Omron Sysmac NX1P2-10 1 Series, User Manual

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Additional Information
• For CPU Units with unit version 1.03 or later, tag data link is processed in the tag data link
service.
• For CPU Units with unit version 1.00 to 1.02, tag data link is processed in the system service.
If a tag data link timeout occurs, reconsider the execution time of the system service.
1.
Input ON Response Time
The input ON response time contains the delay time for the external input device from when the
input occurs until the switch actually changes to ON and the time until the input data is stored in
the memory area of the CPU Unit. Refer to the input delay information of the device for input
switch delay time.
One task period is required until the input data is stored in the memory area of the CPU Unit. Ac-
cordingly, the input ON response time is calculated as below.
Input ON response time = Input device delay time + Task period
2.
Send Data Processing Time
This is the time required to transfer a variable from a CPU Unit to the built-in EtherNet/IP port.
Since data transfer is executed as part of task processing, the send data processing time is as
long as the task period.
If the data is larger than the allowable data size to send in a single task process (which can be set
with
Variable Access Time of the task), the data will be transferred over more than one task peri-
od, requiring additional time equivalent to the task period multiplied by the number of transfers.
For details on the send data processing time, refer to
15-3-2 Built-in EtherNet/IP Port Data Proc-
essing Time on page 15-23.
3.
Packet Interval (RPI)
This is the communications refresh period which can be specified on the Network Configurator.
4.
Network Transmission Delay Time
The transmission delay on an Ethernet line is 50 μs or less. This delay time can be ignored.
5.
Receive Data Processing Time
This is the time required to transfer data that is received on the built-in EtherNet/IP port to a varia-
ble in the CPU Unit.
Since data receive is executed as part of task processing, the receive data processing time is as
long as the task period.
If the data is larger than the allowable data size to receive in a single task process (which can be
set with
Variable Access Time of the task), the data will be transferred over more than one task
period, requiring additional time equivalent to the task period multiplied by the number of transfers.
For details on the receive data processing time, refer to
15-3-2 Built-in EtherNet/IP Port Data Proc-
essing Time on page 15-23.
Data transfer is executed once every task period. If another input data is received just after the da-
ta transfer in the current task period, the transfer of the received data will be delayed by one Con-
troller task period.
15 Communications Performance and Communications Load
15-27
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
15-3
I/O Response T
ime in T
ag Data Links
15
15-3-4 Maximum T
ag Data Link I/O Response T
ime