Omron Sysmac NJ-series User Manual

7 Tag Data Link Functions
7-16
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
• NX1P2 CPU Units
• You can execute the tag data link service, option board service or system services in parallel
with the execution of tasks.
• The order of execution priority is tag data link service, option board service and then system
services.
• NJ-series CPU Units
• Execution of the tag data link service is given priority over execution of the priority-17 periodic
task. However, execution of the primary periodic task and priority-16 periodic task is given
even higher priority.
• The system services are executed in the unused time between execution of all of the tasks
and tag data link service.
Primary period
High
Low
IO UPG MC
System service
Tag data link
service
IO
UPG MC
IO
UPG MC
IO
UPG MC
IO
UPG MC
Primary
periodic task
Priority-17
periodic task
(1) (2) (1) (2) (1) (2) (1) (2) (1) (2)
*: Refreshed during system common processing 2 in the task processing.
(1) Execution timing of the program
(2) Refresh timing of network variables (tags) with the primary periodic task set as the refreshing task*
(3) Refresh timing of network variables (tags) that do not have the primary periodic task set as the refreshing task
Task period
Pausing
Option board
service
Tag data link service execution interval
(3)
Execution
priority
Tag data is read
from the tag set.
UPG
(2)
(3)
Execution
priority
Primary period
High
Low
Primary
periodic task
Priority-16
periodic task
Priority-17
periodic task
(1) (2) (1) (2)
(2)
(1) (2) (1) (2) (1) (2)
*: Refreshed during system common processing 2 in the task processing.
.....
(1) Execution timing of the program
(2) Refresh timing of network variables (tags) with the primary periodic task set as the refreshing task*
(3) Refresh timing of network variables (tags) that do not have the primary periodic task set as the refreshing task
The system service is executed
during free time between task
execution.
System service
UPG
IO
IO UPG MC
UPG
IO
IO
UPG MC
IO
UPG MC
IO
UPG MC
IO
UPG MC
(3)
(3)
UP
G
Task
p
eriod
Tag data is read
from the tag set.
Task
p
eriod
Pausing
Tag data link
service

Omron Sysmac NJ-series Specifications

General

Brand	Omron
Model	Sysmac NJ-series
Category	Computer Hardware
Language	English