A-1 Task Design Procedure; A-1-1 Startup Time Of The Opc Ua Server (Reference Values; Startup Time Of The Opc Ua Server (Reference Values - Omron NJ501-1300 User Manual

Appendices

A-1 Task Design Procedure

This section describes the task design procedure for the OPC UA Server.
Refer to the NJ/NX-series CPU Unit Software User's Manual (Cat. No. W501) for the task and system
service operation specifications of the NJ-series Controllers.
A-1-1

Startup Time of the OPC UA Server (Reference Values)

The time required to get the OPC UA Server ready for operation after turning on the power of the CPU
Unit (hereinafter called "startup time") varies depending on the number of network-published variables
and the task execution time ratio.
The following graphs show reference values given when the data type of all network-published vari-
ables is INT type.
Please design your system by reference to these graphs.
Change in Startup Time Depending on Number of Network-published Variables
Start-Up Time
(Unit: Second)
250.00
200.00
150.00
100.00
50.00
0.00
0
Change in Startup Time Depending on Task Execution Time Ratio
Start-Up Time
(Unit: Second)
250.00
200.00
150.00
100.00
50.00
0.00
50%
Percentage of task execution time
A - 2
2000 4000 6000
Number of Network-published Variables (Example: INT type)
60% 70% 80% 90%
Cannot be recommended because the
system service time ratio becomes ≤ 20%.
Percentage of task
execution time
None
50%
60%
70%
80%
90%
8000 10000
Number of Network-
published Variables
(Example: INT type)
0
100
1000
5000
10000
NJ-series CPU Unit OPC UA User's Manual (W588)
Cannot be recommended
because the system service
time ratio becomes ≤ 20%.