WAGO I/O SYSTEM 750 XTR
Run-time System CODESYS 2.3 257
750-8202/040-001 PFC200 2ETH RS TELE XTR
Manual
Version 1.2.0, valid from FW Version 03.01.07(13)
Priority 21 … 31:
Applications such as long-lasting arithmetic operations and non-real-time-
relevant access to ETHERNET and the file system, to fieldbus data and the RS-
232 interface (when provided) are to be carried out as tasks with the lowest
priorities 21 … 31. No prioritiy distinction is made between tasks of priorities 21
… 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 76: 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.
