Senatek LS100 manual Sync-Recvd Listen

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

Sync-Recvd

Listen

AcceptReject

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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