Omron NJ-series User Manual page 155

5 Designing Tasks
Execution Timing of the Tag Data Link Service
The execution interval and the execution time depend on the model of the CPU Unit and on the tag
data link settings. Guidelines are provided below. However, if a task with a higher execution priority
than the tag data link service is executed, the execution interval and the execution time will be longer
than the following values.
Execution
priority
High
Primary
periodic task
Priority-16
periodic task
Tag data link
service
Priority-17
periodic task
System
service
Low
 Using the Built-in EtherNet/IP Port on the CPU Unit
CPU Unit
NJ501-
NJ301-
 Using the CJ1W-EIP21 EtherNet/IP Unit
CPU Unit
NJ501-
NJ301-
5-28
Primary period
IO UPG MC IO UPG MC
Task period
Execution interval of the tag data
IO UPG
link service
UPG
Execution interval of the
tag data link service
Tag data link settings
Number Number of
of tags connections
8
8
Tag data link settings
Number of Number of
tags connections
8
8
IO UPG MC IO UPG MC
Task period
Interrupted.
Execution
RPI
interval (ms)
[ms]
1 1
4 2
32 50
1 1
4 2
32 50
RPI Send/re
interval (ms)
[ms] ceive
1 1 Send
Receive
4 2 Send
Receive
32 50 Send
Receive
1 1 Send
Receive
4 2 Send
Receive
32 50 Send
Receive
NJ-series CPU Unit Software User's Manual (W501)
IO UPG MC
IO UPG
Execution
time (ms)
1 0.02 to 0.04
1 0.02 to 0.10
1 0.02 to 0.10
1 0.03 to 0.06
1 0.03 to 0.15
1 0.03 to 0.15
Execution Execution
time (ms)
3 0.10
3 0.10
4 0.22
4 0.13
12 0.68
6 to 35 0.23 to 0.66
3 0.16
3 0.16
3 0.21
4 0.33
15 1.05
8 to 35 0.29 to 1.85