8-3
8 Backup Operations
CJ2 CPU Unit Hardware User’s Manual
8-2 Using a Computer to Back Up Data
8
8-2-1 PLC Backup Tool
8-2 Using a Computer to Back Up Data
The PLC Backup Tool can be used to back up, compare, and restore data, such as programs and unit
parameters, of all the Units or of only specified Units in a PLC that is connected online.
z Applications
The PLC Backup Tool can be used for the following applications.
• Backing up all of the data from the PLC
• Comparing all of the data in the PLC with the data backed up in the computer
• Transferring all of the data to a PLC that has the same system configuration as another PLC
• Transferring data to a Unit that has been replaced, e.g., when the Unit has failed
z Applicable Units
z Applicable Data
8-2-1 PLC Backup Tool
Applicable Unit Description
CPU Unit CS/CJ/CP-series PLCs, all models and all versions
Data in the following Units is not backed up:
• Screen data for an NSJ Controller
• SYSMAC SPU Unit data
• Customizable Counter Unit data
Special I/O Units and CPU
Bus Units
Refer to the list of backup Units in the help files for the PLC Backup Tool.
Applicable Unit Description
CPU Unit User program, symbols tables, rung comments, program indices, parameters (PLC
Setup, registered I/O tables, routing tables, Ethernet settings, and all other data in
the initial setting areas), I/O memory, forced status (backup and comparison only),
and EM file memory data (backup only)
Special I/O Units and CPU
Bus Units
Parameter settings and data stored inside the Unit (e.g., programming created with
Support Software)
CJ2
Backup folder
Default name:
C\Backup\yymmdd_hhmmss
PLC Backup Tool
CPU Unit + Configuration Units
(CPU Bus Units and Special I/O Units)
Restore or Compare
Back up
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