Mitsubishi Electric Q01UCPU User Manual page 287

(f) The Special relay and special register which request function operations
Before executing backup, turn off the special relay and special register which request operating of the functions
such as SM801 (Trace start). If backup is executed while they are ON, the corresponding requests may be
turned on and the functions are executed when the data of the special relay and special register are restored.
(g) Data protected by security functions
Data protected by the following security functions cannot be backup up.
• File password 32
If a file with a file password is in the backup target data, the backup cannot be performed.
• File access control by security key
If the CPU module is locked, the backup cannot be performed.
(h) When a backup is executed with the upper limit value setting for the number of
backup data being valid
Check if there is enough free space in the SD memory card used before start of backup.
CHAPTER 3 FUNCTIONS
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