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DIO-8/8H(FIT)
Ethernet isolated 8/8 DIO 36..48V Module
270,00 EUR
including VAT 321.30 EUR
- Ethernet Connectivity:
The DIO-8/8H(FIT) communicates via Ethernet, enabling remote digital I/O control and monitoring over standard TCP/IP networks. This allows integration into SCADA, PLC, and PC-based automation systems.
- Opto-Isolated I/O Channels:
Eight optically isolated input channels and eight optically isolated open-collector output channels provide galvanic isolation between field wiring and internal logic, protecting the host system from surges and ground loops.
- High Voltage Range (36–48 V DC):
Designed for industrial environments, the module supports high-voltage digital signals, making it suitable for factory automation, process control, and equipment monitoring.
- DIN Rail Mounting:
The compact housing includes a 35 mm DIN rail mounting mechanism for easy installation in control panels or enclosures.
- Noise Immunity and Reliability:
Optical isolation and robust circuit design ensure stable operation in electrically noisy environments.
- Modular Expansion:
The FIT series modules can be combined with CONTEC’s USB or Ethernet base units (e.g., DIO-8/8(USB)GY) to expand I/O capacity without additional host interfaces.
- Status Indicators:
Front-panel LEDs display link status, input activity, and output states for quick diagnostics.
- Compact and Lightweight:
The small form factor (approx. 50.4 × 64.7 × 94 mm) and low weight (~100 g) allow dense installation in limited spaces.
- Industrial-Grade Design:
Operating temperature range of 0–50 °C and humidity tolerance of 10–90 % RH (non-condensing) ensure reliable performance in industrial environments.
The DIO-8/8H(FIT) communicates via Ethernet, enabling remote digital I/O control and monitoring over standard TCP/IP networks. This allows integration into SCADA, PLC, and PC-based automation systems.
- Opto-Isolated I/O Channels:
Eight optically isolated input channels and eight optically isolated open-collector output channels provide galvanic isolation between field wiring and internal logic, protecting the host system from surges and ground loops.
- High Voltage Range (36–48 V DC):
Designed for industrial environments, the module supports high-voltage digital signals, making it suitable for factory automation, process control, and equipment monitoring.
- DIN Rail Mounting:
The compact housing includes a 35 mm DIN rail mounting mechanism for easy installation in control panels or enclosures.
- Noise Immunity and Reliability:
Optical isolation and robust circuit design ensure stable operation in electrically noisy environments.
- Modular Expansion:
The FIT series modules can be combined with CONTEC’s USB or Ethernet base units (e.g., DIO-8/8(USB)GY) to expand I/O capacity without additional host interfaces.
- Status Indicators:
Front-panel LEDs display link status, input activity, and output states for quick diagnostics.
- Compact and Lightweight:
The small form factor (approx. 50.4 × 64.7 × 94 mm) and low weight (~100 g) allow dense installation in limited spaces.
- Industrial-Grade Design:
Operating temperature range of 0–50 °C and humidity tolerance of 10–90 % RH (non-condensing) ensure reliable performance in industrial environments.
1. Product Overview
Product Name: Ethernet Isolated 8/8 Digital I/O Module
Model: DIO-8/8H(FIT)
Series: FIT Series (Expansion Module Series for CONTEC Digital I/O Systems)
Article Number: DIO-8/8H(FIT)
Manufacturer: CONTEC CO., LTD., Osaka, Japan
The CONTEC DIO-8/8H(FIT) is an Ethernet-based, optically isolated digital input/output module designed for industrial and embedded control applications. It provides eight opto-isolated digital input channels and eight opto-isolated open-collector output channels, supporting 36–48 V DC operation. The module is engineered for DIN rail mounting and integrates seamlessly into distributed I/O networks requiring high-voltage isolation, noise immunity, and reliable Ethernet communication.
2. Key Features
- Ethernet Connectivity:
The DIO-8/8H(FIT) communicates via Ethernet, enabling remote digital I/O control and monitoring over standard TCP/IP networks. This allows integration into SCADA, PLC, and PC-based automation systems.
