Overview
The Allen-Bradley 1794-AENTRXT is a communication adapter module from the FLEX I/O 1794 series that enables FLEX I/O modules to interface with an I/O scanner port across an Ethernet/IP network. This dual-port adapter provides redundant Ethernet/IP connectivity for distributed I/O control systems. The module contains a built-in power supply that converts 24V DC to 5V DC, eliminating the need for separate power conditioning. Conformally coated for harsh industrial environments and approved for North American hazardous locations, this adapter supports single or redundant media configurations without requiring network scheduling or routing tables.
Key Features
- Dual-port Ethernet/IP with redundant media support for network fault tolerance
- Supports up to 8 FLEX I/O modules in a single rack configuration
- Extended temperature operation (-20°C to +70°C / -4°F to +158°F) for industrial environments
- Built-in power supply converts 24V DC input to 5V DC for internal I/O logic
- DIN rail mounting with open-style enclosure and IP20 rating
- No network scheduling or routing tables required for configuration and deployment
Technical Specifications
- Part Number: 1794-AENTRXT
- Product Family: FLEX I/O XT Communication Adapters
- Communication Protocol: Ethernet/IP 10/100 Mbps
- Port Configuration: Dual port (redundant media capable)
- I/O Module Capacity: 8 modules maximum
- Input Voltage Range: 19.2 to 31.2 VDC (nominal 24 VDC)
- Current Draw: Typical 400 mA, peak 500 mA at 24 VDC
- Power Consumption: 6.1 watts
- Operating Temperature: -20°C to +70°C (-4°F to +158°F)
- Dimensions: 87.4 × 94 × 92 mm (3.4 × 3.7 × 2.7 in)
- Weight: Approximately 227 grams (0.51 lbs)
- Mounting: DIN rail, open-style enclosure
- Protection Rating: IP20
- Conformal Coating: ISA/ANSI-71.040 1985 compliant
- Terminal Torque: 0.8 N-m (recommended)
Typical Applications
The 1794-AENTRXT is widely used in distributed control systems where FLEX I/O modules require connection to CompactLogix, ControlLogix, and other Ethernet/IP-enabled controllers. Common applications include:
- Manufacturing equipment with remote I/O across Ethernet/IP networks
- Machine control systems requiring redundant network connectivity
- Process automation in harsh or extended temperature environments
- Integration of FLEX I/O modules into existing Rockwell Automation infrastructures
- Modular production lines with decentralized I/O architecture
Compatibility & Replacements
Compatible With
- CompactLogix and ControlLogix controllers with Ethernet/IP ports
- Allen-Bradley FLEX I/O 1794 series modules (digital, analog, HART analog, specialty I/O)
- Rockwell Automation EtherNet/IP network infrastructure
- RSLogix 5000 and Studio 5000 Logix Designer programming environments
- Third-party Ethernet/IP networks and Encompass partner devices
Replaces / Drop-In Replacement For
The 1794-AENTRXT is the XT (extended temperature) variant of the FLEX I/O Ethernet/IP adapter family. It directly replaces the standard temperature 1794-AENT/B when extended temperature capability is required. Verify your application’s environmental requirements before substitution. For drop-in replacement confirmation, consult your system integrator or contact Rockwell Automation technical support.
Works With
- RSLogix 5000 / Studio 5000 Logix Designer programming software
- EtherNet/IP protocol (single or redundant media configurations)
- Rockwell Automation FLEX I/O I/O scanner ports
- Industrial Ethernet network architectures with 10/100 Mbps switches and infrastructure
- Redundant network topologies for high-availability control systems
