NPort 5100 Series User’s Manual Web Console Configuration
5-16
If the user wants to send a series of characters in the same packet, the serial device attached to
NPort 5100 should send that series of characters during a time interval less than the Force transmit
timeout for NPort 5100, and the total length of data must be less than or equal to NPort 5100’s
internal buffer size. The serial communication buffer size for NPort 5100 is 1 KB per port.
Local TCP port
Setting Factory Default Necessity
1 to 65535 4001 Required
The “Local TCP port” is the TCP port that NPort 5100 uses to listen to connections, and that other
devices must use to contact NPort 5100. To avoid conflicts with well known TCP ports, the default
is set to 4001.
Command port
Setting Factory Default Necessity
1 to 65535 966 Optional
The “Command port” is a listen TCP port for IP-Serial Lib commands from the host. In order to
prevent a TCP port conflict with other applications, the user can set the Command port to another
port if needed. IP-Serial Lib will automatically check the Command Port on NPort 5100 so that the
user does not need to configure the program.
TCP Client Mode