The Allen Bradley 1794-ADN is a FLEX I/O DeviceNet adapter module designed to integrate distributed FLEX I/O systems into a DeviceNet industrial communication network. It acts as a communication interface between a PLC scanner and up to 8 FLEX I/O modules, enabling stable and deterministic data exchange in machine control and process automation environments.
As part of the Allen-Bradley FLEX I/O family, the 1794-ADN is widely used in legacy and mid-generation automation systems where DeviceNet remains the primary fieldbus. It provides a compact, modular, and cost-effective solution for remote I/O expansion while maintaining reliable real-time performance.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model Number | 1794-ADN |
| Product Family | FLEX I/O |
| Module Type | DeviceNet Adapter Module |
| Communication Protocol | DeviceNet |
| Network Speed | Up to 500 kbps |
| Input Voltage | 24 V DC (19.2–31.2 V DC) |
| Current Consumption | Approx. 400 mA |
| I/O Capacity | Up to 8 FLEX I/O modules |
| FlexBus Output Current | Max 640 mA @ 5 V DC |
| Isolation Voltage | Approx. 850 V DC |
| Power Dissipation | ~4–5 W |
| Function | Remote I/O communication interface |
| Network Topology | DeviceNet trunk-line architecture |
| Mounting Type | DIN rail / open-style cabinet mounting |
| Status Indicators | Module, network, and I/O diagnostics LEDs |
Physical Dimensions & Weight
| Mechanical Parameter | Specification |
|---|---|
| Overall Dimensions (L × W × H) | Approx. 69 × 94 × 87 mm |
| Net Weight | Approx. 0.22–0.25 kg |
Recommended Related Models
The 1794-ADN is typically used in DeviceNet-based FLEX I/O systems with compatible I/O modules and communication devices.
| Related Model | Description |
|---|---|
| 1794-IB16 | Digital Input Module |
| 1794-OB16 | Digital Output Module |
| 1794-IE8 | Analog Input Module |
| 1794-OE4 | Analog Output Module |
| 1794-TB3 | Terminal Base Unit |
| 1794-TB2 | Terminal Base Unit |
| 1794-ADN15 | Enhanced DeviceNet Adapter |
| 1756-DNB | ControlLogix DeviceNet Scanner Module |
| 1734-ADN | POINT I/O DeviceNet Adapter |
| 1783-US8T | Industrial Ethernet Switch |
Popular Allen Bradley Automation Products
Allen Bradley automation platforms are widely used in industrial control systems for robust communication, flexible I/O expansion, and long lifecycle support.
| Popular Model | Product Category |
|---|---|
| 1756-L85E | ControlLogix Controller |
| 1769-L36ERM | CompactLogix Controller |
| 5069-IF8 | Analog I/O Module |
| 2711P-T12C4D8 | PanelView HMI |
| 20G11NC072AA0NNNNN | PowerFlex 755 Drive |
| 1734-AENTR | POINT I/O Adapter |
| 1606-XLS240E | Industrial Power Supply |
| 1756-EN2TR | Ethernet/IP Communication Module |
| 1794-IE8 | FLEX I/O Analog Module |
| 25B-D013N114 | PowerFlex 525 Drive |
