Transferring Data From A Programming Device; Backup - Omron CP1E CPU UNIT SOFTWARE User Manual

2 Internal Memory in the CPU Unit
2-1-3

Transferring Data from a Programming Device

Data that has been created using the CX-Programmer is transferred to the internal memory in the CPU
Unit as shown in the following diagram.
CX-Programmer
User-created Programs
User programs
Symbol Table
Comments and
program index
PLC Setup
PLC Memory
CIO Area, Work Area, Holding
Area, Timer Area, Counter
Area, DM Area, and Auxiliary
Area
2-1-4

Backup

The CPU Unit will access the backup memory in the following process.
• The program or PLC Setup are transferred from the CX-Programmer.
• The program is changed during online editing.
• DM backup is operated by the Auxiliary Area.
During these processes, BKUP LED will light, indicating that the CX-Programmer is being backed up.
There are the following limitations during backup.
• The operation mode cannot be switched from PROGRAM mode to MONITOR/RUN mode.
• If the power is interrupted when the program or PLC Setup are being backed up, memory error may
occur the next time power is turned ON.
• If the power is interrupted when the DM area is being backed up, the reading of backed up DM area
will fail the next time power is turned ON.
2-4
CPU Unit
User Program Area
User programs
Symbol Table
Comments and
program index
Parameter Area
PLC Setup
I/O Memory Areas
· The CX-Programmer can be
used to set status in each I/O
memory area and to write data
to the I/O memory areas.
CP1E CPU Unit Software User's Manual(W480)