3 Nomenclature and Functions
3-6
CJ2 CPU Unit Hardware User’s Manual
*1 This operation is given priority over automatic transfer at startup (pin 2 set to ON).
Note After reading data from the Memory Card to the CPU Unit using the simple backup operation, the CPU Unit
will remain in PROGRAM mode and no operations in any other mode will be possible. To switch to RUN or
MONITOR mode, turn OFF the power, turn OFF pin 7, turn the power back ON, and use a Programming
Device to change the operating mode.
Table 2
Simple backup type
DIP Switch
Required operation
SW7
Backing up all PLC data on the Memory Card: ON Press the Memory Card
Power Supply Switch for
3s.
Restoring all PLC data from the Memory Card: Turn ON the power to
the PLC.
*1
Comparing the Memory Card and the CPU Unit: OFF Press the Memory Card
Power Supply Switch for
3 s.
All PLC data
Memory Card
Backup
All PLC data
Memory Card
Restore
All PLC data
Memory Card
Compare
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