- Opto-Isolated I/O Channels:
Eight optically isolated input channels and eight optically isolated open-collector output channels provide galvanic isolation between field wiring and internal logic, protecting the host system from surges and ground loops.
- High Voltage Range (36–48 V DC):
Designed for industrial environments, the module supports high-voltage digital signals, making it suitable for factory automation, process control, and equipment monitoring.
- DIN Rail Mounting:
The compact housing includes a 35 mm DIN rail mounting mechanism for easy installation in control panels or enclosures.
- Noise Immunity and Reliability:
Optical isolation and robust circuit design ensure stable operation in electrically noisy environments.
- Modular Expansion:
The FIT series modules can be combined with CONTEC’s USB or Ethernet base units (e.g., DIO-8/8(USB)GY) to expand I/O capacity without additional host interfaces.
- Status Indicators:
Front-panel LEDs display link status, input activity, and output states for quick diagnostics.
- Compact and Lightweight:
The small form factor (approx. 50.4 × 64.7 × 94 mm) and low weight (~100 g) allow dense installation in limited spaces.
- Industrial-Grade Design:
Operating temperature range of 0–50 °C and humidity tolerance of 10–90 % RH (non-condensing) ensure reliable performance in industrial environments.
3. Technical Specifications
| Parameter | Specification |
|----------------|------------------|
| Input Channels | 8 opto-isolated digital inputs |
| Output Channels | 8 opto-isolated open-collector outputs (current sink type) |
| Input Voltage Range | 36–48 V DC (±15 %) |
| Input Resistance | Approx. 3 kΩ |
| Input ON Current | ≥ 3.4 mA |
| Input OFF Current | ≤ 0.16 mA |
| Input Response Time | ≤ 1 ms |
| Output Voltage Range | 36–48 V DC (±15 %) |
| Output Current (per channel) | Max. 150 mA |
| Output Type | Opto-isolated open collector (current sink) |
| Response Time (Output) | ≤ 1 ms |
| Isolation Method | Opto-coupler isolation between I/O and logic |
| External Power Supply | 36–48 V DC |
| Power Consumption | +5 V DC 150 mA (typical for FIT expansion modules) |
| Dimensions (W × D × H) | 50.4 × 64.7 × 94.0 mm (excluding protrusions) |
| Weight | Approx. 100 g |
| Mounting | 35 mm DIN rail (EN 60715) |
| Operating Temperature | 0 – 50 °C |
| Operating Humidity | 10 – 90 % RH (non-condensing) |
| Storage Temperature | –10 – 60 °C |
| Allowable Cable Length | Approx. 50 m (depending on wiring environment) |
| Compatible Wire Gauge | AWG 28 – 20 |
| Connector Type | FK-MC0.5/9-ST-2.5 (Phoenix Contact compatible) |
| Nominal Current (Connector) | 4 A max |
| Housing Material | Industrial-grade ABS resin |
| Cooling Method | Natural air convection |
4. Functionality
The DIO-8/8H(FIT) functions as an Ethernet-connected digital I/O interface module. It converts Ethernet-based control commands into isolated digital signals for field devices and transmits input states back to the host system.
Operation Principle:
- Inputs: Each input channel detects ON/OFF states of external devices such as sensors, switches, or PLC outputs. The opto-coupler isolation ensures that field voltages do not affect internal logic.
- Outputs: Each output channel drives external loads (relays, lamps, solenoids) through open-collector transistors. External 36–48 V DC power is required for output circuits.
- Communication: The module exchanges data packets over Ethernet using standard TCP/IP or UDP protocols, depending on the host software configuration.
- Use Cases:
- Industrial automation and machine control
- Remote monitoring and data acquisition
- Building management systems
- Laboratory instrumentation
- Integration with SCADA or PLC systems
Compatibility:
The DIO-8/8H(FIT) is compatible with CONTEC’s Ethernet I/O control software and API libraries. It can also be used as an expansion module for USB-based systems (e.g., DIO-8/8(USB)GY) when connected through a compatible base unit.
