Procedure - Omron CP1E CPU UNIT SOFTWARE User Manual

16 Other Functions

16-3-2 Procedure

Perform the following procedure to save the DM data to the built-in EEPROM backup memory during
operation or while stopped.
1
Check the Restore D0- from backup memory Check Box in the Startup Data Read Area of the
PLC Setup from the CX-Programmer.
Also, set the number of words to be backed up starting from D0 in the Number of CH of DM for
backup Box. Transfer the PLC Setup to the CPU Unit and turn ON the power supply.
2
Turn ON A751.15 (DM Backup Save Start Bit) from the CX-Programmer, a Programmable Ter-
minal (PT), or a ladder program.
The specified number of words in the DM Area starting from D0 will be backed up to the built-in
EEPROM backup memory.
• Using a Ladder Program
Execution condition
DM Backup Save
Start Bit
(A715.15)
DM Backup Save
Flag
(A751.14)
When the saving operation has been completed, A751.14 (DM Backup Save Flag) will turn OFF.
16-10
A751.15
DM Backup Save
Start Bit
One cycle
ON
OFF
ON
OFF
Backup started
Execution Bit is turned ON to start backup.
Backup finished
CP1E CPU Unit Software User's Manual(W480)