NPort 5110 Series User’s Manual Web Console Configuration
5-11
Max connection 2 to 4:
Allows 2 to 4 host’s Real COM drivers to open the specific NPort 5110 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 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 5110 from the Ethernet
interface.
ATTENTION
When Max connection is set to 2, 3, or 4, this means that NPort 5110 will be using a “multi
connection application” (i.e., 2, 3, or 4 hosts are allowed access to the port at the same time).
When using a multi connection application, NPort 5110 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 NPort
5110’s console setting, data communication may not work properly.
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 5110 receives both delimiters through its serial port, it immediately packs all data
currently in its buffer and sends it to the NPort 5110’s Ethernet port.
ATTENTION
Delimiter 2 is optional. If left blank, then Delimiter 1 alone trips clearing of the buffer. If the size
of the serial data received is greater than 1 KB, the NPort 5110 will automatically pack the data
and send it to the Ethernet. However, to use the delimiter function, you must at least enable
Delimiter 1. If Delimiter 1 is left blank and Delimiter 2 is enabled, the delimiter function will not
work properly.
Force transmit
Setting Factory Default Necessity
0 to 65535 ms 0 ms Optional
0: Disable the force transmit timeout.
1 to 65535: Forces the NPort 5110’s TCP/IP protocol software to try to pack serial data received
during the specified time into the same data frame.
This parameter defines the time interval during which NPort 5110 fetches the serial data from its
internal buffer. If data is incoming through the serial port, NPort 5110 stores the data in the
internal buffer. NPort 5110 transmits data stored in the buffer via TCP/IP, but only if the internal