1794-ASB

Product Overview

1794-ASB is an Allen-Bradley FLEX I/O Remote I/O Adapter Module from Rockwell Automation designed to connect FLEX I/O distributed modules to Remote I/O networks. This adapter provides communication between FLEX I/O racks and Allen-Bradley PLC controllers through Remote I/O (RIO) protocol, supporting up to 8 FLEX I/O modules with 24V DC power input. With DIN rail mounting, diagnostic LED indicators and selectable communication speeds, it is widely used in industrial automation, machine control, process systems and legacy PLC remote I/O applications. 

Key Features

• Manufacturer: Rockwell Automation / Allen-Bradley

• Part Number: 1794-ASB

• Product Family: FLEX I/O Bulletin 1794 Series

• Product Type: Remote I/O Communication Adapter Module

• Communication Protocol: Allen-Bradley Remote I/O (RIO)

• Communication Interface: Remote I/O scanner connection

• Communication Speed: 57.6 kbps, 115.2 kbps and 230.4 kbps

• FLEX I/O Capacity: Supports up to 8 FLEX I/O modules

• Power Supply Voltage: 24V DC nominal

• Operating Voltage Range: 19.2V to 31.2V DC

• Current Consumption: Approximately 450mA maximum at 24V DC

• FlexBus Output Current: Up to 640mA

• Power Dissipation: Approximately 4.6W maximum

• Isolation Voltage: 500VAC between user power and FlexBus

• Communication Cable: Remote I/O compatible cable system

• Status Indicators: Adapter active, adapter fault and local fault LEDs

• Mounting Type: DIN rail mounting

• Connection Type: Removable terminal base connection

• Enclosure Type: Open-style industrial module

• Operating Temperature Range: -20°C to +55°C

• Storage Temperature Range: -40°C to +85°C

• Dimensions: Approximately 69mm × 68mm × 87mm

• Features: Distributed I/O communication, modular FLEX I/O expansion and legacy PLC network compatibility

• Typical Applications: Remote I/O systems, factory automation, machine control, process automation and industrial control panels

• Compatibility: PLC-5, SLC 500 and other Remote I/O enabled Allen-Bradley controller systems

• Lifecycle Note: 1794-ASB is a legacy FLEX I/O communication adapter. Buyers should verify system compatibility and replacement requirements before installation.

• Ordering Note: Buyers should confirm Remote I/O scanner configuration, firmware version and FLEX I/O terminal base compatibility before use.

Applications

1794-ASB is designed for distributed control systems requiring remote FLEX I/O communication over Allen-Bradley Remote I/O networks. Typical applications include manufacturing production lines, packaging equipment, conveyor systems, process control installations, material handling systems, OEM machinery and maintenance projects for existing PLC-5 or SLC-based automation systems. 

Quality & Sourcing

Antrex Electronics can support 1794-ASB sourcing with stock availability checks, RFQ quotation, product condition verification, label inspection and shipment arrangement. For project-based purchasing, buyers can provide quantity, target price, required delivery date, packaging requirements and application information for faster quotation support.

For quality control, Antrex Electronics can help arrange product photos, visual inspection and functional testing support when required. OEMs, system integrators, industrial automation companies, repair centers and electronic component buyers are welcome to submit BOM lists or hard-to-find PLC communication component requirements for sourcing assistance.