Sena HelloDevice LS100 User Manual page 30

Serial data transfer
When a session has been established, the LS100 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 LS100, 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 4-1 shows the State Transition Diagram of the session operations in TCP server mode.
Incoming TCP connection request
Listen
Sync-Recvd
Accept Reject
Closed
Established
Incoming TCP
Inactivity time-out
disconnection request
Incoming data
from remote host
Incoming data via serial port
Data
Figure 4-1. State Transition Diagram of TCP server mode
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