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Allen-Bradley 1794-AENT Flex I/O EtherNet/IP Adapter

Product Description

The 1794-AENT is a Flex I/O EtherNet/IP communication adapter that enables Allen-Bradley Flex I/O modules to connect to EtherNet/IP networks, allowing integration with Logix controllers (ControlLogix, CompactLogix) and other PLC systems. It supports distributed I/O architectures, providing a compact and cost-effective solution for industrial automation applications .

Key Features

EtherNet/IP Connectivity
- Single RJ45 port (10/100 Mbps) for network communication.
- Supports linear topology (daisy-chaining) for simplified wiring .
Flexible I/O Expansion
- Supports up to 8 Flex I/O modules (discrete, analog, or specialty I/O) .
- Compatible with 1794-TB3G/TB3GS terminal bases .
Easy Configuration
- Node address set via thumbwheel switch (001–254) or DHCP .
- No network scheduling required for basic operation .
Robust Industrial Design
- IP20 open enclosure (requires protective cabinet for harsh environments) .
- DIN rail mounting (87 × 94 × 92 mm, 227 g) .
Diagnostics & Status Indicators
- LED indicators for module status (red/green), network status (red/green), and link activity (green) .

Technical Specifications

Parameter	Value
Model	1794-AENT
Input Voltage	19.2–31.2V DC (24V nominal)
Max FlexBus Current	640 mA
Power Consumption	7.3W @ 19.2V DC
Communication Speed	10/100 Mbps
Operating Temperature	0°C to +60°C
Isolation Voltage	50V continuous
Dimensions (W×H×D)	87 × 94 × 92 mm
Weight	227 g

Applications

Remote I/O for PLC systems (ControlLogix, CompactLogix) .
Factory automation (conveyors, packaging machines) .
Process control (pump stations, HVAC systems) .
Material handling (distributed control in large facilities) .

Installation & Usage Notes

Wiring
- Use shielded twisted-pair cables (Cat 5e or better) for Ethernet connections .
- Power supply must comply with PELV/SELV standards (CE LVD) .
Grounding
- DIN rail must be grounded (use galvanized yellow-chromate steel for corrosion resistance) .
Maintenance
- Regularly check terminal tightness (recommended torque: 0.8 Nm) .
- Avoid hot-swapping while powered .