The Acromag NTW2120 is a Wireless Remote Discrete Active Input Sourcing Output IO Module. Firstly, it connects discrete field signals. Such as contact closures, push buttons, limit switches, and equipment status signals to PLC, SCADA, and IIoT monitoring systems over secure wireless Ethernet networks.
This module provides sixteen tandem discrete I/O channels configured with:
- active-high inputs
- sourcing transistor outputs
making it suitable for control systems requiring sourcing logic interfaces rather than sinking output behaviour.
As part of the BusWorks NT modular remote I/O platform, the NTW2120 can expand to support up to 64 mixed signal I/O channels. Achieved by using NTX expansion modules under a single IP address for scalable distributed monitoring applications.
Key Features
- Sixteen tandem discrete channels with active-high inputs and sourcing transistor outputs
- Designed for monitoring switches, relays, contact closures, and equipment status signals
- Integrated dual-band Wi-Fi Ethernet connectivity (2.4 GHz / 5 GHz)
- Includes an RJ45 Ethernet port for local configuration and commissioning
- Direct integration with PLC, SCADA, and IIoT monitoring systems
- Supports Modbus TCP, EtherNet/IP, PROFINET, OPC-UA, MQTT, and REST API
- Expandable to 64 mixed signal I/O channels using NTX expansion modules
- DIN-rail mounting for control cabinet installation
- Wide industrial operating temperature range −40 °C to +70 °C
Supported Industrial Protocols
The NTW2120 Wireless Remote Discrete Active Input Sourcing Output IO Module integrates directly into automation networks using:
- Modbus TCP
- EtherNet/IP
- PROFINET
- OPC-UA
- MQTT
- REST API
These protocols allow seamless connectivity with PLC controllers, SCADA platforms, and modern IIoT monitoring environments.
Expandable BusWorks NT Remote I/O Architecture
The NTW2120 operates as a wireless interface module within the Acromag BusWorks NT modular remote I/O platform.
A BusWorks NT node consists of either:
- an NTW wireless interface module, or
- an NTE wired Ethernet interface module
combined with optional NTX expansion modules to increase signal capacity.
Up to 64 mixed analog, digital, and temperature I/O channels can operate under one IP address, simplifying addressing across distributed infrastructure monitoring systems.
Equivalent wired Ethernet connectivity is available using BusWorks NTE interface modules where wireless networking is not preferred or permitted. The wired compatible version is the NT2120.
Typical Applications
Remote Equipment Status Monitoring
Monitor discrete signals from:
- push buttons
- contact closures
- relay outputs
- limit switches
- proximity switches
Ideal for distributed cabinet monitoring across infrastructure environments.
Control Panel Signal Integration
Deploy the NTW2120 within control cabinets to monitor:
- equipment availability signals
- alarm contacts
- safety interlocks
- auxiliary status signals
Supports sourcing logic control architectures commonly used in industrial automation systems.
Utilities and Water Infrastructure Monitoring
Suitable for monitoring discrete signals within:
- pump stations
- treatment plants
- reservoir control panels
- distributed telemetry enclosures
Wireless connectivity simplifies deployment across remote infrastructure assets.
Transport and Infrastructure Equipment Enclosures
Deploy within:
- signalling cabinets
- roadside monitoring systems
- lighting control infrastructure
- tunnel services enclosures
Extends monitoring capability beyond Ethernet cable limits.
How the NTW2120 Wireless Remote Discrete Active Input Sourcing Output IO Module Works
Typical deployment architecture:
Discrete field signals
→ NTW2120 Wireless Remote Discrete Active Input Sourcing Output IO Module
→ Wi-Fi Ethernet network
→ PLC, SCADA, or cloud monitoring platform
This enables reliable monitoring and control of discrete equipment signals without installing additional network cabling between distributed control cabinets.
Technical Specifications
| Feature | Specification |
|---|---|
| Discrete Channels | 16 tandem discrete I/O |
| Input Type | Active-high inputs |
| Output Type | Sourcing transistor outputs |
| Network Interface | Wi-Fi Ethernet (802.11 a/b/g/n dual-band) |
| Supported Protocols | Modbus TCP, EtherNet/IP, PROFINET, OPC-UA, MQTT |
| Expansion Capability | Up to 64 channels using NTX modules |
| Mounting | DIN-rail |
| Operating Temperature | −40 °C to +70 °C |
| Configuration | Embedded web interface |
The spec sheet provides more details.
Wireless Remote Discrete Active Input Sourcing Output IO Module Integration Support
Metromatics provides local engineering support across Australia and New Zealand. We help integrate the Acromag NTW2120 Wireless Remote Discrete Active Input Sourcing Output IO Module. Our support covers transport infrastructure, utilities monitoring systems, and industrial automation control cabinets.
Speak with our team to select the correct BusWorks NT interface configuration, expand monitoring systems using NTX modules, and deploy reliable wireless discrete signal monitoring solutions for PLC and SCADA architectures.
