The Allen-Bradley 1747-SDN, also cataloged as the 1747-SDN DeviceNet Scanner Module, operates as a dedicated hardware component for DeviceNet network scanning and I/O data exchange within SLC 500 controller platforms.

Module Identification

The 1747-SDN is a single-slot SLC 500 communication module designed to provide one DeviceNet communication port for SLC processors. It supports SLC 5/02 or later controllers and enables DeviceNet node management, pass-through communication, and cyclic I/O data transfer.

Hardware Specifications

DeviceNet Network Communication

The 1747-SDN provides DeviceNet scanner functionality through the SLC 500 backplane interface. The module manages communication between the SLC processor and DeviceNet field devices by exchanging input and output data through configured scan lists.

The module supports EtherNet/IP or ControlNet network integration through pass-through communication paths when used with compatible SLC communication configurations. DeviceNet network wiring should maintain proper signal reference and shield termination practices according to installation requirements.

The Allen-Bradley SLC platform uses deterministic controller communication paths, where module data exchange timing depends on backplane scan execution, DeviceNet baud configuration, and connected node response characteristics.

Ordering Information

• 1 x Allen-Bradley 1747-SDN DeviceNet Scanner Module
• 1 x SLC 500 single-slot module hardware assembly
• 1 x Standard product packaging

Field Installation Guidelines

Rack Installation

• Install the module into an available single slot position of an SLC 500 chassis.
• Verify controller compatibility before applying power.
• Confirm proper seating between the module connector and chassis backplane.

DeviceNet Wiring

• Use DeviceNet-rated cable and maintain correct network polarity.
• Separate communication wiring from high-voltage power conductors.
• Connect cable shielding according to the DeviceNet installation standard.

Configuration

• Configure scan list parameters according to connected DeviceNet nodes.
• Verify node addressing before placing the controller into run mode.
• Check backplane current capacity when adding multiple modules to the chassis.

Frequently Asked Questions

• What controller versions are compatible with the 1747-SDN?

The module is compatible with SLC 5/02 processors and later SLC 500 controllers supporting DeviceNet scanner operation.

• How many communication ports are available on the module?

The 1747-SDN contains one DeviceNet communication port for connection to DeviceNet field devices.

• What is the module power requirement from the backplane?

The module requires 500 mA from the 5 VDC backplane supply and 90 mA from the 24 VDC backplane supply.

• Does the module support DeviceNet pass-through communication?

Yes. The 1747-SDN supports pass-through communication functions for compatible SLC communication configurations.

• Can the 1747-SDN be installed in any SLC 500 slot?

The module occupies one standard SLC 500 chassis slot and requires a compatible processor and available backplane position.

• What DeviceNet communication speed is supported?

The module specification includes DeviceNet communication operation at 125 Kbps data transfer speed.

• Does the module support hot swapping during operation?

The module should not be removed or installed while the chassis is energized unless the system configuration specifically supports this procedure.

• What installation factors affect DeviceNet communication performance?

Network cable quality, node configuration, grounding, shielding, and DeviceNet topology influence communication behavior.