OVERVIEW

Official designation: Allen-Bradley 1747-ASB (SLC 500, RIO Adapter Module)

The 1747-ASB is an SLC 500 module that serves as a Universal Remote I/O (RIO) Adapter, enabling an SLC controller to manage remote SLC 500 I/O racks and modules.

KEY SPECS SUMMARY

Power: 5V DC, 750 mA (backplane)

Interfaces / Ports: One 3-pin RIO port

Indicators: Three status LEDs (COMM, FAULT, RIO)

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 processors

Limit: 57.6, 115, or 230 Kbps

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the three selectable data communication rates supported by the 1747-ASB module?

A: The module supports selectable RIO data rates of 57.6, 115, and 230 Kbps.

Wiring & Installation:

Q: What type of cable and connector is required for the Universal Remote I/O connection?

A: A standard RIO cable is required, connecting via a 3-pin Phoenix-style pluggable connector.

Troubleshooting & Compatibility:

Q: What does a flashing red FAULT LED on the RIO Adapter typically indicate?

A: A flashing red FAULT LED usually indicates a non-recoverable major fault within the module or the RIO network.

Replacement & Upgrades:

Q: What is the current recommended migration path for replacing the legacy RIO network?

A: Migration to EtherNet/IP is generally recommended, often utilizing ControlLogix or CompactLogix platforms.