Campbell Scientific NL200/NL201 Network Link Interface User Manual
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NL200/201 Network Link Interface
datalogger and forward the unencrypted data. In HTTPS communications,
web browsers use port 443. The NL200/201 will always listen on port 443
regardless of the value of this setting. Therefore, if HTTPS
communications are desired, it is unnecessary to configure this setting.
•
Set the
TLS Proxy Forward Physical Port to CS I/O Port for
Configuration A or to
Ethernet Port for Configuration B.
•
For Configuration A, leave the
TLS Proxy Forward IP Address set to
0.0.0.0. For Configuration B, enter the datalogger’s IP address in the
TLS
Proxy Forward IP Address setting. This address must be configured in
the datalogger. It must be a unique, static IP address on the same subnet as
the NL200/201 IP address. For example, if the NL200/201 IP address is
192.168.5.1 with subnet 255.255.255.0, a valid IP address for the
datalogger would be 192.168.5.2 provided there are no other devices on
the subnet with that address.
•
Set the
TLS Proxy Forward Port Number. This is the TCP port number
that the proxy server will use when it opens a TCP connection to the
datalogger to forward unencrypted data. The datalogger’s TCP server port
must be set to communicate on this port number. The default value for the
datalogger’s PakBus/TCP server is 6785, so this setting can likely be left
at the default. The datalogger listens for HTTP traffic on port 80. The
NL200/201 will always forward TLS traffic received on port 443(HTTPS)
to port 80(HTTP) regardless of this setting. Therefore, if HTTPS
communications are desired, it is unnecessary to configure this setting.
•
It is recommended to leave the
TLS Proxy Timeout set to 90 seconds
although it can be changed if desired. This will determine how fast the
NL200/201 proxy server and client connections will timeout if no activity
is detected.
To configure the datalogger for Configuration A, connect to the datalogger
using DevConfig and select the CS I/O IP tab. Set the
CS I/O Interface IP
Address to a static IP address. Use the datalogger’s CS I/O Interface that
corresponds to the NL200/NL201’s
CS I/O IP Interface Identifier setting.
To configure the datalogger for Configuration B, connect to the datalogger
using DevConfig and select the TCP/IP tab. Set the
Ethernet Interface IP
Address to a static IP address.
For either configuration, the IP address must not be 0.0.0.0, and it must be
unique on the same subnet as the NL200/201 IP address. For example, if the
NL200/201 IP address is 192.168.5.1 and Subnet Mask is 255.255.255.0, the
datalogger address could be set as 192.168.5.2 provided there are no other
devices on the subnet with that address. Also set the datalogger’s Subnet Mask
to match that of the NL200/201.
The datalogger must be listening on the same TCP port that the NL200/201 is
configured to forward TCP traffic on (NL200/201 setting: TLS Proxy Forward
Port Number). The datalogger always listens on port 80 for HTTP, therefore,
no TCP port configuration is necessary for using HTTP.
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