Installation guide
5-12
TCP Client 
Setting Value  Notes  Necessity 
Destination IP addr  valid IP 
Allows connection with only the 
specified remote IP address. 
Required 
TCP port 
valid port 
number 
Specific TCP port through which 
the remote IP address listens 
over the TCP connection. 
Required 
Startup 
Attempts to establish a TCP 
connection as soon as the NPort 
is powered on. 
TCP connect 
Any 
Character 
Attempts to establish a TCP 
connection as soon as the NPort 
starts receiving serial data. 
Required 
Delimiter 1 (Hex) 
ASCII code 
for the 1
st
delimiter 
Optional 
Delimiter 2 (Hex) 
ASCII code 
for the 2
nd
delimiter 
Once the NPort receives both 
delimiters through its serial port, 
it immediately packs all data 
currently in its buffer and sends 
it out the NPort’s Ethernet port.
Note: Delimiter 2 is optional. If 
left blank, then Delimiter 1 alone 
trips clearing of the buffer. * 
Optional 
blank (or 0)  Disabled. 
Force transmit (ms) 
1 – 65535 
Forces the NPort’s TCP/IP 
protocol software to try to pack 
serial data received during the 
specified time into the same data 
frame. * 
Optional 
blank (or 0)  Disabled. 
Inactivity time 
1 – 65535 ms
TCP connection is automatically 
closed by this device if the serial 
port is idle for the given time. 
Optional 
0 
TCP connection is not closed 
due to an idle serial line. 
TCP alive check time 
1 – 99 min. 
TCP connection is automatically 
closed by this device if there is 
no TCP activity for the given 
time. 
Optional 
* 
If the size of the serial data received is greater than 1K, the NPort will 
automatically pack the data and send it to the Ethernet. 










