1
NL121 Ethernet Module
1.
Introduction
Campbell Scientific’s NL121 Ethernet Module enables Ethernet communications.
It allows the datalogger to communicate over a local network or a dedicated
Internet connection via Ethernet. This small, rugged communication device
connects to the 40-pin peripheral port on a CR1000 or CR3000 datalogger.
This manual describes how to use
LoggerNet
to connect to your datalogger with
an NL121 attached. You can also use other software packages such as
PC400
,
RTDAQ
, or
LoggerLink Mobile Apps for iOS and Android
.
Before using the NL121, please study:
Section
2
,
Cautionary Statements
(p. 1)
Section
3
,
Initial Inspection
(p. 1)
Section
4
,
Quickstart
(p. 2)
The Quickstart section explains how to quickly begin using an NL121 for
straightforward Ethernet communications. Section
6
,
TCP/IP Functionality
(p. 9)
,
describes in detail the IP functionality of the NL121.
2.
Cautionary Statements
READ AND UNDERSTAND the
Precautions
section at the front of this
manual.
The NL121 requires CR1000 or CR3000 operating system version 28 or later.
The first time an NL121 is attached to a datalogger, the datalogger’s memory
has to be reorganized to allow room in memory for the IP stack. To avoid the
loss of data, collect your data before attaching the NL121 to a datalogger.
The NL121 is rugged, but it should be handled as a precision scientific
instrument.
The NL121 has integrated surge protection. In order for the surge protection
to work correctly, the NL121 must be well grounded. The NL121 is grounded
through the datalogger’s ground lug via the thumb screw used to attach the
NL121 to the datalogger. That connection is only made if the thumb screw on
the NL121 is tightened down to the datalogger.
Shielded Ethernet cable should be used for cable length longer than 2.7 m.
Always power down the datalogger before installing or removing the NL121
to or from the datalogger.
3.
Initial Inspection
Upon receipt of the NL121, inspect the packaging and contents for damage. File
damage claims with the shipping company.