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File Memory Section 5-1
Note Symbol tables (symbols, addresses, and I/O comments) can be treated as
files from the CX-Programmer.
Data transfer operations can be performed for projects from the CX-Program-
mer to transfer all of the above files (symbol table files, comment files, pro-
gram index files) between the CPU Unit and a Memory Card or between EM
file memory. (Program index file transfers are supported starting from version
2.0.) The symbol table files and comment files can also be transferred
between the CX-Programmer, computer RAM, and a data storage device with
CX-Programmer version 1.2 or later.
The CX-Programmer can also be used to save data from individual parameter
areas in files with an extension of .STD. (These files cannot be used for auto-
matic transfer at startup. All parameter areas must be save in one file to
enable automatic transfer at startup.)
File File name Extension Contents
Symbol table file SYMBOLS .SYM Global and local symbols
Comment file COMMENTS .CMT Rung comments and comments
(annotations)
Program index file PROGRAM .IDX Section names and section com-
ments
Symbol Table Files
Tables of variables used
by the CX-Programmer
Symbols, addresses, data
types, I/O comments
Comment Files
Comments used by the
CX-Programmer
Rung comments
Comments
Program Index File
Section information (used by
CX-Programmer)
Section names, section
comments
CX-Programmer
CPU Unit
User program
I/O memory
Etc.
Program files
Data files
Programming Device,
FINS commands,
ladder instructions, or
control bits
Programming Device, FINS
commands, ladder instructions, or
control bits
Program files
Data files
EM file
memory
Memory
Card
Data transfer
operations from the
CX-Programmer
Symbol files
Comment files
Program index files
When a Memory Card is
not inserted
Files That Can Be Written
from the CPU Unit
Files That Can Be Written
from the CX-Programmer
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