NPort 5600 Series User’s Manual | Configuring NPort Administrator |
TCP Client Mode
TCP alive check time
Setting | Factory Default | Necessity |
0 to 99 min | 7 min | Optional |
0 min: TCP connection is not closed due to an idle TCP connection.
1 to 99 min: NPort automatically closes the TCP connection if there is no TCP activity for the given time.
Inactivity time
Setting | Factory Default | Necessity |
0 to 65535 ms | 0 ms | Optional |
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0 ms: TCP connection is not closed due to an idle serial line.
This parameter defines the maintenances status as Closed or Listen on the TCP connection. The connection is closed if there is no incoming or outgoing data through the serial port during the specific Inactivity time.
If the value of inactivity time is set to 0, the current TCP connection is maintained unless there’s no connection close request. Although the inactivity time is disabled, the NPort will check the connection status between the NPort and remote host by sending “keep alive” packets periodically. If the remote host does not respond to the packets, it treats the connection as being down unintentionally. NPort will then force the existing TCP connection to close.
ATTENTION
The Inactivity time should at least be set larger than that of Force transmit timeout. To prevent the unintended loss of data due to the session being disconnected, it is highly recommended that this value is set large enough so that the intended data transfer is completed.
