3onedata NP Series User Manual page 35

Interface Element
Session Number
Listen port
Idle timeout
Queue access
Response time
Frame break
Apply to all Port
Description
The number of hosts that one serial port connects to.
Each host communicates with serial port in the order of

first-in first-out;
The system supports up to 4 connections.

The network receives the listening port of UDP data. The user
must assign a unique listening port to each serial port so that
the system can normally receive UDP data.
When communicating, data communication between other
hosts and serial port server is not allowed. Once the TCP
timeout is met, the current IP address and port are released,
allowing other hosts and serial servers to communicate.
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.
Disabled: Means that queue access mode is not

enabled.
Time interval that allows the serial server to respond to each
host's request, the communication between serial server and
host is deemed to be completed after schedule time, serial
server continues to deal with the next host request.
If the idle wait time after the serial and host communication is
completed is longer than the frame break setting time, the
serial port will consider the communication to be completed
and continue processing the command from the next host.
This approach is very effective in reducing latency and
improving product performance.
Check the "Apply to all port" check box to apply the current
settings to all serial ports.
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Copyright © 3onedata Co., Ltd.
NP Series Serial Server User Manual
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