1769-SDN Allen-Bradley DeviceNet Scanner Module

Allen-Bradley 1769-SDN Compact I/O DeviceNet Communication Modules

Allen-Bradley 1769-SDN Compact I/O DeviceNet Communication Modules

Availability: 99 left in stock

Allen-Bradley 1769-SDN Compact I/O DeviceNet Scanner Module The Allen-Bradley 1769-SDN, also cataloged as the 1769-SDN DeviceNet Scanner Module, operates as...

SKU: 1769-SDN

Manufacturer: Allen Bradley
Product No.: 1769-SDN
Product Type: Communication Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 280g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Allen-Bradley 1769-SDN Compact I/O DeviceNet Scanner Module

The Allen-Bradley 1769-SDN, also cataloged as the 1769-SDN DeviceNet Scanner Module, operates as a dedicated hardware component for high-speed industrial network routing and field slave management within CompactLogix and MicroLogix 1500 controller architectures. It provides direct physical execution of cyclic I/O data transfers and explicit messaging across up to 64 DeviceNet field nodes over a single trunkline trunk architecture.

Hardware Specifications

Parameter	Specification
Model	1769-SDN
Brand	Allen-Bradley / Rockwell Automation
Origin	USA
Weight	0.28 kg
Dimensions	118 mm x 35 mm x 87 mm
Operating Temp	0 to +60 deg C
Power Consumption	440 mA at 5 VDC backplane / 100 mA at 24 VDC network power
Series	Series B
Communication Protocol	DeviceNet
Node Capacity	Up to 64 Slave Nodes
Baud Rates	125 kbps, 250 kbps, 500 kbps
Connection Type	5-Pin Phoenix Open-Style Connector
Enclosure Type	Open Style DIN Rail / Panel Mount
Certifications	UL, CE, cULus, Class I Div 2

Backplane Bus Communication & Network Determinism

The module executes backplane bus communication velocity routines to transfer mapped field device image tables directly into the local CompactLogix CPU memory map. By configuring deterministic EtherNet/IP to DeviceNet routing bridges, the unit coordinates node scanning while maintaining full firmware flash compatibility across legacy and current Rockwell hardware platforms. Internal Auto-Device Replacement (ADR) logic automatically pushes configuration parameters and node addresses directly over the bus to newly replaced field instruments, suppressing network downtime and eliminating manual software re-downloads.

Frequently Asked Questions

Q: Does the 1769-SDN module require an isolated external 24 VDC power connection to operate on the network?

A: Yes. The 1769-SDN draws logic operational power from the 1769 backplane bus (440 mA at 5 VDC), but its integrated DeviceNet transceiver requires a dedicated 24 VDC bus power supply connected to the 5-pin Phoenix network cable assembly.

Q: How is the node address (MAC ID) and scan list stored on the 1769-SDN module?

A: The scanner node address, baud rate settings, and slave device scan list are configured using RSNetWorx for DeviceNet and stored directly in non-volatile flash memory inside the 1769-SDN module.

Q: Is hot-swapping supported for the 1769-SDN module on an active CompactLogix backplane?

A: No. The 1769 Compact I/O hardware architecture does not support Removal and Insertion Under Power (RIUP). Backplane power must be fully isolated before removing or inserting the module.

Field Installation Guidelines

Mount the module on a grounded 35 mm DIN rail or panel subplate, ensuring adjacent 1769 modules lock securely via side-locking interlocks. Land the 5-pin open-style Phoenix connector onto the primary DeviceNet trunkline using trunk/drop media standard colors: Red (V+), White (CAN High), Bare (Shield), Blue (CAN Low), and Black (V-). Connect terminating resistors (121 ohm, 1/4 W, 1% metal film) across the CAN High and CAN Low lines at both physical ends of the trunk line. Ensure the DeviceNet cable shield connects to earth ground at exactly one point along the network trunkline to avoid creating ground loops. Maintain a minimum separation distance of 200 mm between the DeviceNet cable run and high-voltage AC cables, motor control wiring, or Variable Frequency Drive (VFD) output cables. Tighten all screw terminal connections to specified torque limits, ensuring at least 5 full thread engagements.

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