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- Allen Bradley
- 1794-ADN
- ControlNet Flex I/O Adapter Module
- USA
- 118 mm × 35 mm × 87 mm
- 0.28kg
- Xiamen, China
- New & In Stock
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Technical Report: FLEX I/O DeviceNet Adapter 1794-ADN
1. Product Overview
The 1794-ADN is a FLEX I/O DeviceNet communication adapter module used in distributed industrial automation systems. It functions as a network interface between FLEX I/O terminal bases and a DeviceNet fieldbus network.
This module acts as a DeviceNet slave adapter, allowing a PLC scanner (master) to control remote FLEX I/O modules over a standardized industrial network.
It supports up to 8 FLEX I/O modules per node, making it suitable for compact distributed I/O systems.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: Distributed I/O Communication Adapter
- Technology Field: Industrial Fieldbus / DeviceNet Networking
- Manufacturing Origin: United States (varies by production batch)
3. Product Series
- Series Name: FLEX I/O Series
- System Architecture: Modular distributed I/O platform
- Network Type: DeviceNet (CAN-based fieldbus)
- Installation Type: DIN rail / panel-mounted system
The FLEX I/O family is designed for scalable remote I/O integration in industrial control systems.
4. Product Introduction
The 1794-ADN provides communication between FLEX I/O modules and a DeviceNet network.
Key functions include:
- DeviceNet network communication at multiple baud rates
- I/O data exchange between PLC master and remote modules
- Support for up to 8 I/O modules per adapter
- Real-time cyclic and explicit messaging
- Modular expansion of distributed control systems
It is commonly used in systems requiring cost-effective fieldbus communication with flexible wiring architecture.
5. Technical Parameters
5.1 Communication Performance
| Parameter | Value |
|---|---|
| Communication Protocol | DeviceNet |
| Network Speed | 125 / 250 / 500 kbps |
| Max I/O Modules | up to 8 FLEX I/O modules |
| Network Topology | Trunk/drop CAN-based architecture |
| Cable Type | DeviceNet shielded twisted pair |
| Message Type | Cyclic I/O + Explicit messaging |
Reference: DeviceNet adapter specifications and FLEX I/O system documentation
5.2 Electrical Performance
| Parameter | Value |
|---|---|
| Input Voltage Range | 19.2–31.2 V DC |
| Nominal Voltage | 24 V DC |
| FlexBus Output | 5 V DC internal backplane supply |
| FlexBus Current Capacity | up to 640 mA @ 5 V DC |
| Power Consumption | ~4–8 W (system dependent) |
| Isolation Voltage | industrial reinforced isolation |
Reference electrical characteristics aligned with FLEX I/O adapter platform data
5.3 System Capability
| Parameter | Value |
|---|---|
| System Capacity | up to 8 FLEX I/O modules |
| Node Type | DeviceNet slave adapter |
| Configuration Tool | PLC programming software environment |
| Compatibility | FLEX I/O terminal base system |
| Network Role | Fieldbus I/O interface node |
5.4 Physical Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 118 mm |
| Width | 50 mm |
| Depth | 87 mm |
| Mounting Type | DIN rail / panel mount |
| Weight | 0.28 kg (approx.) |
| Form Factor | Single-slot communication adapter |
5.5 Environmental Conditions
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Vibration Resistance | Industrial standard (5G typical) |
| Shock Resistance | up to 30G |
6. Product Applications
The 1794-ADN is widely used in distributed automation systems requiring DeviceNet fieldbus communication.
Typical application areas:
- Industrial manufacturing lines
- Packaging machinery systems
- Material handling and conveyor systems
- Motor control systems
- Automotive production automation
- Process control systems
- Distributed sensor networks
- Machine cell automation
Functional role:
- DeviceNet network interface node
- Distributed I/O data acquisition module
- PLC-to-field device communication bridge
- Modular automation expansion interface
7. Product Advantages
7.1 Flexible Fieldbus Integration
Supports DeviceNet communication for easy integration into existing industrial networks.
7.2 Modular Expansion Capability
Supports up to 8 FLEX I/O modules per node, reducing wiring complexity.
7.3 Multi-Speed Communication
Selectable baud rates (125 / 250 / 500 kbps) allow flexible system design.
7.4 Stable Industrial Performance
Designed for electrically noisy environments with high reliability.
7.5 Compact Distributed Architecture
Reduces centralized cabinet size and simplifies system expansion.
7.6 Cost-Effective Networking
DeviceNet provides efficient communication without requiring high-cost Ethernet infrastructure.
8. Recommended Models (Same Series / Related Modules)
8.1 FLEX I/O Network Adapters
| Model | Description | Key Parameters |
|---|---|---|
| 1794-ADNK | Enhanced DeviceNet adapter | Improved diagnostics support |
| 1794-ACN | ControlNet adapter | 5 Mbps deterministic network |
| 1794-ACNR15 | Redundant ControlNet adapter | Dual-channel redundancy |
| 1794-AENTR | Ethernet/IP adapter | 10/100 Mbps Ethernet communication |
| 1794-APB | PROFIBUS adapter | Up to 12 Mbps fieldbus |
9. Recommended Models (Same Brand – Popular Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1756-EN2T | Ethernet communication module | ControlLogix network interface |
| 1756-IB16 | Digital input module | 16-channel 24V DC input |
| 1756-OB16E | Digital output module | Electronic sourcing output |
| 1769-L33ER | PLC controller | CompactLogix high-performance CPU |
| 1769-PA4 | Power supply module | High-capacity AC input supply |
10. Summary
The 1794-ADN is a DeviceNet-based FLEX I/O adapter designed for distributed industrial automation systems.
Its modular structure, flexible baud rate communication, and robust industrial design make it suitable for medium-complexity fieldbus networks and scalable I/O architectures.