Chapter 8 Logic Instructions
8-53
8_
Enable
Valid
Er ror
E rr or ID
Status
Case 1
Case 2
Case 3
Case 1
:
Valid
changes from FALSE to TRUE when
Enable
changes from FALSE to TRUE.
Case 2
:
Valid
changes from FALSE to TRUE when
Enable
changes from FALSE to TRUE. When the
task execution time exceeds the watchdog time,
Status
changes to TRUE. When
Enable
changes from TRUE to FALSE,
Valid
changes to FALSE and
Status
changes to FALSE.
Case 3
:
When an error occurs as
Enable
changes from FALSE to TRUE,
Error
changes to TRUE and
ErrorID
shows corresponding error codes. When
Enable
changes from TRUE to FALSE,
Error
changes to FALSE.
Function
The Sys_WdgStatus instruction is used to read whether or not the execution time of the specified task
exceeds
the allowed setting time (watchdog time). When this instruction is used, do not place it in the
task specified by
TaskPriority.
It should be placed in other different task for execution.
The
Status
output of the instruction changes from FALSE to TRUE, the execution of the task specified
by
TaskPriority
stops.
Status
of the instruction can be used to perform related operation in other task by
users.
Содержание DVP-15MC Series
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