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- Allen Bradley
- 1794-AENTR
- ControlNet Flex I/O Adapter Module
- USA
- 87 mm * 94mm * 92mm
- 0.26kg
- Xiamen, China
- New & In Stock
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Technical Report: FLEX I/O Dual-Port EtherNet/IP Adapter 1794-AENTR
1. Product Overview
The 1794-AENTR is a FLEX I/O dual-port EtherNet/IP communication adapter module used in distributed industrial automation systems. It connects FLEX I/O terminal bases to an Ethernet/IP network and enables real-time data exchange between PLC controllers and remote I/O stations.
Compared with single-port adapters, this module provides two Ethernet ports, allowing linear or ring network topology (including DLR – Device Level Ring in compatible systems), which improves network resilience.
It supports up to 8 FLEX I/O modules per node, making it suitable for compact and scalable distributed I/O systems.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: Distributed I/O Ethernet Adapter
- Technology Field: Industrial Ethernet / EtherNet/IP Systems
- Manufacturing Origin: United States (varies by production batch)
3. Product Series
- Series Name: FLEX I/O Series
- System Architecture: Distributed modular I/O platform
- Network Type: EtherNet/IP industrial Ethernet
- Installation Type: DIN rail / panel-mounted system
The FLEX I/O family is designed for modular expansion in industrial automation systems requiring remote I/O control.
4. Product Introduction
The 1794-AENTR functions as an EtherNet/IP adapter node with dual Ethernet ports.
Key functions include:
- EtherNet/IP communication at 10/100 Mbps
- Two RJ45 Ethernet ports for daisy-chain or ring topology
- Support for up to 8 FLEX I/O modules
- Real-time cyclic I/O data exchange
- Network redundancy support (DLR-capable in compatible configurations)
- Flexible IP configuration (DHCP or manual addressing)
It is widely used in modern industrial networks requiring higher uptime and simplified cabling.
5. Technical Parameters
5.1 Communication Performance
| Parameter | Value |
|---|---|
| Communication Protocol | EtherNet/IP |
| Network Speed | 10/100 Mbps |
| Ethernet Ports | 2 × RJ45 |
| I/O Capacity | up to 8 FLEX I/O modules |
| Network Topology | Linear / Star / Ring (DLR capable) |
| Cable Type | Cat5 / Cat5e industrial Ethernet |
| Addressing | DHCP / Static IP |
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 | ~400–500 mA @ 24 V DC |
| Power Dissipation | ~6–7 W typical |
| Inrush Current | ~18 A (2 ms) |
| Isolation Voltage | 50 V continuous (basic insulation) |
5.3 System Capability
| Parameter | Value |
|---|---|
| System Capacity | up to 8 FLEX I/O modules |
| Node Type | EtherNet/IP adapter node |
| Configuration Tool | PLC programming software |
| Network Role | Remote I/O interface |
| Compatibility | FLEX I/O terminal base system |
5.4 Physical Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 87 mm |
| Width | 94 mm |
| Depth | 69–92 mm (varies by mounting reference) |
| Mounting Type | DIN rail / panel mount |
| Weight | 0.26 kg (approx.) |
| Form Factor | Dual-port Ethernet adapter module |
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 | IEC industrial standard (5G typical) |
| Shock Resistance | up to 30G |
6. Product Applications
The 1794-AENTR is widely used in Ethernet-based distributed automation systems requiring redundancy and flexible networking.
Typical application areas:
- Automotive production systems
- Packaging machinery lines
- Conveyor and logistics systems
- Industrial robotics I/O expansion
- Process control automation
- Machine cell distributed control
- Factory Ethernet backbone I/O systems
- High-availability production systems
Functional role:
- Ethernet/IP remote I/O communication node
- Distributed signal acquisition interface
- PLC-to-field device gateway
- Modular expansion controller for FLEX I/O systems
7. Product Advantages
7.1 Dual-Port Ethernet Design
Allows daisy-chain wiring and reduces switch dependency.
7.2 Improved Network Reliability
Supports ring or linear redundancy architectures (DLR-capable systems).
7.3 High Expansion Capability
Supports up to 8 FLEX I/O modules per node.
7.4 Simplified Wiring Structure
Reduces installation complexity in large-scale systems.
7.5 Real-Time Industrial Communication
Ensures deterministic I/O data exchange over EtherNet/IP.
7.6 Flexible Integration
Compatible with modern PLC architectures and Ethernet infrastructure.
8. Recommended Models (Same Series / Related Modules)
8.1 FLEX I/O Ethernet / Network Adapters
| Model | Description | Key Parameters |
|---|---|---|
| 1794-AENT | Single-port EtherNet/IP adapter | Standard Ethernet I/O |
| 1794-AENTRXT | Rugged XT Ethernet adapter | Extended temperature design |
| 1794-ACN | ControlNet adapter | 5 Mbps deterministic network |
| 1794-ACNR15 | Redundant ControlNet adapter | Dual-channel redundancy |
| 1794-ADN | DeviceNet adapter | CAN-based fieldbus |
9. Recommended Models (Same Brand – Popular Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1756-EN2T | Ethernet communication module | ControlLogix network module |
| 1756-IB16 | Digital input module | 16-channel 24V DC input |
| 1756-OB16E | Digital output module | Electronic switching output |
| 1769-L33ER | PLC controller | CompactLogix CPU with Ethernet |
| 1769-PA4 | Power supply module | High-capacity AC/DC power unit |
10. Summary
The 1794-AENTR is a dual-port EtherNet/IP FLEX I/O adapter designed for modern distributed industrial automation systems.
Its dual Ethernet interfaces, flexible topology support, and stable industrial performance make it a widely used solution for scalable and high-reliability I/O network architectures.