Omron CJ - 09-2009 Operation Manual page 194

CPU Units
CJ1-H or CJ1M CPU Unit
Flash memory
(CJ1-H and CJ1M
CPU Units only)
User program
Parameter Area
Comment memory area
FB source memory area
Note
146
Built-in RAM
I/O Memory Area
Drive 1: EM file
memory (See note 2.)
User program
Auto
write
Auto
write
Parameter Area
(See note 1.)
1. The Parameter Area stores system information for the CPU Unit, such as
the PLC Setup. An attempt to access the Parameter Area by an instruction
will generate an illegal access error.
CJ1 CPU Unit
Built-in RAM
I/O Memory Area
Backup
The battery life is 5
years at an ambient
Drive 1: EM file
memory (See note 2.)
temperature of 25°C.
User program
Drive 0: Memory
Card
(flash memory)
Parameter Area
(See note 1.)
Backup
Battery
The battery life is 5 years at an
ambient temperature of 25°C.
Drive 0: Memory
Card
(flash memory)
File memory
Automatically backed up to flash memory whenever a write
operation for the user memory area (user program or parameter
area) is performed from a Programming Device.
Used to store symbol table files, comment files, and program
index files. CPU Units with unit version 3.0 or later, Memory
Card, EM file memory, or comment memory can be selected as
the destination when transferring projects from CX-Programmer
Ver. 5.0.
For CPU Units with unit version 3.0 or later, when transferring
projects containing function blocks from the CX-Programmer,
the function block program information is automatically stored
in the FB program memory area.
Section 3-1
Battery
File memory