Remote I/O modules
DIN-rail analogue and digital modules bring distributed channels into Modbus RTU or Ethernet networks.
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Remote I/O, Signal Conditioning & Energy Monitoring
Convert field signals into reliable engineering data close to the process, with the isolation, scaling and communication needed by PLC, SCADA and cloud systems.
Remote I/O
4–20 mA
Modbus RTU/TCP
Transmitters
Wireless
Energy
Remote I/O
Signal conditioning
Energy data
Source
Analogue, digital, pulse and utility signals
Acquire
Isolate, scale, convert and timestamp
Data
Engineering values and device status
Destination
PLC, SCADA, historian and cloud
Acquisition products
Acquisition Portfolio
The portfolio covers distributed I/O, signal isolation and conversion, temperature and process transmitters, energy measurement, wireless acquisition and configuration software.
Signal conditioners and isolators
Convert, isolate and scale common industrial signals before they reach the control or acquisition system.
Temperature and process transmitters
Interface thermocouples, RTDs and selected process variables to standard industrial outputs.
Energy and utility measurement
Acquire electrical or pulse-based information for asset, feeder and consumption monitoring.
Wireless and cellular links
Extend data acquisition to remote equipment where fixed network installation is impractical.
Configuration software
Configure ranges, scaling, communication and diagnostics with product-specific engineering tools.
NOVUS DigiRail Connect remote I/O
DigiRail Connect combines configurable analogue and digital channels with Modbus RTU over RS-485 and Modbus TCP over Ethernet. In the overall automation flow, it acquires, conditions field values and makes them available through Modbus RTU or Modbus TCP for PLCs, SCADA systems, gateways and monitoring platforms.
- Mixed field-signal acquisition in a DIN-rail format
- Modbus RTU and Modbus TCP communication paths
- Configuration and diagnostics through the supported engineering software
Applications
Solutions
Select the acquisition layer from signal type, channel count, isolation, accuracy, location, communication and environmental requirements.
Legacy-machine retrofit
Add remote I/O and protocol conversion without replacing the existing PLC or field instruments.
Distributed process measurement
Place channels near sensors to shorten analogue cable runs and simplify cabinet wiring.
Utility and energy visibility
Bring feeder, transformer, pulse and process-consumption data into the same monitoring environment.
Remote assets
Combine local acquisition with Wi-Fi or cellular connectivity for geographically distributed equipment.
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Remote I/O
Remote I/O modules collect analogue, digital and pulse signals near the process and expose them through a standard industrial network.
Analogue inputs
Acquire voltage, current, thermocouple or RTD signals according to module capability.
Digital and pulse channels
Read machine states, counters and pulse outputs from meters or equipment.
Modbus integration
Use Modbus RTU or Modbus TCP to connect distributed channels to PLC, SCADA or gateway systems.
Channel engineering
Check resolution, update rate, isolation, common-mode limits and fault behaviour for the actual signal source.
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Signal Conditioning
Signal conditioning protects the receiving system and presents the field measurement in a defined electrical range.
Isolation
Break unwanted ground paths and limit the propagation of field-side faults where the selected conditioner provides galvanic isolation.
Conversion
Translate between sensor inputs and standard voltage or current outputs used by the control system.
Linearization and scaling
Convert non-linear sensor characteristics into engineering ranges when supported by the selected transmitter or conditioner.
Cabinet integration
Plan channel density, heat, terminal access and power distribution for DIN-rail installations.
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Transmitters
Transmitters provide the first controlled conversion between the sensing element and the plant signal standard.
Temperature transmitters
Connect thermocouples and RTDs through head, DIN-rail, duct or probe-mounted formats.
Humidity and temperature
Measure environmental or process-air conditions with outputs selected for the monitoring system.
Pressure and process variables
Use the appropriate transmitter range, wetted material and process connection for the medium.
Configuration and calibration
Record input type, range, units and output scaling so maintenance can reproduce the setup.
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Energy Monitoring
Energy monitoring should connect electrical measurements with the equipment, production period or utility process that explains them.
Electrical quantities
Acquire voltage, current, power, energy or pulse outputs through suitable meters and interfaces.
Transformer and feeder monitoring
Collect operating values from distributed electrical assets and forward them to a supervisory system.
Consumption context
Associate energy data with machine state, shift, batch or production output for meaningful comparison.
Alarm limits
Define warning and alarm thresholds from equipment and utility requirements rather than from generic percentages.
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Wireless & Remote I/O
Wireless links are useful where cabling is difficult, but radio coverage, buffering and recovery must be engineered explicitly.
Wireless Modbus extension
Bridge selected RS-485 segments without changing the field-device protocol.
Wi-Fi acquisition
Connect supported loggers and gateways to local networks for configuration and data transfer.
Cellular access
Use 4G connectivity for remote sites with suitable VPN, access-control and data-volume policies.
Store and forward
Retain measurements locally where the device supports buffering during network interruption.
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Configuration
Product configuration tools reduce wiring and scaling errors when settings are managed as engineering data rather than left only on the installed device.
Input and range setup
Select sensor type, engineering range and filtering for each channel.
Communication parameters
Set address, baud rate, IP configuration and protocol role consistently across the network.
Download and diagnostics
Use supported software to read configuration, inspect status and retrieve recorded data.
Configuration records
Store exported settings with panel drawings and commissioning documentation.
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Integration
The acquisition layer can feed multiple consumers, but one system should remain authoritative for control and alarm actions.
PLC integration
Map remote channels into the control program with clear scaling and fault handling.
SCADA and historian
Expose measurements, quality and timestamps for supervisory display and historical analysis.
MQTT and cloud
Publish selected data from supported IoT gateways without bypassing the plant security architecture.
Dashboard handoff
Carry engineering units, equipment identity and alarm state into the monitoring layer.
Application engineering
Engineering
Remote I/O and signal-conditioning systems require a signal list, network loading check, power and enclosure design, addressing plan and end-to-end loop verification.
Signal inventory
Document input type, range, source impedance, isolation need and required update rate.
Network loading
Check Modbus polling interval, device count, retries and expected data volume.
Power and enclosure
Size the DC supply, cabinet space and thermal margin for the installed modules.
Loop verification
Inject known values and confirm the displayed engineering result from field terminal to application.