Omron CJ1G-CPU series, Programming Manual

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218
Manipulating Files Section 5-2
status of I/O memory data will be maintained when data is read from the
Memory Card.
If the Forced Status Hold Bit (A50013) is ON and the PLC Setup is set to
maintain the Forced Status Hold Bit Status at Startup when the backup
files are written, the status of force-set and force-reset bits will be main-
tained when data is read from the Memory Card.
4. A CS1-H, CJ1-H, or CJ1M CPU Unit will remain in PROGRAM mode after
the simple backup operation has been performed and cannot be changed
to MONITOR or RUN mode until the power supply has been cycled. After
completing the backup operation, turn OFF the power supply to the CPU
Unit, changes the settings of pin 7, and then turn the power supply back
ON.
Comparing Data in the Memory Card and CPU Unit
To compare the backup files in the Memory Card with the data in the CPU
Unit, turn OFF pin 7 on the CPU Unit’s DIP switch, and press and hold the
Memory Card Power Supply Switch for three seconds. The backup function
will compare the program, parameter area data, and I/O memory data in the
Memory Card with the corresponding data in the CPU Unit. This function can
be executed in any operating mode.
The following table provides a summary of the simple backup operations.
Note 1. Refer to Verifying Backup Operations with Indicators on page 221 for de-
tails on the results of read, write, and compare operations.
2. Refer to 5-3-2 Operating Procedures for Memory Cards for guidelines on
the time required for Memory Card backup operations.
Backing up data to the Memory Card
Memory Card
Power Switch CPU Unit
Program
I/O memory
Parameter
area
Pin 7: ON
Restoring data from the Memory Card
Power ON
CPU Unit
Program
I/O memory
Parameter
area
Pin 7: ON
Comparing data to the Memory Card
Memory Card
Power Switch CPU Unit
Program
I/O memory
Parameter
area
Pin 7: OFF
Memory
Card Memory
Card Memory
Card
Compare
Backup operation Pin
status
Procedure
Pin 7
Backing up data from the CPU
Unit to the Memory Card ON Press and hold the Memory Card
Power Switch for three seconds.
Restoring data from the Memory
Card to the CPU Unit ON Turn the PLC OFF and ON again.
(See note 1.)
Comparing data between the
CPU Unit and the Memory Card OFF Press and hold the Memory Card
Power Switch for three seconds.