Tasks, events, and SRs
(Original Document)
About us
Introduction
Conversion replaces PL7 tasks EVT and SR by their Control Expert equivalents.
Tasks, EVTi, SR
The following table describes any correspondence and differences between the EVT and SR tasks in PL7 and Control Expert.
PL7
Control Expert
Status
MAST task
Cyclic or periodic
Cyclic or periodic
Converted
FAST task
Periodic
Periodic
Converted
Event processing: EVTi
The number of events available depends on the processor
The number of events available depends on the processor
Converted
The system words manage the events
The system words manage the events
Converted (1)
MASKEVT
UNMASKEVT
MASKEVT
UNMASKEVT
Converted (2)
EVTi: priority level
Priority level management
Priority level management
Converted
Subroutines: SRi
SRi
SR Section
Modified (3)
Legend:
(1)
The same system objects exist in Control Expert.
(2)
The same EFs exist in Control Expert.
(3)
The SR name is modified but the operation remains the same. In Control Expert, the SRi becomes an SR section named SRi().