NPort 5100A Series Web Console Configuration
Max connection is usually used when the user needs to receive data from different hosts simultaneously. The
factory default is 1. In this case, only one specific host can access this port of the NPort 5100A, and the Real
COM driver on that host will have full control over the port.
Max. Connection 1: Allows only 1 host’s Real COM driver to open the specific NPort 5100A serial port.
Max Connection 2 to 8: Allows 2 to 8 host’s Real COM drivers to open the specific NPort 5100A serial port, at
the same time. When multiple hosts’ Real COM drivers open the serial port at the same time, the COM driver
only provides a pure data tunnel without control ability. That is, this serial port parameter will use the
firmware’s settings, not depend on your application program (AP).
Application software that is based on the COM driver will receive a driver response of “success” when the
software uses any of the Win32 API functions. The firmware will only send the data back to the driver on the
host.
Data will be sent first-in-first-out when data comes into the NPort 5100A from the Ethernet interface.
ATTENTION
When Max connection
> 1, this means that the
NPort 5100A will be using a “multi connection application” (i.e.,
2 or more hosts are allowed access to the port at the same time). When using a multi connection application,
the
NPort 5100A will use the serial communication parameters set in the console.
All of the hosts connected to
that port must use the same serial settings. If
one of the hosts opens the COM
port with parameters that are
different
from the NPort 5100A’s console setting, data communication may not work properly.
Ignore jammed IP
Setting Factory Default Necessity
No or Yes No Optional
Previously, when Max connections > 1, and the serial device is transmitting data, if any one of the connected
hosts is not responding, it will wait until the data has been transmitted successfully before transmitting the
second group of data to all hosts. Currently, if you select Yes for “Ignore jammed IP,” the host that is not
responding will be ignored, but the data will still be transmitted to the other hosts.
Allow driver control
Setting Factory Default Necessity
No or Yes No Optional
If “max connection” is greater than 1, NPort will ignore driver control commands from all connected hosts.
However, if you set “Allow driver control” to YES, control commands will be accepted. Note that since the NPort
5100A may get configuration changes from multiple hosts, the most recent command received will take
precedence.
Packing length
Setting Factory Default Necessity
0 to 1024 0 Optional
Default = 0: The Delimiter Process will be followed, regardless of the length of the data packet. If the data
length (in bytes) matches the configured value, the data will be forced out. The data length can be configured
for 0 to 1024 bytes. Set to 0 if you do not need to limit the length.
Delimiter 1
Setting Factory Default Necessity
00 to FF (hex) None Optional
Delimiter 2
Setting Factory Default Necessity
00 to FF (hex) None Optional
Once the NPort 5100A receives both delimiters through its serial port, it immediately packs all data currently
in its buffer and sends it to the NPort 5100A’s Ethernet port.
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