SENA LS100W User Manual
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2) Operations
Serial data transfer
When a session has been established, the LS100W reads the data from the serial port buffer till
internal serial buffer is full or inter-character time interval reaches the time specified as inter-
character timeout value. Then, it transfers the data to the IP address of the remote host. If there’s
no remote host connected to the LS100W, all the incoming data from the serial port are discarded.
Session disconnection
The connected session will be disconnected when the remote host sends disconnection request
or when no data transfer activity is found through the serial port for a certain amount of time,
which is “Inactivity timeout”.
Figure 5-1 shows the State Transition Diagram of the session operations in TCP server mode.
Closed
Established
Listen
Data
Incoming TCP connection request
Inactivity time-out
Incoming TCP
disconnection request
Incoming data via serial port
Incoming data
from remote host
Sync-Recvd
Accept
Reject
Figure 5-1. State Transition Diagram of TCP server mode