Omron CX-PROGRAMMER V9 Operation Manual page 14

OMRON
• The user program and parameter area data in CS1-H CPU Units is
backed up in the built-in flash memory. The BKUP indicator will light on
the front of the CPU Unit when the backup operation is in progress. Do
not turn OFF the power supply to the CPU Unit when the BKUP indicator
is lit. The data will not be backed up if power is turned OFF.
To display the status of writing to flash memory on the CX-Programmer,
place a checkmark by Display dialog to show PLC Memory Backup
Status on the PLC properties and then select Windows | PLC Memory
Backup Status from the Windows menu.
• Precaution in Changing the PLC Type
On the CX-Programmer, you can change the PLC (device) type or CPU
type. When these are changed, however, only the data for the ladder
program and the symbol tables are changed. The following data will be
initialized and must be reset.
• PLC Setup
• Expansion instructions
• I/O tables
• PLC memory
Particularly the PLC Setup has a large impact on PLC system operation.
Be careful to reset all require settings after changing the PLC type.
If expansion instruction allocations are not reset, program errors could
occur, preventing the PLC from running. Always restore the expansion
instruction allocates to the previous settings after changing the PLC
type.
CX-Programmer – Operation Manual
CX-Programmer_Page (
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