Link Refresh - Mitsubishi Electric MELSEC iQ-R Series User Manual

Link refresh

Automatically transfers data between a device in the CC-Link IE TSN Plus module and a device in a CPU module.
CPU module
SB Link refresh
SW Link refresh
X Link refresh
Link refresh
Y
W Link refresh
W Link refresh
B Link refresh
W Link refresh
Concept of the link refresh range (number of points)
The link refresh is performed to the area set in "Refresh Settings" under "Basic Settings" and also specified in "Network
Configuration Settings".
(2)
(1)
(1) Range set in "Refresh Settings" under "Basic Settings"
(2) Actual link refresh range
(3) Range set in "Network Configuration Settings" under "Basic Settings"
Shortening the transmission delay time
The transmission delay time can be shortened by reducing the number of link refresh points and shortening a communication
cycle interval. ( Page 526 Communication cycle intervals)
The following methods can be used to reduce the number of link refresh points.
• In "Refresh Settings" under "Basic Settings", set only the link devices frequently used in the CPU module as the link refresh
range. ( Page 77 Refresh Setting)
• Remove infrequently used link devices in the CPU module from the link refresh range, and directly read or write the
corresponding data from the program by direct access. ( Page 155 Direct access to link devices)
Link refresh is performed in END processing of the sequence scan of the CPU module.
Setting method
The link refresh is assigned in "Refresh Settings" under "Basic Settings". ( Page 77 Refresh Setting)
CC-Link IE TSN
Plus module
SB
SW
RX
RY
RWr
RWw
LB
LW
CPU module
Link refresh
Link refresh
Link refresh
CC-Link IE TSN
Plus module
(3)
Empty
Empty
9 FUNCTIONS
153
9.2 Cyclic Transmission
9