5. Components & Accessories
Included Items:
- DIO-8/8H(FIT) module (1 unit)
- Interface connector plugs (FK-MC0.5/9-ST-2.5 × 2)
- Power connector (MC1.5/3-ST-3.5 × 1)
- Protective rubber feet (× 4)
- Mounting magnets (× 2)
- Quick start guide
Optional Accessories:
- AC Adapter: POA200-20 (Input 90–264 V AC, Output 5 V DC 2.0 A)
- AC–DC Power Supplies:
- POW-AD13GY (85–132 V AC → 5 V DC 3.0 A)
- POW-AD22GY (85–265 V AC → 5 V DC 2.0 A)
- DC–DC Power Supplies:
- POW-DD10GY (10–30 V DC → 5 V DC 3.0 A)
- POW-DD43GY (30–50 V DC → 5 V DC 3.0 A)
- Expansion Modules:
- DIO-8/8(FIT)GY (8 In / 8 Out expansion)
- DI-16(FIT)GY (16 In expansion)
- DO-16(FIT)GY (16 Out expansion)
6. Installation & Setup
Mounting Options:
- DIN Rail Mounting:
The module includes a one-touch latch mechanism for 35 mm DIN rails. Insert the upper edge onto the rail and press the lower side until the latch clicks. To remove, release the latch with a screwdriver and lift the module off.
- Magnet Mounting:
Two magnets allow temporary attachment to metal surfaces for testing or non-permanent installations.
- Desk Mounting:
Use the supplied protective rubber feet to prevent vibration and ensure ventilation.
Electrical Connections:
- Input/Output Wiring:
Use the supplied screwless connectors. Strip 7–8 mm of insulation, press the orange release button, insert the wire, and release to secure.
- Compatible wire: AWG 28–20
- Recommended external power: 36–48 V DC
- Power Supply Connection:
Connect +5 V DC (±5 %) to the MC1.5/3-ST-3.5 power connector. Ground the FG terminal for noise suppression.
Configuration:
- Device ID Setting:
Each module includes rotary switches for Device ID (0–3 for expansion modules). The base module ID is fixed at 0.
- Network Setup:
Configure IP address and communication parameters via CONTEC’s configuration utility or API functions.
Precautions:
- Do not connect or disconnect modules while powered.
- Avoid covering ventilation slits.
- Ground the module in noisy environments.
- Use ferrite cores on cables if electromagnetic interference is present.
7. Performance & Capabilities
- Response Speed:
Input and output response times are ≤ 1 ms, suitable for real-time control and monitoring.
- Data Throughput:
Ethernet communication supports high-speed data exchange, enabling rapid polling and control cycles.
- Capacity:
Each module provides 8 inputs and 8 outputs; up to three expansion modules can be stacked, achieving 32 inputs and 32 outputs per Ethernet node.
- Efficiency:
Low power consumption (150 mA @ 5 V DC) allows multiple modules to operate from a single power supply.
- Limitations:
- Output current limited to 150 mA per channel.
- Total output current should not exceed connector ratings.
- Surge protection required for inductive loads.
- Cable length limited to ~50 m for reliable signal integrity.
8. Standards & Compliance
- Electrical Safety:
Designed for SELV (Safety Extra Low Voltage) circuits.
- Isolation:
Opto-coupler isolation between I/O and logic circuits ensures compliance with industrial noise immunity standards.
- Environmental Compliance:
RoHS-compliant construction (lead-free solder, halogen-free materials).
- EMC Compliance:
Meets industrial electromagnetic compatibility requirements when installed with proper grounding and ferrite cores.
- Mounting Standard:
DIN rail per EN 60715.
- USB/Ethernet Protocol Compliance:
Compatible with IEEE 802.3 Ethernet standards (for Ethernet variant) and USB 2.0 (for USB-based base modules).
9. Additional Information
Warranty:
CONTEC provides a limited one-year warranty covering defects in materials and workmanship. The warranty excludes damage due to misuse, modification, or improper installation. Repairs require an RMA (Return Merchandise Authorization) and proof of purchase.
