Sena LS100 User Manual download pdf (Page 33)

 Cyclic Connection

It Cyclic Connection function is enabled, the LS100 will make an attempt to connect to the user-

defined remote host at certain interval even if there’s no incoming serial data from the device. If

the remote host prepares certain data, it will be transferred to the serial device via its serial port

after the connection is established. Eventually, users can monitor the serial device periodically by

making the remote host send the serial command to the LS100 whenever it is connected to the

remote host. This option is useful when users need to gather the device information periodically

even if the serial device does not send its data periodically. Figure 4-3 shows the State Transition

Diagram of the session operations in TCP client mode.

Established

Closed

Data

Incoming data via

serial port

Inactivity time-out

TCP connection request rejected

internal TCP timer is expired

TCP connection request accepted

Sync-Sent

Incoming data via

serial port

Incoming data

from remote host

Incoming TCP

disconnection request

Cyclic connection

interval time-out

Figure 4-3 State Transition Diagram of TCP client mode

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 47 48

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Sena LS100 User Manual Page 33