102 Ethernet module User’s Manual
Chapter 6 Socket Interface Communication
6
6.4 Using the EN311 Socket Interface
This section describes the requests used by user programs to use UDP and TCP
sockets. There are eight types of request as listed below.
• UDP socket (open request, send request, receive request, close request)
• TCP socket (open request, send request, receive request, close request)
Even when performing transmission by using the socket, it is necessary to set the
module of the EN311 in the same manner as the computer link/PC link procedure
transmission.
Caution
• Make sure to understand the contents of this chapter thoroughly before writing programs that
use the EN311. The sample programs present basic examples of EN311 usage, and should
be reviewed carefully before using them in an actual system.
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