Ethernet I/O Modules

06 October 2025 Knowledge Base

Ethernet I/O Modules are central components in modern industrial automation and remote monitoring. They allow digital and analog signals to be collected, processed, and transmitted over Ethernet using open protocols (e.g., Modbus TCP, OPC UA). These modules provide the flexibility to decentralize input/output intelligence, reduce wiring complexity, and integrate seamlessly with SCADA, DCS, and IIoT systems. Typical applications include factory automation, energy management, environmental monitoring, and access control. Depending on the series, Ethernet I/O modules vary in I/O type, speed, environmental resilience, and intelligence – making each series ideal for specific automation scenarios.

ICP DAS Ethernet I/O modules meet diverse industrial automation needs—from fast data acquisition with PET‑7Hxx, scalable I/O with DAS‑8000, via user-friendly ET‑7000 series, to smart edge logic in WISE controllers. Each series brings tailored strengths: sampling speed, modularity, channel variety, or computing power. Combined with IPC2U’s product integration, system designers gain robust, flexible tools for current and future factory, infrastructure, and IoT deployments.

ICP DAS offers a comprehensive range of Ethernet I/O solutions: from high-reliability redundant systems (RIO‑98x0, iDCS‑8830) and specialized vibration loggers, to smart, web-capable, MQTT-enabled remote nodes. Whether tackling mission‑critical infrastructure, IIoT deployments, or compact remote monitoring, IPC2U’s ICP DAS portfolio ensures robust, flexible, and application‑focused automation building blocks.

Why Choose ICP DAS Ethernet I/O?

  • Industrial-grade: Wide temperature range (–25 to 75 °C), high electrical isolation, M12/PoE reliability.
  • Flexible protocols: Support for Modbus TCP/UDP, EtherNet/IP, OPC UA.
  • Extensive ecosystem: Modules fit in racks (DAS), compact standalone units (PET, ET), edge-smart controllers (WISE), with expansion and redundancy options.
  • Scalable deployment: From single-site sensor nodes to large distributed systems.

PET‑7H16M / PET‑7H24M — High‑Speed I/O with PoE

These modules are designed for precision data acquisition and fast response, with PoE (Power over Ethernet) support enabling easier installation without separate power lines.

Use cases: vibration analysis, high-speed data logging, real-time signal processing.

Series highlights: Featuring up to 8 analog inputs and 4 DI/DO channels, with sampling rates up to 200 kS/s and robust triggering options, PET‑7H16M is tailored for high-speed measurement tasks.

Product examples:

  • ICP DAS – PET‑7H16M : 8 × AI, 4 × DI, 4 × DO, PoE — ideal for precise data acquisition. High sampling rate, PoE, Modbus TCP support.

Ethernet High Speed Data Acquisition Module with 8 x AI, 4 x DI, 4 x DO Channel, with PoE (RoHS)

DAS‑8000 — Modular Ethernet Remote I/O

The DAS‑8000 series is a high-performance, modular Ethernet-based remote I/O system designed for large-scale, flexible, and centralized industrial control applications. It features a backplane architecture with hot-swappable I/O modules, redundant communication interfaces, and advanced diagnostics. With support for multiple I/O module types (AI, AO, DI, DO), the DAS‑8000 series is ideal for SCADA/DCS systems that demand reliability, scalability, and fast deployment.

Key features:

  • Rack-mounted modular system with up to 8 I/O slots
  • Hot-swappable I/O cards without system downtime
  • Dual Ethernet ports and optional communication redundancy
  • Protocol support: Modbus TCP, MQTT, SNMP, and more
  • Diagnostic LEDs, watchdogs, and status monitoring
  • Wide temperature operation and industrial-grade EMI protection

Product examples:

  • ICP DAS – DAS‑8421: Modular remote I/O unit with 4 slots, suitable for mid-sized control systems. Compact yet scalable, supports a wide range of I/O modules.
  • ICP DAS – DAS‑8821: Full-sized 8-slot remote I/O rack for high-density I/O deployments. Offers robust Ethernet communication and redundant features for critical systems.

