Chapter 1 Overview Of The Communication Functions; Relationship Between The Communication Function And The Ethernet And Serial Interfaces - YOKOGAWA XL100 User Manual

Chapter 1 Overview of the Communication Functions

1.1 Relationship between the Communication
Function and the Ethernet and Serial Interfaces
Application
Upper layer protocol
Lower layer
protocol
Upper interface
Lower interface
IM XL100C-E
The XL100 comes standard with an Ethernet interface for connecting a LAN cable and a
serial interface (RS-232/RS-485 and USB). To use the communication function of the
XL100, the Ethernet or serial communication settings must be configured in advance.
The following figure shows the relationship between the communication function of the
XL100 and the Ethernet and serial interfaces.
Setting/Measurement
server
MODBUS MODBUS
slave master
Serial
MODBUS protocol
communication
control
Serial
RS-232/RS-485
To use the communication function of the XL100 via the Ethernet or serial interface,
communications must be performed according to the following protocols* that lie in
between two.
• FTP (File Transfer Protocol)
• TCP (Transmission Control Protocol)
• IP (Internet Protocol)
• HTTP (Hyper Text Transfer Protocol)
• SMTP (Simple Mail Transfer Protocol)
• XL100 standard protocol (dedicated protocol)
To use the serial communication function, select one of the following protocols.
• XL100 standard protocol (dedicated protocol)
• Modbus protocol (slave)
• Modbus protocol (master)
XL100 communication function
Web
Maintenance/
Test server
server
Login
(User authentication/
access privileges granting)
HTTP
Standard protocol
USB
10BASE-T/100BASE-TX
FTP
server
FTP client E-mail client
FTP SMTP
TCP
IP
Ethernet
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App
Index