Parameters For Primary Periodic Task And Periodic Tasks - Omron NJ-series User Manual

Version Information
The CPU Unit with unit version 1.08 or later and Sysmac Studio version 1.09 or higher are
required to use the Initial Status setting for programs at the start of operation, the PrgStart
instruction and the PrgStop instruction.
POUs That You Can Assign to Tasks
From 0 to 128 programs can be assigned to one task.
You can assign only program POUs. You cannot assign function block instances or functions directly
to tasks. You cannot assign the same program to more than one task.

5-2-12 Parameters for Primary Periodic Task and Periodic Tasks

The parameters for primary periodic task and periodic tasks are given below.
 Parameters for Primary Periodic Tasks
Parameter
Task Type
Execution priority
Task Name
Period/
Task period
Execu-
tion Con-
ditions
Task Period Exceeded Detec-
tion
Task Timeout Detection Time
Variable Access Time [%]
*1 The process data communications cycle in the EtherCAT settings will be the same as this period.
*2 With the NJ301-, you can use this setting with unit version 1.03 or later.
NJ-series CPU Unit Software User's Manual (W501)
Setting range
Specify the primary periodic task.
Always 4.
Text string
500 s
*1 *2
, 1 ms, 2 ms, or 4 ms
Specify whether to detect an error if
the task execution time exceeds the
specified task period.
• Detect (a minor fault level Controller
error is generated).
• Do not detect (an observation is
recorded in event log).
Refer to Task Period Exceeded Error
on page 5-45 for details.
Set the time to detect timeouts if task
execution does not end, e.g., if there is
an infinite loop. Set a multiple of the
task period.
1 to 5
Refer to Task Execution Timeout Error
on page 5-46 for details.
Set the percentage of the task period
to assign to variable access.
1% to 50%
Refer to Settings for Variable Access
Time on page 5-40 for details.
5 Designing Tasks
Changes
Update
Default in RUN
timing
mode
--- When Not
trans- allowed.
---
ferred to
Primary-
CPU Unit
Task
1 ms
Detect.
5
3%
5
5-33