Memory Operation; Initialization And Value Clear - Mitsubishi Electric MELSEC iQ-R Series User Manual

10.3

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
Items to be specified in the engineering tool
Initialization Data memory
Device/label memory
SD memory card
Value clear Device, label
File register
Device / label / file register latch clear
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.
10 MEMORY CONFIGURATION OF THE CPU MODULE
150
10.3 Memory Operation
Zero clear
Zero clear (including Latches (1) and (2))
Zero clear All files
File specification
Zero clear excluding Latch (2)
Target
Deletes all the folders and files in the program memory and data memory.
Deletes all the files in the file storage areas in the device/label memory.
Deletes all the folders and files in the SD memory card.
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).
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).
Clears the contents of all the file registers to zero.
Clears only the contents of the specified file register(s) to zero.
Clears the file registers other than Latch (2) to zero.
Clears devices, labels, and file registers other than Latch (2) to zero.