Use cases:

  • Centralized data acquisition and control in process automation
  • SCADA-based monitoring in water treatment or energy facilities
  • I/O expansion in substations, tunnels, and industrial plants
  • Integration into existing Ethernet automation infrastructure with future-proof modularity

ET‑2200 Series — High-Precision Analog Ethernet I/O

The ET‑2200 series from ICP DAS delivers accurate and reliable analog signal acquisition over Ethernet for remote monitoring and control tasks. These modules are designed with industrial-grade isolation, high-resolution analog inputs, and support for multiple protocols including Modbus TCP and MQTT. The series is particularly suited for applications requiring stable, high-precision voltage or current readings in demanding environments.

Key features:

  • High-resolution (16-bit) analog input channels
  • Channel-to-channel and system isolation for signal integrity
  • Modbus TCP, UDP, and MQTT protocol support
  • Built-in web server for easy configuration and data viewing
  • Wide operating temperature range (–25 °C to +75 °C)
  • Watchdog and fail-safe output features

Product examples:

  • ICP DAS – ET‑2217 : 8-channel analog input module (voltage/current) with 16-bit resolution and ±4000 VDC isolation. Ideal for precise voltage and current monitoring in industrial automation. Ethernet I/O Module with 2-port Ethernet Switch, 8/16-ch Analog Inputs (RoHS), 10-48VDC
  • ICP DAS – ET‑2215H : 8-channel high-voltage analog input module (±150 V) with differential input design and high common-mode rejection. Suitable for high-voltage monitoring and energy systems. Ethernet I/O Module with 8-ch High Speed RTD Input, 10-48VDC

Use cases:

  • Energy consumption monitoring in substations or building automation
  • Analog sensor integration in chemical and pharmaceutical plants
  • Remote voltage and current tracking in power distribution
  • Environmental monitoring where precise analog input is critical

OPC UA I/O Module — Seamless Integration for Industrial IIoT

The OPC UA I/O Module series from ICP DAS offers modern, secure, and standardized communication for industrial systems by embedding the OPC UA protocol directly into compact I/O modules. These devices eliminate the need for middleware or gateways, enabling native, platform-independent integration into SCADA, MES, and cloud platforms. Designed for interoperability and long lifecycle automation, OPC UA I/O modules are a cornerstone of future-ready IIoT architectures.

Key features:

  • Built-in OPC UA server and Modbus TCP support
  • Real-time monitoring via secure UA communication
  • Fully interoperable with major SCADA/HMI/PLC systems
  • 2-port Ethernet switch with Daisy-Chain topology
  • DIN-rail mount, wide temperature range (–25 °C to +75 °C)
  • Robust I/O options with channel-to-channel isolation

Product examples:

  • ICP DAS – U-7504M : 4-channel digital output module with sink-type outputs and OPC UA/Modbus TCP dual protocol support. Ideal for remote actuator control in smart factories. OPC UA I/O Module with 4-ch DI, 4-ch AI, 4-ch AO, and 2-port Ethernet Switch (RoHS)
  • ICP DAS – U-7526M : 6-channel relay output + 6 digital input channels, designed for controlling external loads and monitoring contact signals via OPC UA or Modbus TCP. OPC UA I/O Module with 2-ch DI, 2-ch DO, 6-ch AI, 2-ch AO, and 2-port Ethernet Switch (RoHS)

Use cases:

  • Direct integration into OPC UA-enabled SCADA systems
  • Secure I/O communication in Industry 4.0 production lines
  • Monitoring and control in smart energy and facility automation
  • Reducing integration costs in multi-vendor industrial networks

ET‑7000 Series — Web‑Enabled Multi‑I/O

ET‑7000 offers compact Ethernet modules with web interfaces and strong channel variety.

Use cases: standalone sensor monitoring, remote telemetry, small-scale automation.

Key features:

  • Each unit combines AI, AO, DI, DO in one module, with web server interface, Modbus TCP, and optional PoE. Ideal as plug-and-play remote nodes.

