Allen-Bradley 1771-ASB PLC-5 Remote I/O Adapter Module

Overview

The Allen-Bradley 1771-ASB is a PLC-5 series remote I/O adapter module designed to link distributed I/O chassis with programmable controllers across industrial networks. It enables high-reliability communication between remote racks and central PLC systems, supporting scalable automation architectures.

This module acts as a communication bridge for remote I/O configurations, allowing multiple input and output modules to be managed from a central control system over extended distances.

Key Features

• Remote I/O communication interface for PLC-5 systems

• Supports long-distance control network integration

• Flexible addressing modes: 1-slot, 1/2-slot, and 2-slot configurations

• Integrated field wiring arm for simplified installation

• Configuration jumpers included for setup flexibility

• Built-in diagnostic indicators for system monitoring

• Supports up to 32 I/O points in mixed configurations

• Designed for leftmost slot installation in I/O chassis

• Suitable for distributed control and remote rack architectures

Technical Specifications

System Functionality

The 1771-ASB module provides deterministic remote communication between PLC processors and distributed I/O racks. It supports stable data exchange across long cable distances, ensuring consistent system synchronization in large-scale installations.

Its flexible addressing structure allows engineers to optimize I/O density based on application requirements.

Typical Applications

• Distributed I/O control systems

• Large-scale manufacturing automation

• Remote process monitoring systems

• Material handling networks

• Oil and gas facility control systems

• Multi-rack PLC-5 architectures

• Infrastructure and utility automation

FAQ

What is the primary function of the 1771-ASB module?

It serves as a communication adapter between PLC-5 controllers and remote I/O racks.

What is the maximum communication distance supported?

The module supports communication distances up to 10,000 cable feet.

Does it support multiple I/O addressing formats?

Yes. It supports 1-slot, 1/2-slot, and 2-slot addressing methods.

Where is the module installed in the chassis?

It must be installed in the leftmost slot of the I/O chassis.

Is configuration hardware included?

Yes. The unit includes both configuration jumpers and a field wiring arm.