NPort W2150A-W4/W2250A-W4 Series User Manual
67
Settings for RFC2217 Mode
When
Operation Mode
is set to
RFC2217
on a serial port’s
Operation Modes
page, you will configure
additional settings, including
TCP alive check time
,
TCP port
,
Packet length, Delimiter 1, Delimiter 2,
Delimiter process,
and
Force transmit.
TCP alive check time
Default
7 min
Options
0 to 99 min
Description
This field specifies how long the NPort will wait for a response to “keep-alive” packets
before closing the TCP connection. The NPort checks connection status by sending periodic
“keep-alive” packets.
0: The TCP connection will remain open even if there is no response to the “keep-alive”
packets.
1 to 99: If the remote host does not respond to the packet within the specified time, the
NPort will force the existing TCP connection to close.
TCP port
Default
4001
Options
Description
This field specifies the TCP port number that the serial port will use to listen to connections,
and that other devices must use to contact the serial port.
Packet length
Default
0
Options
0 to 1024
Description
This field specifies the maximum amount of data that is allowed to accumulate in the serial
port buffer before sending.
0: Packet length is disregarded and data in the buffer will be sent as specified by the
delimiter settings or when the buffer is full.
1 to 1024: Data in the buffer will be sent as soon it reaches the specified length.
