tasks that you use ..................................... 11

Prioritize periodic and event tasks ..................................................................... 11

Additional considerations ............................................................................ 12

Example ........................................................................................................... 13

Leave enough time for unscheduled communication .................................... 14

Avoid overlaps ....................................................................................................... 15

Manually check for overlaps ........................................................................ 16

Programmatically check for overlaps.......................................................... 17

Configure output processing for a task ............................................................. 19

Manually configure output processing ...................................................... 21

Programmatically configure output processing ........................................ 22

Inhibit a task .......................................................................................................... 23

Manually inhibit or uninhibit a task .......................................................... 24

Programmatically inhibit or uninhibit a task ........................................... 25

Create a task ........................................................................................................... 26

Create a periodic task .................................................................................... 27

Language switching ....................................................................................... 29

Adjust the system-overhead time slice .............................................................. 30

Configure the system-overhead time slice ................................................. 31

Adjust the system watchdog time ...................................................................... 32

Adjust the watchdog timer for a task ......................................................... 33

Chapter 2

Introduction .......................................................................................................... 35

Choose the trigger for an event task .................................................................. 35

Module Input Data State Change trigger ......................................................... 37

How an I/O module triggers an event task ............................................... 37

Make sure your module can trigger an event task .................................... 40

Checklist for an Input Event Task ............................................................. 40

Example – Input Event Task ....................................................................... 42

Estimate throughput ..................................................................................... 43

Example – estimate throughput .................................................................. 44

Preface

Manage tasks

Manage event tasks

Rockwell Automation Publication 1756-PM005-EN-P - October 2014 5

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Rockwell-automation Logix5000 Controllers Tasks, Programs, and Routine Bedienungsanleitung Seite 5