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Product short description:
  • 16 discrete I/O
  • Active low in / sinking out
  • Ethernet I/O plus Expansion I/O
  • Multi-protocol support

NT2110 modules offer 16 bidirectional discrete I/O channels for low-side (sinking switch) applications. NTE Ethernet models provide a compact network interface to monitor or control discrete device levels. Appending NTX expansion models can interface up to 64 discrete I/O channels on a single IP address.

Click here to watch a short video highlighting the features of the BusWorks NT Series.

NT2111 Ethernet Digital I/O Modules with Discrete Active Low Input – Sinking Output Description

The BusWorks® NT2111 Ethernet digital I/O modules with discrete active low input/sinking output module offers a cost-effective, modular solution for Ethernet remote I/O systems. Two module types are available.

NTE Ethernet models provide the protocol interface plus I/O signal processing channels.

NTX expansion modules add extra I/O channels when mated to any NTE Ethernet communication module.

NT2111 modules offer 16 bidirectional discrete I/O channels for low-side (sinking switch) applications. NTE Ethernet models provide a compact network interface to monitor or control discrete device levels.

Appending NTX expansion models can interface up to 64 discrete I/O channels on a single IP address.

Applications include monitoring and control of relays, solenoids, contact closures, TTL logic, and discrete sensors on motors, lamps, valves, doors, etc.

An isolated RS-485 bus links up to three expansion modules to the Ethernet module with connectors that join along the DIN rail. This internal NT bus distributes power and communication between the modules. Users can mix analog, temperature, and discrete I/O modules across the NT bus.

Acromag’s i2o® messaging technology allows direct peer-to-peer or multicast communication between remote modules without a master controller.

Learn more about the Ethernet NT Series and view all models >

Features and Benefits

  • Configured over Ethernet with web browser
  • Expandable I/O capacity, up to 64 I/O channels of mixed signal types on one IP address
  • Field-selectable Modbus TCP/IP, EtherNet/IP,
    or *Profinet communication
  • i2o peer-to-peer or multicast communication
  • Dual RJ45 ports enable daisy chain topology
  • Inputs support TTL thresholds and up to 32V
  • Open-drain outputs switch up to 32V and 250mA
  • Tandem input/output channels allow loop-back monitoring of outputs
  • Configurable counters and totalization
  • *OPC-UA, *MQTT and *RESTful API IIoT support
  • Conditional logic for rule-based I/O operation
  • Advanced *alarm and *data logging functions
  • 1500V isolation between I/O, network, and power
  • Thin 25mm housing with pluggable terminals
  • Wide temperature operation (-40 to 70°C)
  • LED status indicators for visual troubleshooting
  • CE compliant. UL/cUL Class 1 Div 2 and ATEX/IECEx Zone 2 approvals

* Coming soon. Consult factory for availability.

Learn more about the Ethernet digital I/O NT Series and view all models >

How to Distribute Critical Signals to Multiple Locations at the Same Time - 8401069
A satellite launch company needs to send a discrete abort signal to multiple locations at the same time if anything gets out of specification. The equipment to monitor and control the launch are in several different buildings but all on the same network. Timing is critical and all signals must be sent at the same...
How to Connect to Acromag Ethernet I/O Devices - 8500815
Getting Connected to Acromag Ethernet I/O Devices These instructions summarize the basic steps you will have to take in order to initially connect an Acromag Ethernet I/O product to your Personal Computer (PC) or laptop. To connect an Ethernet device to your PC, consult with your network administrator. Either temporarily change the TCP/IP configuration of...
What is EtherNet/IP? White Paper - 8500747 (Log in to view the file)
Introduction to EtherNet/IP What is EtherNet/IP (Ethernet Industrial Protocol)? EtherNet/IP is traditional Ethernet combined with an industrial application layer protocol targeted to industrial automation. This application layer protocol is the Control and Information Protocol (CIP™). In this whitepaper, you will review the basic aspects of EtherNet/IP and learn how the open-source protocol can benefit your...
How to Remotely Access Ethernet I/O Over the Internet - 8400517 (Log in to view the file)
This white paper details the steps needed to access your I/O module remotely over the internet. This can be done with Ethernet-enabled I/O modules that have the capability to display built-in webpage-based output monitoring. In other words, if your I/O module can serve a webpage over Ethernet, and the network it is connected to has...
How to Connect to an Ethernet Device for Communication - 8501122-8501116 (Log in to view the file)
How to Connect to an Ethernet Device for Communication Acromag manufactures Ethernet-enabled devices that monitor and isolate voltage, current, thermocouple, and RTD signals, as well as control analog and digital outputs, and can transmit I/O information over Ethernet and on the internet. However, the complexities of Ethernet communication can make connecting to these devices difficult....
How to Communicate to Ethernet Modules in an Allen Bradley ControlLogix System - 8400495
Communicating to Acromag BusWorks Series 9xxEN-6xxx and XTxxx2-xxx Ethernet Modules in an Allen Bradley ControlLogix System Objective: This document illustrates a procedure for integrating the Acromag Series XTxxx2, and 9xxEN-6xxx modules into the Allen Bradley control system as a third-party generic module. The reference model for this procedure is the Model 961EN-6006. It is assumed...
NTE Series Firmware Download and a Request Form to be Notified of Feature Updates. (Log in to download the file)
NT EtherNet/IP EDS File (Log in to download the file)
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Additional information

Weight 8 oz
Dimensions 1 × 5 × 6 in
Part Number

NTE2111-1111: Ethernet I/O module with dual RJ45 ports, 16 discrete I/O channels, NTX2111-0011: Expansion I/O module with 16 discrete I/O channels

Product Series

BusWorks NT Series

  • Description

    NT2111 Ethernet Digital I/O Modules with Discrete Active Low Input – Sinking Output Description

    The BusWorks® NT2111 Ethernet digital I/O modules with discrete active low input/sinking output module offers a cost-effective, modular solution for Ethernet remote I/O systems. Two module types are available.

