1794-ASB SERIES E

Overview of Allen-Bradley 1794-ASB Series E Flex I/O Remote I/O Adapter

The Allen-Bradley 1794-ASB Series E is a Flex I/O communication adapter used to connect Flex I/O racks to Remote I/O capable controllers. It supports up to eight Flex I/O modules and communicates via the Remote I/O (RIO) protocol with variable speeds (57.6 Kbps, 115.2 Kbps, and 230.4 Kbps). This DIN rail-mounted device requires a 24V DC power supply and features diagnostic indicators for power, adapter status, and fault conditions.

Key Features of Allen-Bradley 1794-ASB Series E

• Communication Port: One Remote I/O (RIO) port supporting daisy chain topology.
• Power Supply: Nominal 24V DC, consumption 330 mA at 24V DC.
• Supports: Up to eight Flex I/O modules per adapter.
• Data Transfer Speeds: 57.6, 115.2, and 230.4 Kbps.
• Diagnostic Indicators: Power, Adapter Active, Adapter Fault, and Local Fault LEDs for troubleshooting.
• Mounting: DIN rail.
• Enclosure: IP20, open type requiring installation in a suitable enclosure.
• Environmental Ratings: Operating temperature 0 to 55°C (32 to 131°F), storage -40 to 85°C (-40 to 185°F).

Technical Specs of 1794-ASB Series E

Applications / Use Case of Allen-Bradley 1794-ASB Series E

This remote I/O adapter is ideal for distributed I/O architectures in industrial automation environments, such as manufacturing and process control systems. It provides reliable communication between Flex I/O modules and controllers, supporting scalable and modular automation setups.