Omron Sysmac NY512-1300, Руководство пользователя

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13-25
13 Communications Performance and Communications Load
NY-series Industrial Panel PC / Industrial Box PC Built-in EtherNet/IP Port User’s Manual (W563)
13-3 I
/O R
espo
n
se T
im
e in T
ag
Dat
a Lin
ks
13
13-
3-4 Ma
ximum T
ag Dat
a L
ink I/O Response T
ime
You can find the maximum I/O response time from the total of (1) to (6) in the following figure.
(1) Input ON Response Time
This is the delay time for the external input device from when the input occurs until the switch actu-
ally changes to ON and the time until the input data is stored in the memory area of the Controller.
Refer to the input delay of each device for the input switch delay time. Also, one task period is
required until the data is stored in the memory area of the Controller. Therefore, the input ON
response time is obtained as shown below.
Input ON response time = Input device delay time + Controller task period
(2) Send Data Processing Time
This is the time until the variables in the Controller are transferred to the built-in EtherNet/IP port.
Data is transferred during task processing. Therefore, the time required for send data processing is
the same as the task period. If the data that is transferred is larger than the amount of data that can
be sent during a single task (as set in the variable access time for the task), the data is transferred
over multiple task periods. Therefore, add (task period
×
the number of transfers) to the time
required. For details on how to determine the time required to send data, refer to 13-3-2 Built-in Eth-
erNet/IP Port Data Processing Time .
(3) Packet Interval (RPI)
This is the communications refresh period set for each connection using the Network Configurator.
13-3-4 Maximum Tag Data Link I/O Response Time
Example of data transfer processing over 3 task periods
(1) (2)
(3)
Output
device
Input device
Transmission
path
Task period
Controller #2
processing
Tag data link
refresh period
Task period
Input
(4) Network transmission delay time
(1) Input ON
response time
(6) Output ON
response time
(5) Receive Data
Processing Time
(2) Send data
processing time
Data link processing (system
common processing 2)
Motion control
User program execution
I/O refreshing
Tag data link I/O response time
(3) RPI
Controller
#1
Controller
#2
Output
Example: Primary periodic task
Tag data link service
OI UP
G
MC OI UP
G
MC OI UP
G
MC OI UP
G
MC
OI UP
G
MC OI UP
G
MC OI UP
G
MC OI UP
G
MC OI UP
G
MC
MC
OI
UPG
OI UP
G
MC
Controller #1 processing
Tag data link service