Product examples:

  • ICP DAS – ET‑7204 : 4 AI + 4 AO + 4 DI in one compact unit. Ethernet I/O Module with 4-channels AI, 4-channels AO, 4-channels DI (RoHS)
  • ICP DAS – ET‑7005 : 8‑channel thermistor input + 4 isolated outputs—perfect for temperature monitoring and control. Web-Based Ethernet I/O Module, 8-channel Thermistor Input and 4-channel Isolated Output

WISE / IIoT I/O Modules — Smart Edge Logic

WISE series integrates I/O modules with built-in logic and Web UI.

  • autonomous edge logic, IF‑THEN‑ELSE programming, IoT gateway functions.

Series advantage: Quad‑core ARM CPU, MicroSD, Ethernet, serial, GPIO; supports scheduling, triggers, and XV‑board expansion.

Product examples:

  • ICP DAS – WISE‑2841M : IIoT Web Controller with multiple communication ports. IIoT Web Controller with Quad-core ARM CPU, 1.6 GHz, 4GB MicroSD, 2xGbE LAN, 4xCOM, 12...48VDC-in, -25...+75C
  • ICP DAS – WISE‑5236M : Multifunction IoT controller, ideal for complex edge tasks. Web-based Intelligent Multifunction IoT Controller, 32-bit ARM CPU, 4GB microSD, 1x 10/100/1000 Ethernet, 1x RS-232, 2x RS-485, XV boards support

Series Comparison at a Glance

Series Strengths Typical Applications
PET‑7Hxx Ultra‑fast sampling, PoE, triggering Vibration, high-speed monitoring
DAS‑8000 Modular, scalable, hot-swappable Centralized control, process automation
ET‑7000 Web UI, mixed channel types Remote sensing, plug‑and‑play I/O
WISE On-board logic, IIoT-enabled Smart edge applications, autonomous decisions

RIO‑98x0 (Redundancy I/O)

The RIO‑98x0 series is a high‑availability modular Ethernet I/O system featuring dual‑redundant power and communication modules, plus eight hot‑swappable I/O slots. It supports multiple industrial Ethernet protocols (Modbus TCP, EtherCAT, EtherNet/IP), real-time parameter logging to onboard SD, and redundancy with failover under 1 ms—ideal for mission‑critical process control and continuous monitoring systems.

  •  chemical plant safety, energy utility control, redundant sensor networks.

Product examples:

  • ICP DAS – RIO‑9830 : Redundant power and comms, supports 8 analog/digital I/O modules. Redundant Distributed I/O System with Modbus TCP Server, 8xI/O Expansion slots, Includes 2xRPM-D24, 2xRCM-MTCP, Supports 24 VDC, Redundant Power, Operating Temperature -25..70C
  • ICP DAS – RIO‑9840 : EtherCAT-based redundant system for factory automation. Redundant Distributed I/O System with EtherCAT Server, 8xI/O Expansion slots, Includes 2xRPM-D24, 2xRCM-ECAT, Supports 24 VDC, Redundant Power, Operating Temperature -25..70C

Accelerometer Data Logger

The AR series from ICP DAS is designed for advanced vibration and structural monitoring applications. These stand-alone Ethernet-based devices integrate high-precision MEMS accelerometers and embedded data logging capabilities, making them ideal for real-time analysis, predictive maintenance, and structural health diagnostics. With support for time-domain waveform capture, frequency-domain analysis (FFT), and edge-side threshold alerts, the AR series empowers engineers to remotely track vibration patterns and diagnose anomalies before failures occur.

Key features include:

  • Integrated 3-axis MEMS accelerometers
  • Local SD data logging (up to 32 GB)
  • Web interface for configuration and visualization
  • Event-triggered recording and alarm notifications
  • Support for Modbus TCP/UDP and MQTT protocols
  • Wide operating temperature and DIN rail mount design

Product examples:

  • ICP DAS – AR-200 : 3-axis accelerometer with built-in data logger and web interface. Suitable for general-purpose structural health monitoring. 2-Channels Accelerometer Data Logger device (RoHS)
  • ICP DAS – AR-400 : Industrial-grade vibration logger with higher sampling rate and wide dynamic range. Designed for heavy equipment diagnostics. 4-Channels Accelerometer Data Logger device (RoHS)

Use cases:

  • Monitoring vibration in industrial machinery (motors, pumps, compressors)
  • Structural integrity assessment of bridges and buildings
  • Earthquake or tremor detection in critical infrastructure
  • Predictive maintenance in rotating equipment

iDCS‑8830 (Redundancy I/O)

iDCS‑8830 is a compact redundant I/O module with dual communication and hot‑swappable I/O capability. It provides Modbus TCP and other Ethernet protocols, plus LED diagnostics and error indicators—ideal for small‑scale redundant control loops.

