This section describes the flow from the establishment of connection to end of communication.
Passive open, the server
will wait for an open request
from the client.
Wait at least 500ms or more before executing the open processing again after the close request is sent from
the external device to the Ethernet-equipped module.
When the client sends
an Active open request
and the server accepts it,
a connection is established
between the client and the
The client requests data
sending and sends data.
The client receives the response
to the data.
The client receives data and sends
back the response to the data.
The packet to stop communications is
exchanged then the connection is
Appendix 5 TCP/IP Communications, UDP/IP Communications