Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 324

(e) File creation timing
The following table lists the timing when an operation history file is created.
Timing
The CPU module is powered off and on.
The CPU module is reset.
The PLC memory is formatted.
An operation history file is deleted.
An operation history file name is changed.
An SD memory card is inserted.
The CPU module data backup/restoration function is
executed.
*1 The existing operation history file is deleted and a new file is created.
*2 An operation history file is created when the parameter-valid drive is the program memory or standard ROM and the SD
memory card is set as the save destination memory in the operation history setting of the PLC parameter.
When a new operation history file is created, "Operation History File Creation Information" is saved.
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• When no operation history file exists
• When an operation history file exists and the file size is changed in the operation
history setting
• When no operation history file exists
• When an operation history file exists and the file size is changed in the operation
history setting
When the PLC memory is formatted for the save destination memory of the
operation history setting of the PLC parameter
When an operation history file stored in the save destination memory set in the
operation history setting is deleted
When the name of an operation history file stored in the save destination memory
set in the operation history setting is changed
• When no operation history file exists
• When an operation history file exists and the file size is changed in the operation
*2
history setting
When a restoration, whose setting for operation after restoration is set to operate
with the initial status (b15 of SD918 is off), is executed
Description
*1
*1
*1