User Manual

1 to 99 min: NPort 5200 automatically closes the TCP connection if there is no TCP activity
for the given time. After the connection is closed, NPort 5200 starts listening for another
Real COM driver connection from another host.
Max connection
Setting Factory Default Necessity
1, 2, 3, 4
1 Required
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 5200, 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 5200 serial port.
Max connection 2 to 4:
Allows 2 to 4 host’s Real COM drivers to open the specific NPort 5200 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.
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 5200 from the Ethernet
interface.
When Max connection is set to 2, 3, or 4, this means that NPort 5200 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 5200 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
5200’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 5200 receives both delimiters through its serial port, it immediately packs all
data currently in its buffer and sends it to the NPort 5200’s Ethernet port.
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 5200 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.