Support & Maintenance:
- Technical Support:
Available via CONTEC’s global websites:
- Japan: [www.contec.co.jp](http://www.contec.co.jp)
- Global: [www.contec.com](http://www.contec.com)
- China: [www.contec.com.cn](http://www.contec.com.cn)
- Software & Drivers:
Updated drivers, firmware, and sample programs are available for download.
- Firmware Updates:
Firmware can be upgraded via CONTEC’s utility tools. Modules must be set to Device ID = FFh for firmware update mode.
- Maintenance:
Periodically inspect ventilation openings and connectors for dust or debris. Store modules in anti-static packaging when not in use.
- Disposal:
Dispose of electronic components according to local environmental regulations.
Safety Notes:
- Do not operate in environments with flammable gases or excessive dust.
- Avoid mechanical shock or bending of the module.
- Disconnect power immediately if abnormal heat or odor is detected.
- Do not open or modify the casing; internal service should be performed only by CONTEC.
Summary
The CONTEC DIO-8/8H(FIT) is a robust, Ethernet-enabled digital I/O module engineered for industrial automation and distributed control systems. With eight opto-isolated inputs and eight opto-isolated open-collector outputs supporting 36–48 V DC, it provides reliable signal interfacing for high-voltage industrial equipment. Its modular FIT architecture allows seamless expansion, while DIN rail mounting and screwless connectors simplify installation. The module’s optical isolation, compact design, and compatibility with CONTEC’s software ecosystem make it an ideal choice for engineers seeking scalable, noise-immune, and network-ready digital I/O solutions.
Product Name: Ethernet Isolated 8/8 Digital I/O Module
Model: DIO-8/8H(FIT)
Series: FIT Series (Expansion Module Series for CONTEC Digital I/O Systems)
Article Number: DIO-8/8H(FIT)
Manufacturer: CONTEC CO., LTD., Osaka, Japan
The CONTEC DIO-8/8H(FIT) is an Ethernet-based, optically isolated digital input/output module designed for industrial and embedded control applications. It provides eight opto-isolated digital input channels and eight opto-isolated open-collector output channels, supporting 36–48 V DC operation. The module is engineered for DIN rail mounting and integrates seamlessly into distributed I/O networks requiring high-voltage isolation, noise immunity, and reliable Ethernet communication.
2. Key Features
- Ethernet Connectivity:
The DIO-8/8H(FIT) communicates via Ethernet, enabling remote digital I/O control and monitoring over standard TCP/IP networks. This allows integration into SCADA, PLC, and PC-based automation systems.
- Opto-Isolated I/O Channels:
Eight optically isolated input channels and eight optically isolated open-collector output channels provide galvanic isolation between field wiring and internal logic, protecting the host system from surges and ground loops.
- High Voltage Range (36–48 V DC):
Designed for industrial environments, the module supports high-voltage digital signals, making it suitable for factory automation, process control, and equipment monitoring.
- DIN Rail Mounting:
The compact housing includes a 35 mm DIN rail mounting mechanism for easy installation in control panels or enclosures.
- Noise Immunity and Reliability:
Optical isolation and robust circuit design ensure stable operation in electrically noisy environments.
- Modular Expansion:
The FIT series modules can be combined with CONTEC’s USB or Ethernet base units (e.g., DIO-8/8(USB)GY) to expand I/O capacity without additional host interfaces.
- Status Indicators:
Front-panel LEDs display link status, input activity, and output states for quick diagnostics.
- Compact and Lightweight:
The small form factor (approx. 50.4 × 64.7 × 94 mm) and low weight (~100 g) allow dense installation in limited spaces.
- Industrial-Grade Design:
Operating temperature range of 0–50 °C and humidity tolerance of 10–90 % RH (non-condensing) ensure reliable performance in industrial environments.
