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Using File Memory Section 5-3
Note If pin 7 is ON and pin 8 is OFF, the backup function will be enabled
and will override the automatic transfer at startup function. (Turn
OFF pins 7 and 8 for automatic transfer at startup.)
5. Insert the Memory Card into the CPU Unit.
6. Turn ON the PLC power supply to read the file.
Using FREAD(700)/FWRIT(701)/CMND(490)
1,2,3... 1. Insert a Memory Card into the CPU Unit. (Already initialized.)
2. Use FWRIT(701) to name the file in the specified area of I/O memory and
then save the file to Memory Card.
Note A Memory Card containing TXT or CSV data files can be installed
into a personal computer’s PLC card slot with an HMC-AP001
Memory Card Adapter and the data files can be read into a spread-
sheet program using standard Windows functions (Not supported
by CS-series CS1 CPU Units that are pre-EV1).
3. Use FREAD(700) to read the file from the Memory Card to I/O memory in
the CPU Unit.
Memory Card file operations can be executed by issuing FINS commands to
the local CPU Unit with CMND(490). (Not supported by CS-series CS1 CPU
Units that are pre-EV1)
Replacing the Program during Operation
1,2,3... 1. Insert a Memory Card into the CPU Unit. (Already initialized.)
2. Write the Program Password (A5A5 Hex) in A651 and the Program File
Name in A654 to A657.
3. Turn the Replacement Start Bit (A65015) from OFF to ON.
Simple Backup Function There are 3 backup operations: backing up data to the Memory Card, restor-
ing data from the Memory Card, and comparing data with the Memory Card.
Backing Up Data from the CPU Unit to the Memory Card
1,2,3... 1. Insert a Memory Card into the CPU Unit. (Already initialized.)
2. Turn ON pin 7 and turn OFF pin 8 on the CPU Unit’s DIP switch.
3. Press and hold the Memory Card Power Supply Switch for three seconds.
4. Verify that the MCPWR Indicator flashes once and then goes OFF. (Other
changes indicate that an error occurred while backing up the data.)
Restoring Data from the Memory Card to the CPU Unit
1,2,3... 1. Insert the Memory Card containing the backup files into the CPU Unit.
DIP switch pin 2 ON
Memory Card
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