Use cases:

  • Redundant control in packaging machines, safety barrier backup.

Product examples:

  • ICP DAS – iDCS‑8830 Redundant I/O : Dual comm modules, 8‑slot I/O, hot swap I/O. Intelligent Remote Redundant Ethernet I/O expansion unit with 2x Power (FPM-D2440) + 2x Communication Module (FCM-MTCP) + 1x 8 I/O slot Backplane

tET/tPET Series

The tET (non‑PoE) and tPET (PoE) compact modules offer mixed digital I/O with 32‑bit counting, frequency measurement, PWM outputs, watchdogs, and push/pull communication modes.

  • Production counters, frequency monitoring (e.g. turbine RPM), remote alarms.

Product examples:

  • ICP DAS – tET‑P2C2 : 2 wet DI + 2 NPN sink DO, PWM support. Tiny Ethernet I/O Module, 2DI/2DO (NPN, Sink)
  • ICP DAS – tPET‑AD2 : 2 AI channels, 16 bit resolution, PoE powered. Tiny PoE Ethernet Module with Isolated 2-ch AI 0 ~ 500 mV, 0 ~ 1 V, 0 ~ 2.5 V, 0 ~ 5 V, 0 ~ 10 V, 0 ~ 20 mA, 4 ~ 20 mA, 12-48VDC-in

MQ‑7200M (MQTT Ethernet I/O Module)

The MQ‑7200M series brings the lightweight MQTT protocol to embedded I/O, with built‑in web/HTTP server, dual Ethernet ports, LAN‑bypass, dual watchdogs, and wide temperature rating.

  • IIoT remote field monitoring, smart building sensor access, low-bandwidth sensor push.

Product examples:

  • ICP DAS – MQ‑7244M: 8 wet DI + 8 sink DO, dual Ethernet, MQTT‑enabled. MQTT I/O Module with 2-port Ethernet Switch, with 8-ch DI and 8-ch DO
  • ICP DAS – MQ‑7253M: 16 dry DI channels for dry contact monitoring. MQTT I/O Module with 2-port Ethernet Switch, with 16-ch DI

ETS‑7200 (Web‑Server I/O Module)

ETS‑7200 modules include a secure web server (HTTP/HTTPS), push‑mode DI, IP filtering, dual Ethernet, watchdog, and push/pull communication.

  • Remote site alarms, secure access control, event logging.

Product examples:

  • ICP DAS – ETS‑7217 : 8 x Channels AI, 4 x Channels DO, Open Collector, Sink (NPN). Ethernet I/O Module with 2-port Ethernet Switch, 8-ch AI (+/-150 mV, +/-500 mV, +/-1 V, +/-5 V, +/-10 V, +/-20 mA, 0 ~ 20 mA and 4 ~ 20 mA) and 4-ch DO, 12-48VDC-in
  • ICP DAS – ETS‑7255 : 8 x Channels DI, 8 x Channels DO, Sink (NPN), Source (PNP). Ethernet I/O Module with 2-port Ethernet Switch, 8-ch DI and 8-ch DO, 12-48VDC-in

Expanded Product & Application Comparison

Series Key Features Best Suited For
RIO‑98x0 Full redundancy, hot-swap, multi-protocol Continuous/process control with zero downtime
iDCS‑8830 Compact redundancy, Ethernet I/O Small-scale redundant systems
Accelerometer Logger Onboard logging, vibration diagnostics Structural/vibration analysis, preventive maintenance
tET/tPET Counting/PWM, PoE, watchdogs, compact Remote event monitoring, frequency/counting tasks
MQ‑7200M MQTT-focused, I/O mix, dual Ethernet IIoT deployments, event-driven sensor networks
ETS‑7200 Secure web, push mode DI, event logging Remote alarms, secure site monitoring

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