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1 overview, Overview, Specifications – Omron CS CJ1W-ETN21 User Manual

Page 92: 1-1 specifications

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68

Overview

Section 4-1

4-1

Overview

The Ethernet Unit has a built-in FTP (File Transfer Protocol) server function,
so other computers on the Ethernet can read or write (upload/download) large
files in the EM file memory by executing FTP commands from the FTP client
software.

Note Only one FTP client can connect at the same time.

4-1-1

Specifications

Note The PLC, however, is unable to read or write files at other nodes using FTP

because the Ethernet Unit does not support FTP client functions.

Item

Specification

Executable com-
mands

open

:

Connects the specified host FTP server.

user

:

Specifies user name for the remote FTP server.

ls

:

Displays the Memory Card file names.

dir

:

Display the Memory Card file names and details.

rename

: Changes a file name.

mkdir

:

Creates a new directory in the working directory in the remote host.

rmdir

:

Deletes a new directory from the working directory in the remote host.

cd

:

Changes the Ethernet Unit work directory to the specified directory.

cdup

:

Changes the working directory at the remote host to the parent directory.

pwd

:

Displays the Ethernet Unit work directory.

type

:

Specifies the data type of transferred files.

get

:

Transfers the specified file from the Memory Card to the local host.

mget

:

Transfers multiple files from the Memory Card to the local host.

put

:

Transfers the specified local file to the Memory Card.

mput

:

Transfers multiple local files to the Memory Card.

delete

: Deletes the specified file from the Memory Card.

mdelete

: Deletes multiple files from the Memory Card.

close

:

Disconnects the FTP server.

bye

:

Closes the FTP (client).

quit

:

Closes the FTP (client).

Protection

FTP login name consists of 12 letters max. CONFIDENTIAL is the default login name.

Password consists of 8 characters max.

Protocol

FTP (port number: 21/TCP)

Number of connec-
tions

1

Ethernet Unit

Ethernet

FTP client

Intranet

Large file

Upload

Download

Specify the file and upload or download
using FTP commands such as get and put.

Files in the EM File Memory or the
Memory Card mounted to the CPU
Unit.