Allen Bradley 1747-SN Remote I/O Scanner Module

Core Performance & Industrial Application

The Allen Bradley 1747-SN is a remote I/O scanner module designed for the SLC 500 PLC series.

It acts as the master on the Remote I/O network and exchanges digital and analog data with remote adapter modules such as 1794-ASB and 1747-ASB.

It uses DIP switches for rack size and network configuration, with LED indicators for communication and fault diagnosis.

It supports multiple remote racks, expanding the I/O layout and enabling distributed field signal collection.

It is a single-width module that plugs directly into the SLC 500 backplane and draws power from the chassis.

It is widely used in legacy production lines, water treatment, material handling and packaging automation systems.

Technical Specifications

▶ Product type: Remote I/O scanner module, order no. 1747-SN

▶ Brand: Allen Bradley (Rockwell Automation)

▶ Series: SLC 500

▶ Network: Remote I/O (RIO)

▶ Compatible adapters: 1794-ASB, 1747-ASB

▶ Backplane current: 800mA @ 5V DC

▶ Mounting: SLC 500 chassis single slot

▶ Diagnosis: LED status indicators

▶ Operating temperature: 0℃ ~ +60℃

▶ Protection rating: IP20 (cabinet mounting)

▶ Feature: Distributed I/O expansion, simple DIP switch setting

▶ Country of origin: USA

▶ Compliance: CE, UL certification

Industry Applications

Applied in water treatment plants, conveyor systems, packaging machinery and old factory automation lines for remote I/O network maintenance and replacement.

Note: Confirm SLC CPU firmware and matching remote adapter model before ordering