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File Memory Section 5-1
5-1-3 Description of File Operating Procedures
The following table summarizes the 6 methods that can be used to read and
write files.
Read: Transfers files from file memory to the CPU Unit.
Write: Transfers files from the CPU Unit to file memory.
OK: Possible; ---: Not possible
Note 1. FINS commands for file memory operations can be sent from host comput-
ers connected via a Host Link, another PLC connected to a network (using
CMND(490)), or the local PLC’s program (using CMND(490)). (For CS-se-
ries CS1 CPU Units that are pre-EV1, file memory operations cannot be
executed using CMND(490) in the same CPU Unit for which the file mem-
ory operations are being performed.
2. Other Operations: Format file memory, read file data, write file data,
change file name, read file memory data, delete file, copy file, create sub-
directory, and change file name.
Operating procedure Medium Description Entire
program
Data
Area
data
(See
note 3.)
Parame-
ter Area
data
Symbol
tables, com-
ment files,
program
index files
(See note 6.)
Unit/
Board
backup
files
Program-
ming Device
CX-Program-
mer or Pro-
gramming
Console
Memory
Card
EM file
memory
Read OK OK OK --- ---
Write OK OK OK --- ---
Other operations
(See note 2.)
OK OK OK --- ---
CX-Program-
mer only
Memory
Card
EM file
memory,
comment
memory
Read --- --- --- OK ---
Write --- --- --- OK
(See note 6.)
---
Other operations
(See note 2.)
--- --- --- --- ---
FINS command
(See note 1.)
Memory
Card
EM file
memory
Read OK OK OK --- ---
Write OK OK OK --- ---
Other operations
(See note 2.)
OK
(See
note 4.)
OK OK --- ---
FREAD(700) and
FWRIT(701) Instructions
Memory
Card
EM file
memory
Read data from
one file.
--- OK --- --- ---
Write data to one
file.
--- OK --- --- ---
Auxiliary Area control bit
operation replaces the
entire program during oper-
ation.
(Not supported by CS-
series CS1 CPU Units that
are pre-EV1)
Memory
Card
Read OK --- --- --- ---
Automatic Transfer at Star-
tup
Memory
Card
Read OK OK OK --- ---
Write --- --- --- --- ---
Backup operation
(Not supported by CS-
series CS1 CPU Units that
are pre-EV1)
Memory
Card
Read OK OK OK OK OK
Write OK OK OK OK
(See note 6.)
OK
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