Campbell Scientific NL200/NL201 Network Link Interface - Manual (Page 48)

Appendix C. NL200/201 Settings
Ethernet Speed / Duplex Configuration
Specifies the Ethernet link speed and duplex settings.
Speed: When used as a TCP/IP serial server, the overall data-transfer
speed is largely dependent on the speed of the serial port. Setting the
Ethernet link speed to 100 Mbps will increase the overall data throughput
rate by a relatively small amount, while setting it to 10 Mbps will conserve
power.
Duplex: Setting the Duplex to “Full” allows communication in both
directions simultaneously, while setting it to “Half” allows communication
in only one direction at a time.
Setting the Ethernet Speed/Duplex Configuration to “Auto” will cause the
NL200/201 to auto-configure to the faster of the two speeds and fastest duplex
setting according to the capabilities of the network.
Admin Password
To help guard against unauthorized access to the NL200/201, it is password-
protected by the Admin Password. This password will be required to gain
access to the NL200/201 via DevConfig over TCP and telnet. The default
password is nl200. If the password setting is left blank, no password is
required to access the NL200/201. After settings are saved, the new password
will be in effect.
TCP Configuration Port Number
The default TCP port number for configuration via TCP is 6786. This entry
makes it possible for the user to change the port number used in TCP
configuration if desired. Typically, it is not necessary to change this entry
from its default. (range 1..65535)
C.2 RS-232 Tab
RS-232 Configuration
This setting controls which process will be associated with the RS-232 port.
The following values are defined:
TCP Serial Server
The device will listen for an incoming TCP connection from a remote
client. The port number of the listening connection is specified in the
“RS-232 Service Port Number” setting. Data received on the TCP
connection will be forwarded to the RS-232 port, and data received on the
RS-232 port will be forwarded to this TCP connection.
TCP Serial Client
The device will maintain a TCP client connection with a remote server.
The IP address and port number of the remote server are configured in the
settings “RS-232 TCP Serial Client IP Address” and “RS-232 TCP Serial
Client Port”. Data received on the RS-232 port will be forwarded to this
TCP connection, and data received on the TCP connection will be
forwarded to the RS-232 port. The device will attempt to open a
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