Comment Memory - Omron CJ2 - 02-2010 User Manual

10 CPU Unit Functions

10-5-3 Comment Memory

A comment memory is provided within the CPU Unit's internal backup memory. The following com-
ment/section data can be stored in and read from comment memory even if neither Memory Card nor
EM file memory are available.
• Symbol table files (including CX-Programmer symbols and I/O comments, but not network symbols)
• Comment files (CX-Programmer rung comments and other comments)
• Program index files (CX-Programmer section names, section comments, and program comments)
CX-Programmer
Transfer
When downloading projects, either of the following storage locations can be selected as the transfer
destination for comment data and section data.
• Comment memory (in CPU Unit's backup flash memory)
• Memory Card
• EM file memory
The following files stored in comment memory can be backed up to a Memory Card when a simple
backup operation is executed, or the files can be restored to comment memory from the Memory Card.
• Symbol table files (including CX-Programmer symbols and I/O comments, but not network symbols)
• Comment files (CX-Programmer rung comments and other comments)
• Program index files (CX-Programmer section names, section comments, and program comments)
CPU Unit
SYSMAC
CJ2H RUN
ERR/ ALM
CPU64-EIP INH
PROGRAMMABLE PRPHL
CONTROLLER
COMM
BKUP
OPEN
MCPWR
BUSY
PERIPHERAL
PORT
This enables backup/restoration of all data in the CPU Unit including I/O comments if an error occurs or
when adding a CPU Unit with the same specifications without requiring the CX-Programmer.
10-42
Comment and section data can be stored in the CPU Unit
when downloading projects.
Project
Symbol table file
(except network symbols)
Comment file
Program index file
Comment and section data can be stored in this area.
User program
Parameters
I/O memory
IC101
MS IC101
NS IC101
COMM OUT
100M OUT OUT
10M
(In comment memory)
• Symbol table file
(except network symbols)
• Comment file
• Program index file
These files can also be backed up
using a simple backup.
CPU Unit
EM file memory
Memory Card
Comment
memory
CJ2 CPU Unit Software User's Manual
Memory Card