3 CPU MODULE MEMORY CONFIGURATION
3.4 Memory Operation
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3.4 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 function. Check that the following function is not being
executed and then initialize the memory.
• CPU module 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, 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, and
latch 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.
SD memory card Deletes all the folders and files in the SD memory card.
Clear value (when CPU
built-in memory is
selected)
Device,
Label
Zero clear Excluding devices and labels with latch specified, clears the following to zero: X, Y, M, L, B,
F, SB, S, T, ST, C, LC, D, W, SW, Z, LZ, R, 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, L, B,
F, SB, S, T, ST, C, LC, D, W, SW, Z, LZ, R, and all labels (including module labels).
Clear value (when SD memory card is selected) Initializes all extended file registers (ER) with FFFFH.
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