Allen‑Bradley 1794-ACN15 – ControlNet FLEX I/O Adapter Module

Specifications

• Communication Protocol: ControlNet (5 Mbps deterministic CIP bus)
• Network Port: Single BNC connector for ControlNet coaxial cable
• Supported Local I/O Modules: Up to 8 pieces of 1794 series I/O modules on one terminal base assembly
• Backplane Current Draw: 600 mA @ 5 VDC
• Operating Power Supply: 24 VDC (19.2–31.2 VDC), max power consumption 10 W
• Network Connection: Matches 1786-RG6 ControlNet coaxial cable & 1786-TPS taps
• Status Indicators: Module OK, network link, communication fault LED indicators
• Compatible Controllers: ControlLogix PLCs equipped with 1756-CN2 / 1756-CN2R modules
• Operating Temperature: 0 °C to +60 °C
• Humidity: 5%–95% RH, non-condensing
• Mounting: DIN rail mounted via standard 1794 terminal base
• Dimensions: 134 × 40 × 87 mm
• Weight: Approx. 0.17 kg
• Certifications: UL/cULus, CE

Key Features

• Connects distributed FLEX I/O stations to ControlLogix controllers over ControlNet bus
• Real-time deterministic I/O data transmission for high-speed discrete and process signals
• Supports hot swapping of FLEX I/O modules without disconnecting field wiring
• Built-in network diagnostic LEDs for fast on-site fault troubleshooting
• Compact modular design saves cabinet space for decentralized field I/O installation
• Fully compatible with all 1794 digital input, output, analog and relay I/O modules
• Stable 75Ω impedance matching to avoid ControlNet signal reflection and communication errors

Applications

• Remote distributed I/O collection on ControlNet industrial control networks
• Automotive assembly, packaging machinery, material handling conveyor systems
• Process industry valve, sensor and actuator signal remote acquisition
• Factory automation systems requiring hard real-time ControlNet communication