Link Refresh - Mitsubishi Electric RD77GF8 User Manual

Link refresh

This function automatically transfers data between the link devices of the Simple Motion module and the devices of the CPU
module.
CPU module
Device
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" under "Basic Settings".
(2)
(1)
Shortening the link refresh time and transmission delay time
The link refresh time and transmission delay time can be shortened by reducing the number of link refresh points to the CPU
module. The following methods can be used to reduce the number of the link refresh points.
• In "Refresh Settings" under "Basic Settings", set only the link devices used in the CPU module as the link refresh range.
(Page 70 Refresh Settings)
• Directly access infrequently used link devices from the program, and remove the corresponding settings from the link
refresh range. (Page 23 Direct access to link devices)
Setting method
The link refresh is assigned in "Refresh Settings" under "Basic Settings". (Page 70 Refresh Settings)
Simple Motion module
Link device
RX
RY
RWr
RWw
CPU module
Device
Link refresh
Link refresh
Link refresh
(1) Range set in "Refresh Settings" under "Basic
Simple Motion
Settings"
module
(2) Actual link refresh range
Link device
(3) Range set in "Network Configuration Settings"
under "Basic Settings"
(3)
Empty
Empty
1 FUNCTIONS
21
1.3 Cyclic Transmission
1