Omron CP1E CPU UNIT SOFTWARE - Backing up Memory; CPU Unit Memory Configuration

3-5
3 CPU Unit Operation
CP1E CPU Unit Software User’s Manual(W480)
3-2 Backing Up Memory
3
3-2-1 CPU Unit Memory Configuration
3-2 Backing Up Memory
This section describes backing up the CP1E CPU Unit memory areas.
Data backup to the CP1E CPU Unit’s built-in RAM memory describes as below.
 Ladder programs and PLC Setup
Automatically backed up to the built-in EEPROM whenever changed.
 DM Area in the I/O memory
Data in specified words of the DM Area can be backed up to the built-in EEPROM by using bits in
the Auxiliary Area. Other words are not backed up.
 Other areas in the I/O memory (including Holding Area data, Counter PVs,
and Counter Completion Flags)
Not backed up to the built-in EEPROM.
3-2-1 CPU Unit Memory Configuration
Ladder programs
CP1E CPU Unit
Built-in EEPROM
backup memory
Parameter Area
PLC Setup
Parameter Area
PLC Setup
· DM Area
PLC power turned ON
Operation using control
bits in Auxiliary Area
PLC power turned ON
PLC power turned ON
PLC Setup changed
Changing program
Built-in RAM
I/O Memory Areas
· I/O Area
· Work Area
· Holding Area
· Auxiliary Area
· Timer/Counter
Areas
Part of DM Area
Ladder programs