Mitsubishi Electric L02SCPU User's Manual And Reference page 192

(4) Causes of a backup error
If backup was not completed, a diagnostic error is not detected. In that case, the error cause is stored in SD689
and the error response is returned to the programming tool.
SD689 Error
(Backup error response
factor) value number
*1 *2
100 41FE
H H
200

H
300 
H
400 
H
500

H
503 
H
504

H
510

H
*1 *2
600 4335
H H
*1 *2
601 410A
H H
*1 *2
602 4336
H H
*1 *2
603 4276
H H
*1 *2
605 433A
H H
*1 *2
606 4904
H H
*3

4082 , 4330
H
*2

4333
H
*1 *2
607 4800
H H
*1 *2
608 433D
H H
*1 *2
701 4426
H H
*1 Only when data are backed up using contacts
*2 Only when data are backed up by remote operation
*3 When data are backed up from another boot source
*4 When data are backed up from the same boot source
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• Backup started without an SD memory card inserted or without the SD memory card lock switch slid down.
• Backup preparation or backup started while an SD memory card is disabled by SM606 (SD memory card forced
disable instruction).
Size of data to be backed up exceeds the capacity of the SD memory card inserted.
Write protection has been set to the SD memory card.
Writing data to the SD memory card has failed.
Reading data from a drive storing backup data was not completed. (program memory read error)
Reading data from a drive storing backup data was not completed. (standard RAM read error)
Reading data from a drive storing backup data was not completed. (standard ROM read error)
Reading data from a drive storing backup data was not completed. (system data read error)
Backup preparation started while latch data were being backed up to the standard ROM.
Backup preparation started while data were being written in the RUN status.
Backup preparation started with an FTP client connected to and communicated with the CPU module.
Backup preparation started while the data logging function was being executed.
Backup preparation started while the project data batch save/load function was being executed.
Backup preparation started while any specified file or folder was being deleted using a display unit.
*4
Backup preparation or backup started while another backup was in execution.
H
Backup started while the CPU module was in "Before backup start" (SD690 = 0).
Backup preparation started while the iQ Sensor Solution function (data backup/restoration) was being executed.
Backup preparation started while the file transfer function (FTP client) was being executed.
Backup preparation started when a block password for which "Execution Program Protection Setting" was enabled
was set.
Error cause