Setting File Registers; Clearing File Registers - Mitsubishi Electric MELSEC iQ-R Series User Manual

Setting file registers

This section describes the settings required to use the file registers.
Configuration procedure
This section describes the procedure to use the file registers.
1.
Set the file register usage with [CPU Parameter].
2.
To use the file register for each program, previously create the device memory which will become the file register file.
( GX Works3 Operating Manual)
3.
When using the file registers, which are common for all programs, a file register file with the name and capacity set in the
file register setting is created.
*1 If the capacity is not set, it must be set when creating a file register file and writing it to the programmable controller in the same manner
as the procedure 2.
4.
Write parameters and file register files into the CPU module.
File register setting
This setting must be completed before using the file registers.
[CPU Parameter]  [File Setting]  [File Register Setting]
Window
Displayed items
Item Description
Use Or Not Specify whether or not file registers should be used.
Setting
Capacity Specify the capacity of the file register in increments of 1K
words when "Use Common File Register in All Programs" is
selected.
File name Assign a file name to the file register when "Use Common File
Register in All Programs" is selected.

Clearing file registers

To clear the file registers, use the following methods ( Page 150 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)
* 1
Setting range
• Not Use
• Use File Register of Each Program
• Use Common File Register in All Programs
This value depends on whether or not the extended
SRAM cassette is mounted and its capacity. (
Page 143 The setting range of the capacity of each
area)
1 to 60 characters
27.9 File Register (R/ZR)
27
Default
Not Use


27 DEVICES
481