Codesys V3 Priorities; Table 201: Codesys V3 Priorities - WAGO 750-8207 Manual

WAGO-I/O-SYSTEM 750
750-8207 PFC200 CS 2ETH RS 3G
9.2

CODESYS V3 Priorities

A list of priorities implemented for the controller is provided below as
supplementary information to the CODESYS 3 documentation.

Table 201: CODESYS V3 Priorities

Scheduler
Preemptive
scheduling
-
Real-time
range
Fair
scheduling
-
None real-
time range
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
Linux
Task
Priority
Local or
-95 ... -86
fieldbus - HIGH
Mode selector
-85
switch monitoring
CODESYS
-83
watchdog
Cyclic and event-
-55 ... -53 1 ... 3
controlled IEC task
Local or
-52 ... -43
fieldbus - MID
Cyclic and event-
-42 ... -32 4 ... 14
controlled IEC task
Local or fieldbus –
-13 ... -4
LOW
CODESYS
communication
Back-
ground
Cyclic, event-
(20)
controlled and
freewheeling IEC
task
e!RUNTIME Runtime Environment 275
®
IEC
Remark
Priority
Internal data bus (-88)
Task registers changes
to the mode selector
switch and changes
the state of the PLC
application. (start, stop,
reset warm/cold)
Execution of the
watchdog functions
For real-time tasks
which must not be
influenced in execution
by external interfaces
(e.g., fieldbus).
CAN (-52 ... -51)
Profibus (-49 ... 45)
MODBUS slave/master
(-43)
For real-time tasks
which must not
influence fieldbus
communication during
execution.
Communication with
the CODESYS
development
environment
Incl. standard priority of
15
the visualization task
Manual