4 Ethernet module User’s Manual
Chapter 1 Ethernet Module (EN311) Overview
1
1.4 Basic Functionality
The EN311 has the following main features.
(1) T series computer link protocol transmission (slave station)
The host machine can upload or download user programs, execute control
commands, and read or write register data to an S controller on the 10BASE5/2 LAN
using the T series computer link protocol.
This function can be used simply by making basic settings on the EN311 from the S
controller; there is no need to write special user programs for the S controller.
Computer link protocol uses UDP/IP as the transmission protocol.
UDP/IP: User datagram protocol/Internet protocol.
Figure 1-2 T Series Computer Link Protocol Transmission (slave station)
S controller
operating system
Host machine
PC
Workstation
Response
Request
Application
program
/10BASE2
User program
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