NL201 Adaptador EtherNet (RS232 y CS I/O)
Serial to Ethernet Interface
Very low power
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El módulo Campbell Scientific NL201 es un interface RS232/Ethernet que permite conectar dataloggers y periféricos a redes cableadas EtherNet. El NL201 soporta funciones de red sofisticadas, especialmente en redes PakBus con dispositivos PakBus. Configurándolo en modo "bridge" para el puerto CS I/O, el NL201 permite acceder al stack TCP/IP integrado en algunos de nuestros dataloggers. También puede funcionar como un típico "serial server TCP", "serial client", gateway ModBus TCP/IP, y TLS proxy server para HTTPS y comunicación del puerto definida por el usuario.

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Ventajas y características

  • Extremely low power consumption (650 mW)
  • Provides access to the native Internet protocol capabilities of the CR6, CR800, CR850, CR1000, and CR3000
  • Rugged serial-to-Ethernet server for networking devices and peripherals
  • PakBus routing and device initiated connections


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Descripción detallada

El NL201 es un interface EtherNet que permite conectarse a una red Ethernet 10/100BaseT, full o half duplex. Para su conexión al datalogger, periféricos, ModBus RTU u otros dispositivos serie, dispone de puertos CS I/O y RS-232. Incluye puerto micro USB para facilitar su configuración con nuestro software Device Configuration Utility.

El NL201 puede actuar de router PakBus, TCP serial server, TCP serial client, Modbus TCP/IP gateway, y TLS proxy server para HTTPS y comunicaciones definidas por el usuario.

El NL201 puede configurarse en modo "bridge" sobre el puerto CS I/O, lo cual permite acceder al stack TCP/IP disponible en los dataloggers CR6, CR800, CR850, CR1000, y CR3000 (por ej. página web, email, FTP). De esta forma, con un NL201 conectado al puerto CS I/O de un CR800, tendríamos las misma funcionalidad IP que con un NL121 conectado al puerto para periféricos de 40-pin de un CR1000.


Transmission Distance or Area Worldwide
Power Connector CS I/O port or DC barrel connector (not powered over USB)
Power Requirements 7 to 20 Vdc
CS I/O Port SDC 7, 8,10, or 11 (does not support ME)
RS-232 Port DTE
USB Port Micro-B
Ethernet Port 10Base-T and 100Base-TX (full and half duplex), Auto-MDIX, Auto-IP (APIPA), IPv4, IPv6, ICMP/Ping, ICMPv6/ Ping, TCP, DHCP Client, SLAAC, DNS Client, HTTPS Proxy, Telnet Server, TLS, PakBus, Mobus TCP/IP
Connections/Routes Supported
  • Supports 50 simultaneous TCP connections.
  • Up to 10 of the 50 TCP connections can be used for TLS.
  • PakBus Router supports 50 routes.
  • 15 Modbus Server Transactions (maximum)
Temperature Range
  • -25° to +50°C (standard)
  • -55° to +85°C (extended)
  • Device Configuration Utility over USB or Ethernet
  • Terminal menu over Telnet
  • Terminal menu over RS-232
Service Requirements Ethernet access
Dimensions 16 x 6.73 x 2.54 cm (6.3 x 2.65 x 1 in.)
Weight 177 g (6.3 oz)

Current Drain

Active 50 mA (@ 13 Vdc)
Forced Standby 2 mA (available when using Ethernet-to-CS I/O Bridge Mode)

Communication Rate

RS-232 Port 1200 bps to 115.2 kbps
CS I/O Port 9600 bps to 460.8 kbps
Ethernet 10/100 Mbps


RoHS Compliant
European Standards Meets requirements for a class B device under European Standards.
Application of Council Directive(s) 2004/108/EC
Standards to Which Conformity Is Declared EN61326-1;2013


Data Logger Considerations

Data Logger Serial Server PakBus Router Bridge Mode
CR200(X) Series
CR9000X *

data loggers


♣The CR300 connects to the NL201 using a 10873 serial that is not supplied with the CR300 or the NL201. The CR300-series dataloggers are not compatible with the bridge mode functionality in the NL201 interface.
* Although compatible, the CR9000X does not need an Ethernet interface because it has an on-board Ethernet port.
** It is possible to use an NL201 to connect to a mixed-array data logger (e.g., CR10, CR10X, CR23X, 21X, CR7) by using an SC32B between the data logger's CS I/O port and the NL201's RS-232 port.


NL200 / NL201 Drivers () 01-01-2014

Windows USB drivers for the NL200 Series are installed via the Device Configuration Utililty. In the Device Configuration Utility, click on the link "install the device driver" in the main body of text for the NL200 Series.

Note: Drivers must be installed before connecting the NL200 / NL201 to your computer.


NL200 / NL201 Firmware v.10.03 (571 KB) 04-09-2018

Current NL200 / NL201 firmware. Requires the Device Configuration Utility and a USB micro cable.

Note: When updating to OS 10.03 from OS 6 or previous, settings will be reinitialized to factory defaults. When updating to OS 10.03 from OS 7, settings will be retained.

Historial revisiones

Preguntas frecuentes

Número de FAQs relacionadas con NL201: 12

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  1. After the OS has been sent, the NL201 will automatically be reset. There is no need to do it manually.

  2. No. A connection to the NL201 must be made to configure it for bridge mode. 

  3. Yes. An OS can be uploaded remotely over TCP/IP using our Device Configuration Utility (DevConfig) software. This method will not work, however, if the device has been configured to operate in bridge mode or if the device has not been configured with a valid IP address.

    To upload the OS over TCP/IP, do the following:

    1. Open DevConfig.
    2. Select NL200 from the list of device types.
    3. Click the Send OS tab.
    4. Follow the instructions listed in the “Download via Ethernet” section.
  4. The NL201 and NL240 are available options.

  5. Si. Ya disponemos y continuamos desarrollando variedad de productos compatibles con redes IPv6. Por ejemplo, los módulos NL200/201 y NL240 pueden utilizarse ya como "serial servers" IPv6 en nuestros dataloggers y periféricos para comunicaciones. Anticipamos soporte IPv6 para los dataloggers CR800, CR850, CR1000, CR3000 para mediados de 2014. 

  6. The NL121 plugs into the datalogger and doesn't require an additional cable to work. The NL121 also doesn't take up much extra space. Because the NL121 has a faster interface to the datalogger than the NL201 does, the NL121 communicates faster.

    The NL201 has to be mounted next to the datalogger and requires a cable to connect to it. Also, the NL201 requires some additional configuration so that it will work with the datalogger. For example, choices have to be made regarding how the NL201 is connected to the datalogger. 

  7. The NL201 and NL240 are powered via the DC barrel connector and/or the CS I/O port. Sometimes, users who are using the network link
    interface as a serial terminal server, PakBus router, or Modbus gateway want to connect their devices via the CS I/O port while
    providing power only through the DC barrel connector and a 12 V source (such as a datalogger SW12V output). In this scenario, a jumper
    inside the NL201 or NL240 can be removed, preventing the interfaces from always being powered by the CS I/O connections. For more
    information, refer to the instruction manual for the interface.

  8. The maximum recommended segment length (length of cable between the NL device and the Ethernet repeater, hub, switch, or router it is connected to) for 10Base-T and 100Base-Tx networks using CAT5e cable is 100 m. 

  9. The datalogger needs to have its internal TCP stack active. This can be done using the NL115, NL120, NL201, or NL240.

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