48
Established
Inactivity time-out
TCP connection request rejected
Or internal TCP time-out
TCP connection request accepted
Sync-Sent
Incoming data via serial port
Incoming data
from remote host
In-coming TCP Close request
Listen
Incoming TCP connection request
Incoming data via serial port
Sync-Recvd
Reject
Accept
Closed
Data
Figure 4-5 State Transition Diagram of TCP mode
4.2.3.2. UDP Mode
The UDP mode operation is similar to that of TCP mode except that it is based on UDP protocol and
only one pre-defined remote host is able to communicate with the Pro Series. Users do not have to
configure cyclic connection, since UDP is a connectionless protocol.
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