Mitsubishi Electric MELSEC iQ-R-R04CPU - Memory Operation; Initialization and Value Clear

3 MEMORY CONFIGURATION OF THE CPU MODULE
3.3 Memory Operation
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3.3 Memory Operation
Initialization and value clear
Each memory can be initialized and cleared to zero by using the engineering tool. For details on the operation method, refer
to the following.
 GX Works3 Operating Manual
If the power goes off during initialization or zero clear, the memory is left in the state of that point, and it is
necessary to re-execute the memory operation.
Memory initialization during execution of another function
No memory can be initialized during execution of the following functions. Check that the following functions are not being
executed and then initialize the memory.
• CPU module data backup/restoration function
• iQ Sensor Solution data backup/restoration function
Clearing values during execution of another function
■CPU module data backup/restoration function
During execution of the CPU module data backup/restoration function, devices, labels, file register areas, and latch areas
cannot be cleared to zero. Check that the CPU module data backup/restoration function is not being executed and then clear
devices, labels, file register areas, and latch areas to zero.
■iQ Sensor Solution data backup/restoration function
During execution of the iQ Sensor Solution data backup/restoration function, file register areas cannot be cleared to zero.
Check that the iQ Sensor Solution data backup/restoration function is not being executed and then clear file register areas to
zero.
Items to be specified in the engineering tool Target
Initialization Data memory Deletes all the folders and files in the program memory and data
memory.
Device/label memory Deletes all the files in the file storage areas in the device/label memory.
The battery-less option cassette is initialized.
SD memory card Deletes all the folders and files in the SD memory card.
Value clear Device, label Zero clear Excluding devices and labels with latch specified, clears the following to
zero: X, Y, M, B, F, SB, V, S, T, ST, LT, LST, C, LC, D, W, SW, FX, FY, FD,
Z, LZ, RD, and all labels (including module labels).
Zero clear (including Latches (1) and (2)) Including devices and labels with latch specified, clears the following to
zero: X, Y, M, B, F, SB, V, S, T, ST, LT, LST, C, LC, D, W, SW, FX, FY, FD,
Z, LZ, RD, and all labels (including module labels).
File register Zero clear All files Clears the contents of all the file registers to zero.
File specification Clears only the contents of the specified file register(s) to zero.
Zero clear excluding Latch (2) Clears the file registers other than Latch (2) to zero.
Device / label / file register latch clear Clears devices, labels, and file registers other than Latch (2) to zero.