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All Rights Reserved. Copyright © 2000, Yokogawa Electric Corporation
TI 04L01A01-02E
3.4
Standard Communication Function (Ethernet)
Ethernet is included as standard on the DX Series.
Data that are being measured on the DX Series can be monitored via network. You can also transfer the
data in the memory or on the removable storage medium via network by using the FTP client and server
functions.
3.4.1
Standard Specifications
Basic Specifications
Electrical and mechanical specifications : Conforms to IEEE802.3
(DIX specification for Ethernet frames)
Transfer method
: 10Base-T
Protocol
: TCP, UDP, IP, ARP, and ICMP
Communication protocol
The DX Series is capable of using the TCP/IP protocol.
For upper layer protocols, it supports FTP for file transferring, and YOKOGAWA's proprietary protocol
for monitoring.
OSI 7 Layers
DX Ethernet communications
7
Application layer
FTP
client
FTP
server
Common service
Maintenance and
testing services
6
Presentation layer
5
Session layer
FTP
DX dedicated protocol
Device information
service
4
Transport layer
TCP
3
Network layer
IP/ICMP
2
Data link layer
CSMA/CD
1
Physical layer
Baseband 10 Mbps
OSI
：
Open Systems Interconnection
FTP
：
File Transfer Protocol
TCP
：
Transmission Control Protocol
UDP
：
User Datagram Protocol
IP
：
Internet protocol
ICMP
：
Internet Control Message Protocol
CSMA/CD
：
Carrier Sense Multiple Access with Collision Detection
Security
There are two user levels: administrator and user level. You can restrict the number of connections to
the services and the executable commands by specifying the levels.
Level
Maximum number of registrations
Rights
Administrator
1
All operations are allowed.
User
6
Restrictions on some operations such as
configuration and control.
