Mitsubishi Electric MELSEC iQ-R-R00CPU - Clearing File Registers; Refresh Data Register (RD); Refresh Memory Setting

21 DEVICES
21.10 Refresh Data Register (RD)
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21
Clearing file registers
To clear the file registers, use the following methods ( Page 101 Memory Operation)
• Clearing in the program: write 0 into the file register range to be cleared.
• Clearing with engineering tool: clear them using engineering tool ( GX Works3 Operating Manual)
21.10 Refresh Data Register (RD)
This device is provided for using as a refreshing target of buffer memory on the various devices, such as an intelligent function
module. Refresh Data Register (RD) is assigned into the refresh memory area. ( Page 98 Refresh memory)
Refresh memory setting
[CPU Parameter]  [Memory/Device Setting]  [Refresh Memory Setting]
Window
Displayed items
Item Description Setting range Default
Total Points Check the total number of points for the refresh data register and
the assigned area.
 1024K Point
Refresh Data Register (RD) area Set the number of points of refresh data register. 0 to 1024K points (in
one-point increments)
512K Point
Module Label Assignment Area Set the number of points for the module label assigned area. 0 to 1024K points (in
one-point increments)
512K Point
Intelligent function module CPU module
Refresh memory
Refresh
Buffer memory
Module
label-assigned
area
Refresh
data register
(RD)