3onedata NP Series User Manual page 32

Interface Element
TCP Alive Time
Idle timeout
Ignore jammed
Queue access
Description
connection when the DCD signal is detected invalid.
Idle: If the idle timeout time is greater than 0, the system

will automatically shut down TCP connections that do
not have any data send and receive activity for a
specified period of time.
If no TCP activity occurs within the allotted time, the system
would send contact-probing message to check the validity of
TCP connection. If the reply packet of opposite side hasn't
been received after sending probe packet for 3 times, system
will regard the opposite side as down and forwardly close the
communication connection. If set TCP Alive Time to "0", the
function will be disable.
Set the TCP timeout for the serial server's current data
communication link. If the idle time-out during communication
is larger than 0, the system would close the TCP connection
without any data transmission activity occurring in the
specified time automatically; 0 means the free TCP connection
would not be closed automatically.
Enables or disables ignore jammed connections. Options:
Enabled: The system ignores blocked network

connections and continues to send data to other normal
network connections.
Disabled: If the network connection is blocked or the

response is lost, the system will wait until the data is
successfully sent to all network connections before
sending the next data.
Enable or disable queue access mode. Options:
Enabled: Multiple hosts can send or receive data from

the serial port at the same time. The serial server
processes the communication data in the order of FIFO
(first in, first out), prioritizes requests from the first host,
and returns the response to the first host.
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NP Series Serial Server User Manual
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