Campbell NL115, Instruction Manual

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NL115 Ethernet and CompactFlash
®
Module
5 Overview
The NL115 Ethernet/CompactFlash Module enables 10 Base T Ethernet
communication with the datalogger. It also has a slot for a Type I or Type II
CompactFlash (CF) card (3.3 V, 75 mA).
The NL115/CF card combination can be used to expand the datalogger’s
memory, transport data/programs from the field site(s) to the office, upload
power up functions, and store JPEG images from the CC640 camera. Data
stored on cards can be retrieved through a communications link to the
datalogger or by removing the card and carrying it to a computer. The
computer can read the CF card either with the CF1 adapter or 17752
Reader/Writer. The CF1 adapter allows the PC’s PCMCIA card slot to read
the CF card; the 17752 Reader/Writer allows the PC’s USB port to read the CF
card. User-supplied CF adapters may also be used.
LoggerNet’s File Control should not be used to retrieve
data from a CompactFlash card. Using File Control to
retrieve the data can result in a corrupted data file.
CAUTION
5.1 Status LEDs
There is one red-green-orange LED (light emitting diode) and two buttons:
control and eject. The LED indicates the status of the module. The LED will
flash red when the CF card is being accessed, solid green when it is OK to
remove the card, solid orange to indicate an error, and flashing orange if the
card has been removed and has been out long enough that CPU memory has
wrapped and data is being overwritten without being stored to the card. The
control button must be pressed before removing a card to allow the datalogger
to store any buffered data to the card and then power it off. The eject button is
used to eject the CF card. Note that if the eject button cannot be pressed, it
may have been disabled by bending it to the right. Straighten and then press
the eject button to eject the CF card.
5.2 Power
The Ethernet/CompactFlash Module is powered by 12 VDC received from the
datalogger through the peripheral port.
Additional power consumption occurs if the Status LED is continuously lit. At
12 Vdc, an additional 1 mA is drawn by the red or green LED; an additional 2
mA is drawn by the orange LED.
5.3 CF Card Data Retention
The module accepts CompactFlash (CF) cards which do not require power to
retain data.
Typically, a CF card can be erased and rewritten a minimum of 100,000 times.
Industrial CF cards, graded for 2,000,000 write cycles, are recommended for
most applications.
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