Configured for remote I/O data exchange in SLC 500 control systems, the Allen-Bradley 1747-SN (1747-SN SLC Remote I/O Scanner Module) provides direct physical and electrical communication execution between SLC processors and remote I/O chassis.

Model Identification & Revision Matrix

The 1747-SN is an SLC 500 Remote I/O Scanner Module designed to connect SLC processors with remote I/O racks. The module operates with SLC 5/02, SLC 5/03, SLC 5/04, and SLC 5/05 processors for distributed I/O communication.

Hardware Specifications

The 1747-SN module provides a dedicated interface between the SLC 500 processor and remote I/O devices. It scans remote I/O racks and transfers input and output data through the Remote I/O network architecture.

EtherNet/IP and Industrial Network Integration

The Allen-Bradley 1747-SN applies the SLC 500 remote communication architecture for distributed I/O expansion. The module performs remote rack scanning and maintains data exchange between the processor memory image table and connected I/O devices.

The scanner module supports I/O density scaling by allowing additional remote chassis installations without increasing the local processor slot count. Proper network configuration and addressing are required for deterministic remote I/O operation.

Ordering Information

The shipment configuration includes:

• 1 x Allen-Bradley 1747-SN SLC Remote I/O Scanner Module
• 1 x Factory module assembly
• 1 x Product identification label

Additional components required for a complete remote I/O system:

• SLC 500 processor module
• SLC chassis and power supply
• Remote I/O adapter modules
• Remote I/O field devices

Field Installation Guidelines

Chassis Installation

• Install the 1747-SN module into the designated SLC 500 chassis slot.
• Remove chassis power before inserting or removing the module.
• Confirm the module locking mechanism is fully secured.

Remote I/O Network Wiring

• Use appropriate Remote I/O communication cable according to system requirements.
• Keep communication wiring separated from high-voltage conductors.
• Verify network termination and addressing before startup.

System Configuration

• Confirm processor compatibility before commissioning.
• Verify remote rack addressing parameters.
• Check I/O mapping between the processor and remote devices.

Frequently Asked Questions

• What is the primary function of the 1747-SN module?

The 1747-SN operates as a Remote I/O Scanner Module that transfers input and output data between SLC processors and remote I/O chassis.

• Which processors support the 1747-SN?

The module supports SLC 5/02, SLC 5/03, SLC 5/04, and SLC 5/05 processor systems.

• Where is the 1747-SN installed?

The module is installed directly into an SLC 500 modular chassis slot and communicates through the system backplane.

• What voltage does the 1747-SN require?

The scanner module operates from the SLC chassis backplane 5 VDC supply.

• What is the current consumption of the module?

The specified backplane current consumption is 600 mA.

• Can the 1747-SN expand remote I/O capacity?

Yes. The module allows SLC systems to communicate with remote I/O racks for distributed control applications.

• Does the 1747-SN require a separate communication adapter?

The module functions as the scanner interface. Remote chassis require compatible remote I/O adapter hardware.

• Are different revisions available for the 1747-SN?

Yes. Known versions include 1747-SN/A and 1747-SN/B, with compatibility depending on system configuration.