Mitsubishi Electric melsec q00ujcpu User Manual page 403

2) Point setting for file registers
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Example
A to C, the operation is as described below.
• During execution of program A: Accessing file register A
• During execution of program B: Accessing file register B
• During execution of program C: Accessing file register C
With some instructions, file registers set for respective programs cannot be specified.
For details, refer to the pages describing devices available for each instruction in the following manual.
QCPU Programming Manual (Common Instructions)
(c) Use the following file.
Select this when one file register is to be shared by all execution programs.
Specify "Corresponding memory", "File name", and "Capacity" and write these parameters to the CPU module
to create a file for the file register.
If the capacity is not specified, note the following.
• When the specified file register file is stored in the specified drive, the file is used. (The capacity is the
same as that of the stored file register file.)
• If the file register file with the specified file name is not found on the specified drive, "PARAMETER
ERROR" (error code: 3002) will occur.
• For use of an ATA card, "Memory card (ROM) cannot be selected for "Corresponding memory".
(File register data cannot be stored in ATA cards.)
Selecting "Memory card (ROM)"for "Corresponding memory" and writing the settings to the CPU module
will result in "PARAMETER ERROR" (error code: 3002).
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[Write to PLC] in GX Developer and set the number of file register points.
When each of file registers A to C has the same name with the corresponding one of the program
Program A execution
Program B execution
Program C execution
Figure 9.72 When the program is changed
Synchronized
File register A
RO
Synchronized
File register B
RO
Synchronized
File register C
RO