Omron NY532-5400 Troubleshooting Manual page 139

Errors Related to Tasks
Event name Task Execution Timeout
Meaning Task execution exceeded the timeout detection time.
PLC Function Module
Source
Error attri-
Level
butes
Effects User program
Variable
_<Task_name>_Exceeded
System-
defined _<Task_name>_ExceedCount
variables
_<Task_name>_LastExecTime
_<Task_name>_MaxExecTime
Assumed cause
The timeout detection time set-
ting is too short.
The task period setting is too
short.
A user program is too large.
The number of times that pro-
cessing is repeated is larger than
Cause and
expected.
correction
Task Priority Error
Frequent Event Task Execution
Attached Attached Information 1: Name of task where error occurred
information
Precautions/ None
Remarks
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 1-14.
NY-series Troubleshooting Manual (W564)
Source details
Major fault
Recovery
Stops. Operation
Data type
BOOL
UDINT
TIME
TIME
Correction
Increase the timeout detection
time.
Increase the task period.
Separate the processes into dif-
ferent tasks, for example move
processes that need a short exe-
cution period to a periodic task
with a lower priority.
If there is a program with an
extremely high number of repeti-
tions, correct the program to
achieve the correct number of
repetitions. Set a trap in the user
program that monitors the num-
ber of times a process is exe-
cuted to check the number of
repetitions.
Increase the priority of the task.
Or, decrease the priorities of the
other tasks.
Lower the frequency of event task
execution. Or, decrease the prior-
ities of the event tasks.
3 Error Descriptions and Corrections
Event code 60020000 hex
None Detection
timing
Cycle the
power supply
Log category
or reset the
Controller.
Stops.*
Name
Task Period Exceeded Flag
Task Period Exceeded Count
Last Task Execution Time
Maximum Task Execution Time
Prevention
Design the tasks considering the
corrections that are given on the
left.
Continuously
System
3
3-63