This product is no longer available and has been replaced by: NL116. Some accessories, replacement parts, or services may still be available.
NL115 Ethernet Interface and CompactFlash Module
Services Available
Repair Yes
Calibration No
Free Support Yes


Campbell Scientific’s NL115 enables 10baseT Ethernet communications and stores data on a removable CompactFlash® card. This small, rugged communication device connects to the 40-pin peripheral port on a CR1000 or CR3000 datalogger.

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Benefits and Features

  • Provides Ethernet communications and additional data storage for a CR1000 or CR3000 datalogger
  • Ethernet connection allows for data logger communications over a local area network or the Internet via TCP/IP
  • Removable CompactFlash cards can provide long-term data storage
  • Small, light-weight CF cards fit in your pocket for easy transport between the data logger and PC


Detailed Description

The NL115 allows the data logger to communicate over a local network or a dedicated Internet connection via TCP/IP. A 10baseT Ethernet straight through cable is used when the cable is run from a hub to the NL115. A 10baseT Ethernet crossover cable is used if the cable is run directly from the computer to the NL115.

The NL115/CF card combination can be used to expand the data logger's memory, transport data/programs from the field site(s) to the office, and upload power up functions. One Type I or Type II CompactFlash (CF) card fits into the NL115’s card slot.

Only industrial-grade CF cards should be used with our products. Although consumer-grade cards cost less than industrial-grade cards, the consumer-grade cards are more susceptible to failure resulting in both the loss of the card and its stored data. Industrial-grade cards also function over wider temperature ranges and have longer life spans than consumer-grade cards.

Data stored on the card can be retrieved either by removing the card and carrying it to a computer or through a communications link with the data logger. The computer can read the CF card either with the computer’s PCMCIA slot and the CF1 adapter or the computer’s USB port and the 17752 Reader/Writer.

CardConvert is used to convert and save binary data from a CompactFlash® card. CardConvert is included in our PC200W, PC400, LoggerNet, and RTDAQ datalogger support software.


Power Requirements 12 V supplied through the data logger’s peripheral port
Ethernet Speed 10Base-T (10 Mbps), half-duplex
Typical Access Speed 200 to 400 kbits s-1
Memory Configuration User selectable; ring (default) or fill-and-stop
CF Card Requirements Industrial-grade
Data Logger Operating System (OS) The CR1000 OS must be OS 9 or later. Both the CR1000 and CR3000 need OS 25 or later to read cards with more than 2 GB of storage.
Typical Current Drain
  • 19 mA (CR1000 with NL115, no Ethernet cable attached, not actively communicating over Ethernet nor accessing the CF card)
  • 20 mA (CR1000 with NL115, Ethernet cable attached)
  • 20 mA (CR1000 with NL115, Ethernet cable attached and communicating over Ethernet)
  • 43 mA (CR1000 with NL115 communicating over Ethernet and accessing CF card)
  • 2 mA (CR1000 with NL115; Ethernet port has been put to sleep using the IPNetPower() CRBasic instruction.)
  • Add 1 mA to current drain if red or green Status LED is continuously on.
  • Add 2 mA to current drain if orange Status LED is continuously on.
  • 10.2 x 8.9 x 6.4 cm (4.0 x 3.5 x 2.5 in.)
  • 25.2 x 10.2 x 7.1 cm (9.9 x 4.0 x 2.8 in.) for CR1000 with NL115 attached
Weight 154 g (5.4 oz)

EMI and ESD Protection

European Standards Meets requirements for a class A device under European Standards.
Application of Council Directive(s) 89/336/EEC as amended by 89/336/EEC and 93/68/EEC
Standards to Which Conformity Is Declared EN55022-1; 1995 and EN50082-1: 1992

Software Requirements

LoggerNet Version 3.2 or later
PC400 Version 1.3 or later
DevConfig Version 1.5 or later


Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Data Loggers

Compatible Note
CR1000 (retired)
CR200X (retired)
CR206X (retired)
CR295X (retired)
CR3000 (retired)
CR3000 (retired)
CR5000 (retired)
CR800 (retired)
CR850 (retired)
CR9000X (retired)

Mounting Equipment

Compatible Note
ENC10/12R Attached to a CR1000 or CR3000
ENC12/14 Attached to a CR1000
ENC14/16 Attached to a CR1000 or CR3000
ENC16/18 Attached to a CR1000 or CR3000
ENC24/30 Attached to a CR1000 or CR3000

Additional Compatibility Information

CompactFlash (CF) Cards

Campbell Scientific offers and recommends several CF cards (see Ordering tab). These cards have passed Campbell Scientific's ESD testing and operate properly with our data loggers.

Only industrial-grade CF card should be used with our products. Although consumer-grade cards cost less than industrial-grade cards, the consumer-grade cards are more susceptible to failure resulting in both the loss of the card and its stored data. Industrial-grade cards also function over wider temperature ranges and have longer life spans than consumer-grade cards.

Software Requirements

The NL115 is set up using the Device Configuration utility (DevConfig). The NL115 requires LoggerNet 3.2 or later, PC400 1.3 or later, and DevConfig 1.5 or later.

Data Logger Considerations

The NL115 fastens onto the data logger's 40-pin peripheral port. This means that the NL115 is only compatible with the CR1000 and CR3000. It is NOT compatible with the CR800, CR850, CR200X, CR5000, or CR9000X dataloggers.

To read cards with more than 2 GB of storage, the data logger operating system must be OS 25 or later.

Articles and Press Releases

FAQs for

Number of FAQs related to NL115: 31

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  1. The file on the card is open until the program is stopped or the button on the device is pressed.

  2. No. The CR800 and CR850 do not have the necessary peripheral port to connect to an NL115.

  3. Campbell Scientific always recommends using CF cards carried by Campbell Scientific. Although another CF card might fit and work with a CFM100 or NL115, the CF card might not be rated for the same temperature range as the CFM100 or NL115. In addition, another CF card might not have the same electrostatic discharge (ESD) immunity as the cards tested and carried by Campbell Scientific. For more detail on CF cards, see the “CF Card Information” application note.

  4. The NL115 isn’t configurable for an IP address. The IP address is set in the data logger using the Device Configuration Utility.

  5. When the CardOut() instruction or the TableFile() with TFOption 64 instruction is used, the data table is saved to both the data logger’s internal memory and the card.

  6. No. Only a program change could cause this. To save data to a CFM100 or an NL115, a CardOut() or TableFile() instruction must be present in at least one data table.

  7. If the CardOut() or TableFile() instructions are configured as fill and stop, the data logger will stop writing data to the CompactFlash cards after they are full.

  8. The CFM100 or NL115 is detected during the data logger boot-up cycle, that is, when it is powered on. Disconnect or connect the CFM100 or NL115 to a data logger only after power to the data logger has been disconnected.