3. Technical Specifications
| Parameter | Specification |
|----------------|------------------|
| Input Channels | 8 opto-isolated digital inputs |
| Output Channels | 8 opto-isolated open-collector outputs (current sink type) |
| Input Voltage Range | 36–48 V DC (±15 %) |
| Input Resistance | Approx. 3 kΩ |
| Input ON Current | ≥ 3.4 mA |
| Input OFF Current | ≤ 0.16 mA |
| Input Response Time | ≤ 1 ms |
| Output Voltage Range | 36–48 V DC (±15 %) |
| Output Current (per channel) | Max. 150 mA |
| Output Type | Opto-isolated open collector (current sink) |
| Response Time (Output) | ≤ 1 ms |
| Isolation Method | Opto-coupler isolation between I/O and logic |
| External Power Supply | 36–48 V DC |
| Power Consumption | +5 V DC 150 mA (typical for FIT expansion modules) |
| Dimensions (W × D × H) | 50.4 × 64.7 × 94.0 mm (excluding protrusions) |
| Weight | Approx. 100 g |
| Mounting | 35 mm DIN rail (EN 60715) |
| Operating Temperature | 0 – 50 °C |
| Operating Humidity | 10 – 90 % RH (non-condensing) |
| Storage Temperature | –10 – 60 °C |
| Allowable Cable Length | Approx. 50 m (depending on wiring environment) |
| Compatible Wire Gauge | AWG 28 – 20 |
| Connector Type | FK-MC0.5/9-ST-2.5 (Phoenix Contact compatible) |
| Nominal Current (Connector) | 4 A max |
| Housing Material | Industrial-grade ABS resin |
| Cooling Method | Natural air convection |
4. Functionality
The DIO-8/8H(FIT) functions as an Ethernet-connected digital I/O interface module. It converts Ethernet-based control commands into isolated digital signals for field devices and transmits input states back to the host system.
Operation Principle:
- Inputs: Each input channel detects ON/OFF states of external devices such as sensors, switches, or PLC outputs. The opto-coupler isolation ensures that field voltages do not affect internal logic.
- Outputs: Each output channel drives external loads (relays, lamps, solenoids) through open-collector transistors. External 36–48 V DC power is required for output circuits.
- Communication: The module exchanges data packets over Ethernet using standard TCP/IP or UDP protocols, depending on the host software configuration.
- Use Cases:
- Industrial automation and machine control
- Remote monitoring and data acquisition
- Building management systems
- Laboratory instrumentation
- Integration with SCADA or PLC systems
Compatibility:
The DIO-8/8H(FIT) is compatible with CONTEC’s Ethernet I/O control software and API libraries. It can also be used as an expansion module for USB-based systems (e.g., DIO-8/8(USB)GY) when connected through a compatible base unit.
5. Components & Accessories
Included Items:
- DIO-8/8H(FIT) module (1 unit)
- Interface connector plugs (FK-MC0.5/9-ST-2.5 × 2)
- Power connector (MC1.5/3-ST-3.5 × 1)
- Protective rubber feet (× 4)
- Mounting magnets (× 2)
- Quick start guide
Optional Accessories:
- AC Adapter: POA200-20 (Input 90–264 V AC, Output 5 V DC 2.0 A)
- AC–DC Power Supplies:
- POW-AD13GY (85–132 V AC → 5 V DC 3.0 A)
- POW-AD22GY (85–265 V AC → 5 V DC 2.0 A)
- DC–DC Power Supplies:
- POW-DD10GY (10–30 V DC → 5 V DC 3.0 A)
- POW-DD43GY (30–50 V DC → 5 V DC 3.0 A)
- Expansion Modules:
- DIO-8/8(FIT)GY (8 In / 8 Out expansion)
- DI-16(FIT)GY (16 In expansion)
- DO-16(FIT)GY (16 Out expansion)
6. Installation & Setup
Mounting Options:
- DIN Rail Mounting:
The module includes a one-touch latch mechanism for 35 mm DIN rails. Insert the upper edge onto the rail and press the lower side until the latch clicks. To remove, release the latch with a screwdriver and lift the module off.
- Magnet Mounting:
Two magnets allow temporary attachment to metal surfaces for testing or non-permanent installations.
- Desk Mounting:
Use the supplied protective rubber feet to prevent vibration and ensure ventilation.
