Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 96

CPU Units
Note
60
CPU Unit
Flash Memory
User program
Written
automatically
Written
automatically
Parameter Area
1. The Parameter Area stores system information for the CPU Unit, such as
the PLC Setup.
2. Part of the EM (Extended Data Memory) Area can be converted to file
memory to handle data files and program files in RAM memory format,
which has the same format as Memory Cards. File memory in the EM Area
is backed up by a battery.
Built-in RAM
I/O Memory Area
Backup
The battery life is 5 years at an
Drive 1: EM file ambient temperature of 25 C.
memory (See note 2.)
User program
Drive 0: Memory
Card
(flash memory)
Parameter Area
(See note 1.)
File memory
Automatically backed up to flash memory whenever
a write operation for the user program or parameter
area is performed from a Programming Device.
Section 2-4
Battery