Allen-Bradley 1771-ASB | Remote I/O Adapter Module

Product code: N/A

Allen-Bradley 1771-ASB | Remote I/O Adapter Module

Original price was: ¥99,999.00.Current price is: ¥33,554.00.

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🛠After-sales service: brand new with one year warranty

⚙️ Product Category: Module/Controller/Server/Motor/Touch Screen

🕰Warranty: 12 months/365 days

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Detailed content

🔹 Product Description

The Allen-Bradley 1771-ASB is a Remote I/O Adapter Module for the 1771 I/O system. It provides the interface between I/O modules installed in a remote 1771 chassis and a PLC processor through the Allen-Bradley Universal Remote I/O link. The module communicates serially with the remote I/O scanner while transferring I/O data between the RIO network and the 1771 chassis backplane. The 1771-ASB/B is a Series B version within the 1771-ASB family and supports the addressing and communication capabilities defined for its specific series. The module installs in the leftmost position of a compatible 1771 I/O chassis.

🔹 Product Datasheet

Parameter	Specification
Brand	Allen-Bradley / Rockwell Automation
Model	1771-ASB
Series	1771 I/O
Product Name	Remote I/O Adapter Module
Version	1771-ASB/B, Series B
Communication	Universal Remote I/O, Serial
Module Location	Leftmost slot of compatible 1771 I/O chassis
Backplane Current	1.0 A @ 5 VDC
Product Status	Legacy / Discontinued
Weight	Approx. 0.9 kg (1.9 lb)
Discontinued	Yes – December 31, 2017

🔹 Key Features

• Interfaces remote 1771 I/O modules with a PLC processor through the Universal Remote I/O link
• Serial RIO communication at rates dependent on the adapter series and system configuration
• Supports 1771 I/O chassis applications with compatible addressing modes
• Provides data transfer between the remote I/O scanner and chassis backplane
• Designed for use with 1771 I/O modules and compatible chassis
• Uses the 1771-WB field wiring arm
• Series B configuration should be matched carefully with the existing chassis and scanner
• Suitable for maintenance and replacement of legacy Allen-Bradley remote I/O systems

🔹 Frequently Asked Questions

Q1: What is the Allen-Bradley 1771-ASB?
A: It is a Remote I/O Adapter Module that connects a 1771 remote I/O chassis to a PLC processor through the Universal Remote I/O network.

Q2: What is 1771-ASB/B?
A: The “/B” identifies the Series B version of the 1771-ASB adapter family. Revision/series compatibility should be checked before replacement.

Q3: Where is the module installed?
A: The 1771-ASB is installed in the leftmost slot of a compatible 1771 I/O chassis.

Q4: What communication network does it use?
A: It uses Allen-Bradley Universal Remote I/O, with serial communication between the adapter and the remote I/O scanner.

Q5: What addressing modes are supported?
A: The supported addressing modes depend on the specific 1771-ASB series and chassis combination. Series B and later versions support 2-slot, 1-slot, and 1/2-slot addressing under applicable configurations.

Q6: What is the backplane current requirement?
A: The published specification is approximately 1.0 A at 5 VDC.

Q7: Is the 1771-ASB still manufactured?
A: Rockwell Automation lists the 1771 Remote I/O Adapter Module as Discontinued, with a discontinuation date of December 31, 2017.

Q8: What should be checked before replacement?
A: Verify the exact series, catalog number, chassis type, addressing mode, scanner compatibility, termination, switch settings, field wiring arm, and existing RIO configuration before installation.

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