1771-ASB/E Allen-Bradley Series Datasheet & Technical Manual

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Allen-Bradley 1771-ASB/E Remote I/O Adapter Module The Allen-Bradley 1771-ASB/E, also cataloged as the 1771-ASB Remote I/O Adapter Module, operates as...

SKU: 1771-ASB/E

Manufacturer: Allen Bradley
Product No.: 1771-ASB/E
Product Type: PLC Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 900g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

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

The Allen-Bradley 1771-ASB/E, also cataloged as the 1771-ASB Remote I/O Adapter Module, operates as a dedicated hardware component for distributed network communication management within PLC-5 platforms.

Hardware Specifications

Parameter	Specification
Model	1771-ASB/E
Brand	Allen-Bradley
Origin	USA
Weight	Standard 1771 slot weight ( 0.90 kg)
Dimensions	Standard 1771 single-slot module footprint
Operating Temp	0 to 60 deg C
Power Consumption	Backplane current: .2 A @ 5 VDC
Communication Protocol	Universal Remote I/O (RIO)
Baud Rate Options	57.6 kbaud, 115.2 kbaud, 230.4 kbaud
Relative Humidity	Up to 95% non-condensing
Hazardous Location Rating	Class I, Division 2, Groups A, B, C, D
Diagnostics	Front-panel status LEDs (Active, Fault, Communication)
System Compatibility	PLC-5 controllers and 1771 I/O chassis
Certifications	UL, CSA, CE compliant

Industrial Control & Drive Integration

The 1771-ASB/E coordinates discrete and block transfer data sequencing synchronized with the backplane bus communication velocity properties of the legacy 1771 chassis. By serving as an intermediate slave controller, the hardware executes comprehensive I/O density scaling routines across remote segments linked to higher-level Profinet / EtherNet/IP deterministic networks via network scanners. Maintaining specific firmware flash compatibility across the primary PLC-5 processor, host adapters, and the modular chassis infrastructure is necessary to verify exact input/output image mapping and prevent token-rotation transmission timeouts.

Frequently Asked Questions

Q: Does the 1771-ASB/E module support hot-swapping or card extraction while the chassis is powered?

A: No. The 1771 I/O chassis backplane design does not support Removal and Insertion Under Power (RIUP). The primary rack power supply must be completely de-energized before inserting or removing this communication adapter to prevent logic architecture damage or signal line corruption.

Q: How is the physical network speed configured on this remote adapter?

A: The communication baud rate (57.6, 115.2, or 230.4 kbaud) is configured via onboard hardware dual inline package (DIP) switch arrays located on the module housing. These switches must match the scanning master configuration to establish a synchronous data link.

Field Installation Guidelines

Chassis Slot Insertion: Power down the 1771 assembly. Install the module into the leftmost slot (Slot 0) of the remote 1771 I/O chassis. Push the module firmly into the backplane connectors and clip the plastic chassis latches over the front edge to lock the unit.
Network Wiring Layout: Connect the RIO twinaxial cable to the front-facing terminal connector block according to standard terminal designations (Terminal 1 to blue wire, Terminal 2 to shield drain, Terminal 3 to clear wire). Wiring inside explosive areas must conform to NEC Article 501-4(b).
Line Termination Requirements: Install a physical termination resistor across the physical transmission lines at the final physical node of the RIO trunk link. Use a 150 Ohm or 82 Ohm resistor matched strictly to the specific baud rate and line length constraints of the implementation layout.

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