Allen-Bradley 1794-ASB Flex I/O Remote Adapter Module

Product Description

The Allen-Bradley 1794-ASB is a high-performance remote I/O adapter module belonging to the Flex I/O product family, designed to establish reliable communication between Rockwell Automation's PLCs (ControlLogix, CompactLogix, SLC 500) and distributed Flex I/O modules in industrial automation systems. Engineered for rugged factory floor and harsh industrial environments, this module features robust galvanic isolation, advanced electromagnetic interference (EMI) resistance, and a durable IP20-rated enclosure that withstands wide temperature fluctuations, vibration, and humidity. Its compact DIN rail-mount design optimizes control cabinet space, while plug-and-play connectivity with Flex I/O modules simplifies installation, commissioning, and system expansion. The 1794-ASB supports the DeviceNet industrial network protocol for deterministic data exchange, making it an essential component for distributed I/O applications in discrete manufacturing, process control, and material handling systems.

Key Functions

The core function of the 1794-ASB module is to act as a communication bridge between a central PLC and up to 16 Flex I/O modules (digital/analog input/output, specialty modules) in a remote I/O rack, enabling bidirectional data transmission of field device signals and PLC control commands over DeviceNet. It supports DeviceNet's producer/consumer communication model, allowing efficient data sharing with low latency (≤5 ms) and high data integrity for real-time control applications. The module features built-in diagnostic capabilities for monitoring I/O module status, DeviceNet network health, and power supply conditions, with visual LED indicators for quick fault identification and alarm reporting to the central PLC for proactive maintenance. It supports hot-swap replacement of connected Flex I/O modules to minimize system downtime during maintenance, and offers configurable DeviceNet parameters (baud rate: 125/250/500 kbps, node address) to adapt to diverse network requirements. Additionally, it provides overvoltage and short-circuit protection for the I/O backplane, ensuring reliable operation in harsh electrical environments.

Application Scenarios

The Allen-Bradley 1794-ASB Flex I/O adapter is widely deployed in distributed industrial automation applications across multiple sectors. In automotive manufacturing plants, it connects remote Flex I/O racks controlling robotic welding cells, paint shop actuators, and assembly line sensors to central ControlLogix PLCs over DeviceNet, enabling decentralized I/O management and reducing wiring costs. In food & beverage processing facilities, it links remote I/O modules monitoring filling machine sensors, conveyor systems, and temperature control loops to CompactLogix PLCs, complying with hygienic design requirements for washdown environments. For material handling and logistics operations, it integrates Flex I/O modules in automated conveyor systems, palletizing robots, and warehouse AS/RS (Automated Storage and Retrieval Systems) with central SLC 500/ControlLogix PLCs. The module is also ideal for water and wastewater treatment plants, connecting remote I/O racks at pump stations and filtration systems to central control PLCs over DeviceNet. Additionally, it is used in packaging machinery for distributed I/O control of sealing, labeling, and sorting systems, in HVAC systems for remote monitoring of air handling units, and in pharmaceutical manufacturing for decentralized control of batch process I/O in clean room environments.

Technical Specifications

Contact Information

• Sales Manager: KI MI
• WeChat: 18059884790
• WHATSAPP: +86 18059884790 (Click to add)
• Email: plc66@qq.com

Core Advantages

• 121 shared inventories worldwide, with direct procurement from overseas warehouses.
• Provide favorable prices and professional after-sales warranty services.
• All products are brand new and original; spare parts come with a one-year warranty and have been tested and certified.
• For orders of more than one product, contact us to get an exclusive discount.
• If other suppliers offer lower prices for the same products, we are willing to provide further discounts based on your budget.

Customer Distribution

Our customers are from: United States, Germany, Japan, South Korea, United Kingdom, France, Italy, Canada, Brazil, India, Australia, Russia, Spain, Netherlands, Switzerland, Sweden, Belgium, Austria, and Turkey.

Note

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