Electrical Connections:
- Input/Output Wiring:
Use the supplied screwless connectors. Strip 7–8 mm of insulation, press the orange release button, insert the wire, and release to secure.
- Compatible wire: AWG 28–20
- Recommended external power: 36–48 V DC
- Power Supply Connection:
Connect +5 V DC (±5 %) to the MC1.5/3-ST-3.5 power connector. Ground the FG terminal for noise suppression.
Configuration:
- Device ID Setting:
Each module includes rotary switches for Device ID (0–3 for expansion modules). The base module ID is fixed at 0.
- Network Setup:
Configure IP address and communication parameters via CONTEC’s configuration utility or API functions.
Precautions:
- Do not connect or disconnect modules while powered.
- Avoid covering ventilation slits.
- Ground the module in noisy environments.
- Use ferrite cores on cables if electromagnetic interference is present.
7. Performance & Capabilities
- Response Speed:
Input and output response times are ≤ 1 ms, suitable for real-time control and monitoring.
- Data Throughput:
Ethernet communication supports high-speed data exchange, enabling rapid polling and control cycles.
- Capacity:
Each module provides 8 inputs and 8 outputs; up to three expansion modules can be stacked, achieving 32 inputs and 32 outputs per Ethernet node.
- Efficiency:
Low power consumption (150 mA @ 5 V DC) allows multiple modules to operate from a single power supply.
- Limitations:
- Output current limited to 150 mA per channel.
- Total output current should not exceed connector ratings.
- Surge protection required for inductive loads.
- Cable length limited to ~50 m for reliable signal integrity.
8. Standards & Compliance
- Electrical Safety:
Designed for SELV (Safety Extra Low Voltage) circuits.
- Isolation:
Opto-coupler isolation between I/O and logic circuits ensures compliance with industrial noise immunity standards.
- Environmental Compliance:
RoHS-compliant construction (lead-free solder, halogen-free materials).
- EMC Compliance:
Meets industrial electromagnetic compatibility requirements when installed with proper grounding and ferrite cores.
- Mounting Standard:
DIN rail per EN 60715.
- USB/Ethernet Protocol Compliance:
Compatible with IEEE 802.3 Ethernet standards (for Ethernet variant) and USB 2.0 (for USB-based base modules).
9. Additional Information
Warranty:
CONTEC provides a limited one-year warranty covering defects in materials and workmanship. The warranty excludes damage due to misuse, modification, or improper installation. Repairs require an RMA (Return Merchandise Authorization) and proof of purchase.
Support & Maintenance:
- Technical Support:
Available via CONTEC’s global websites:
- Japan: [www.contec.co.jp](http://www.contec.co.jp)
- Global: [www.contec.com](http://www.contec.com)
- China: [www.contec.com.cn](http://www.contec.com.cn)
- Software & Drivers:
Updated drivers, firmware, and sample programs are available for download.
- Firmware Updates:
Firmware can be upgraded via CONTEC’s utility tools. Modules must be set to Device ID = FFh for firmware update mode.
- Maintenance:
Periodically inspect ventilation openings and connectors for dust or debris. Store modules in anti-static packaging when not in use.
- Disposal:
Dispose of electronic components according to local environmental regulations.
Safety Notes:
- Do not operate in environments with flammable gases or excessive dust.
- Avoid mechanical shock or bending of the module.
- Disconnect power immediately if abnormal heat or odor is detected.
- Do not open or modify the casing; internal service should be performed only by CONTEC.
Summary
The CONTEC DIO-8/8H(FIT) is a robust, Ethernet-enabled digital I/O module engineered for industrial automation and distributed control systems. With eight opto-isolated inputs and eight opto-isolated open-collector outputs supporting 36–48 V DC, it provides reliable signal interfacing for high-voltage industrial equipment. Its modular FIT architecture allows seamless expansion, while DIN rail mounting and screwless connectors simplify installation. The module’s optical isolation, compact design, and compatibility with CONTEC’s software ecosystem make it an ideal choice for engineers seeking scalable, noise-immune, and network-ready digital I/O solutions.
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