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Maintenance Section 7-2
7. Save the project.
Note If the comments, annotations, tags, and connection data for a project is saved
in advance to a Memory Card, then this data can be backed up.
STEP 2: Replacing
the Unit
1,2,3... 1. Turn OFF the power supply to the PLC.
2. Replace the Loop-control CPU Unit.
3. Insert the Memory Card.
4. Turn ON the power supply to the PLC.
STEP 3: Transferring
the Program
Transferring the Program,
PLC Setup, and I/O Tables
to the CPU Unit
1,2,3... 1. Start the CX-Programmer.
2. Open the new project that was saved in STEP 1.
3. Go online to the CPU Unit.
4. Select PLC - Transfer - To PLC.
5. Select all of the transfer options.
6. Click the OK Button.
Transferring the Function
Blocks to the Loop
Controller
1,2,3... 1. Start the CX-Process Tool.
2. Open the new project that was saved in STEP 1.
3. Select the LCB and then select Execution - Download - Selected.
4. Click the Option Button. Select the option to transfer tag data to compact
flash memory and then click the OK Button.
5. Click the Start Button.
7-2-4 Using the Flash Memory
Data stored in flash memory is transferred to RAM for use in actual operation
when a cold start is made.
!Caution Do not turn OFF the power supply to the PLC when data is being transferred
from RAM to flash memory. Data will not be transferred correctly if power is
interrupted or a communications error occurs before the transfer operation is
completed. If a database occurs, download the function block data gain from
the CX-Process Tool to RAM in the Loop Controller, and then transfer the con-
tents of RAM to flash memory. If, when power is turned back ON, the system
detects that a backup operation was in progress and the RAM data is normal,
the backup operation will be repeated from the beginning.
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