7-1
Section
Overview
140
7-1
Overview
The Ethernet Unit supports the server functions of FTP (file transfer protocol), a
standard protocol in TCP/IP. A host computer functioning as an FTP client on the
Ethernet can read or write individual files in a Memory Card mounted to the CPU
Unit or in EM file memory.
Only one FTP client can connect at the same time.
Ethernet network
Disk
Memory Card
EM file
memory
Note The PC, however, is unable to read or write files at other nodes using FTP be-
cause the Ethernet Unit does not support FTP client functions.
File System
The file system in the CPU Unit that can be accessed by the Ethernet Unit in-
cludes files in any Memory Card mounted in the CPU Unit and files in EM file
memory. The directory tree is shown below.
/:
root
MEMCARD
Memory card directory
EM
EM file memory directory
A connection will be initially made to the root directory.
Note
1. The date of the MEMCARD directory displayed for
ls
or
dir
commands in
the root directory will be the date of the file system volume label.
2. The login date will be displayed for EM files and for MEMCARD if a volume
label has not been created.
Connecting to the FTP Server
The host computer must connect to the FTP server before the FTP server func-
tions can be used. The login name and password set in the CPU Bus Unit Setup
will be used when connecting (Refer to 4-2 CPU Bus Unit System Setup.)
The FTP server in the Ethernet Unit can connect to only one client at a time. If a
client attempts to connect when the FTP server is in use, a message will be re-
turned and connection will be refused.
Login Messages
Status
Message
Normal
connection
2
20 xxx.xx.xx.xx CS1W-ETN01 FTP server
(FTP Version y–yy) ready.
xxx.xx.xx.xx: IP address of Ethernet Unit
y.yy:
Firmware version of Ethernet Unit
FTP server
busy
221 FTP server busy, Goodbye.
