240 Run-time System CODESYS 2.3
WAGO-I/O-SYSTEM 750
750-8207 PFC200 CS 2ETH RS 3G
Manual
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
… 31. These tasks all receive the same computing time from the operating
system (“Completely Fair Scheduler” procedure).
8.4.2
Freewheeling Tasks
So-called freewheeling tasks are not processed in cycles. Their processing
depends solely on the current capacity of the system. The input field “Priority
(0 … 31)” is provided for freewheeling tasks without a function. These tasks are
handled as tasks with priority 21 … 31.
Figure 75: Freewheeling Task
PLC-PRG as Freewheeling Task without Task Configuration
If you do not perform any task configuration, the program PLC_PRG is carried
out with the lowest priority at an interval of 10 ms. The runtime of “freewheeling
tasks” is not monitored by a CODESYS watchdog.
8.4.3
Debugging an IEC Program
If the IEC program is debugged with breakpoints, the behavior on actuation of the
mode selector switch is defined as follows:
Provided that a task is not located on a breakpoint, RUN and STOP from the user
interface (IDE) and from the mode selector switch (BAS) always have an effect
on all tasks (case 1 and case 2).