    NTE Ethernet models provide the protocol interface plus I/O signal processing channels.

    NTX expansion modules add extra I/O channels when mated to any NTE Ethernet communication module.

    NT2111 modules offer 16 bidirectional discrete I/O channels for low-side (sinking switch) applications. NTE Ethernet models provide a compact network interface to monitor or control discrete device levels.

    Appending NTX expansion models can interface up to 64 discrete I/O channels on a single IP address.

    Applications include monitoring and control of relays, solenoids, contact closures, TTL logic, and discrete sensors on motors, lamps, valves, doors, etc.

    An isolated RS-485 bus links up to three expansion modules to the Ethernet module with connectors that join along the DIN rail. This internal NT bus distributes power and communication between the modules. Users can mix analog, temperature, and discrete I/O modules across the NT bus.

    Acromag’s i2o® messaging technology allows direct peer-to-peer or multicast communication between remote modules without a master controller.

    Learn more about the Ethernet NT Series and view all models >

    Features and Benefits

    • Configured over Ethernet with web browser
    • Expandable I/O capacity, up to 64 I/O channels of mixed signal types on one IP address
    • Field-selectable Modbus TCP/IP, EtherNet/IP,
      or *Profinet communication
    • i2o peer-to-peer or multicast communication
    • Dual RJ45 ports enable daisy chain topology
    • Inputs support TTL thresholds and up to 32V
    • Open-drain outputs switch up to 32V and 250mA
    • Tandem input/output channels allow loop-back monitoring of outputs
    • Configurable counters and totalization
    • *OPC-UA, *MQTT and *RESTful API IIoT support
    • Conditional logic for rule-based I/O operation
    • Advanced *alarm and *data logging functions
    • 1500V isolation between I/O, network, and power
    • Thin 25mm housing with pluggable terminals
    • Wide temperature operation (-40 to 70°C)
    • LED status indicators for visual troubleshooting
    • CE compliant. UL/cUL Class 1 Div 2 and ATEX/IECEx Zone 2 approvals

    * Coming soon. Consult factory for availability.

    Learn more about the Ethernet digital I/O NT Series and view all models >

  • Tech Papers

    How to Distribute Critical Signals to Multiple Locations at the Same Time - 8401069
    A satellite launch company needs to send a discrete abort signal to multiple locations at the same time if anything gets out of specification. The equipment to monitor and control the launch are in several different buildings but all on the same network. Timing is critical and all signals must be sent at the same...
    How to Connect to Acromag Ethernet I/O Devices - 8500815
    Getting Connected to Acromag Ethernet I/O Devices These instructions summarize the basic steps you will have to take in order to initially connect an Acromag Ethernet I/O product to your Personal Computer (PC) or laptop. To connect an Ethernet device to your PC, consult with your network administrator. Either temporarily change the TCP/IP configuration of...
    What is EtherNet/IP? White Paper - 8500747 (Log in to view the file)
    Introduction to EtherNet/IP What is EtherNet/IP (Ethernet Industrial Protocol)? EtherNet/IP is traditional Ethernet combined with an industrial application layer protocol targeted to industrial automation. This application layer protocol is the Control and Information Protocol (CIP™). In this whitepaper, you will review the basic aspects of EtherNet/IP and learn how the open-source protocol can benefit your...
    How to Remotely Access Ethernet I/O Over the Internet - 8400517 (Log in to view the file)
    This white paper details the steps needed to access your I/O module remotely over the internet. This can be done with Ethernet-enabled I/O modules that have the capability to display built-in webpage-based output monitoring. In other words, if your I/O module can serve a webpage over Ethernet, and the network it is connected to has...
    How to Connect to an Ethernet Device for Communication - 8501122-8501116 (Log in to view the file)
    How to Connect to an Ethernet Device for Communication Acromag manufactures Ethernet-enabled devices that monitor and isolate voltage, current, thermocouple, and RTD signals, as well as control analog and digital outputs, and can transmit I/O information over Ethernet and on the internet. However, the complexities of Ethernet communication can make connecting to these devices difficult....
    How to Communicate to Ethernet Modules in an Allen Bradley ControlLogix System - 8400495
    Communicating to Acromag BusWorks Series 9xxEN-6xxx and XTxxx2-xxx Ethernet Modules in an Allen Bradley ControlLogix System Objective: This document illustrates a procedure for integrating the Acromag Series XTxxx2, and 9xxEN-6xxx modules into the Allen Bradley control system as a third-party generic module. The reference model for this procedure is the Model 961EN-6006. It is assumed...
  • Specs & Data Sheets

  • Software

    NTE Series Firmware Download and a Request Form to be Notified of Feature Updates. (Log in to download the file)
    NT EtherNet/IP EDS File (Log in to download the file)
  • Accessories

    • Compare

      4001-252: DIN Rail End Stops

      • DIN rail end stop for hazloc approvals
      Select options
    • Compare

      5035 Series: Ethernet Cables

      • Ethernet straight cable, CAT5
      • Ethernet crossover cable, CAT5E
      • Low EMI Double-Shielded Ethernet Patch Cable
      Select options
  • Additional information

    Additional information

    Weight 8 oz
    Dimensions 1 × 5 × 6 in
    Part Number

    NTE2111-1111: Ethernet I/O module with dual RJ45 ports, 16 discrete I/O channels, NTX2111-0011: Expansion I/O module with 16 discrete I/O channels

    Product Series

    BusWorks NT Series