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VTB USER GUIDE

5 TASKS MANAGED BY VTB

VTB provides the programmer for TASKS wich can be combined to create an application. Two of these are interrupt

tasks, that means they are executed, interrupting the other tasks, at fixed and constant time; the other two task in

cooperative mode: they are executed one after another. The TASK PLC is the DETERMINISTIC task at highest level witch

interrupts all the other tasks, the TASK TIME works like TASK PLC but with a lower level, finally the PAGE TASK and MAIN

TASK run in cooperative mode between them and can be interrupted by the other two.

Service

Management

VTB

KERNEL

MAIN

Code

PAGE

Code

TASK PLC

High Priority

Interrupt

TASK TIME

LOW Priority

Interrupt

Cooperative Task

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