6 Ethernet module User’s Manual
Chapter 1 Ethernet Module (EN311) Overview
1
(3) Socket interface support
This is a standard communications technique used on engineering workstations
(EWS) and similar computers. Transmission between user programs on the S
controller and host machines is possible using the socket interface.
There are eight sockets on an EN311 and the transmission protocol (TCP/IP or UDP/
IP) can be specified for each socket.
TCP/IP: Transmission Control Protocol/Internet Protocol
UDP/IP: User Datagram Protocol/Internet Protocol
Figure 1-4 Socket Interface
Host machine
PC
Workstation
Application
program
EN311
S controller
User program
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