OVERVIEW

Official designation: Allen-Bradley 1747-SDN (SLC 500, DeviceNet Scanner Module)

The 1747-SDN is a single-slot SLC 500 module that functions as a DeviceNet Scanner, enabling the SLC processor to exchange I/O data with DeviceNet field devices.

KEY SPECS SUMMARY

Power: 5V DC, 500 mA (backplane)

Interfaces / Ports: One 5-pin DeviceNet port

Indicators: Network status (NS), Module status (MS)

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 5/02, 5/03, 5/04, 5/05

Limit: 500 Kbps max baud rate

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the three primary network data rates supported by the 1747-SDN module?

A: The module supports DeviceNet data rates of 125, 250, and 500 Kbps.

Wiring & Installation:

Q: Which type of connector is used for the DeviceNet communication port on the module?

A: The DeviceNet network uses a 5-pin screw terminal block for connection.

Troubleshooting & Compatibility:

Q: What does a red flashing Network Status (NS) LED typically indicate on the 1747-SDN?

A: A flashing red NS LED indicates a failure in DeviceNet communications with one or more nodes.

Replacement & Upgrades:

Q: What modern Allen-Bradley module is the most common replacement for the 1747-SDN for DeviceNet connectivity?

A: The 1756-DNB ControlLogix DeviceNet Scanner module is a common replacement.