Order now: Allen-Bradley 1769-SDN DeviceNet Scanner Module
Atlantechdrives provides you the 1769-SDN, a high-performance communication bridge that enables CompactLogix and MicroLogix 1500 controllers to act as masters on a DeviceNet network. This module is essential for integrating legacy and specialized DeviceNet-compatible devices like motor starters, push-button stations, and valve manifolds into a Logix-based architecture.
- Network: DeviceNet (125, 250, 500 Kbps)
- Node Capacity: Up to 63 DeviceNet nodes
- I/O Capacity: 361 words of Input / 360 words of Output
- Connection: 5-pin open style connector
- Backplane Current: 440 mA @ 5.1V
- Software: RSNetWorx for DeviceNet
Technical Performance: Reliable Mastership over DeviceNet
Procure now the 1769-SDN to bridge the gap between your controller and distributed field devices. This scanner module is engineered to manage the scheduling and data exchange of up to 63 nodes on a single DeviceNet trunk. It supports both polled and change-of-state (COS) messaging, providing high-speed deterministic data transfer. The 1769-SDN offloads the communication processing from the CPU, handling the low-level DeviceNet protocol stack independently. This ensures that the PLC logic execution remains consistent regardless of network traffic. When you secure the 1769-SDN, you are acquiring a robust communication engine capable of complex diagnostic reporting, allowing for real-time monitoring of every node on the network through the controller’s data table.
Installation Advice: Addressing and Network Termination
Installing the 1769-SDN requires precise network configuration. You must set the Node Address (MAC ID) and Baud Rate using RSNetWorx for DeviceNet or the module’s hardware switches (if available). A mandatory technical requirement for DeviceNet is the 121-ohm termination resistor at both ends of the trunk line. Without proper termination, the 1769-SDN will experience high «Error Counters,» leading to intermittent node dropouts. Furthermore, ensure the 24V DC network power is stable and meets the current demands of the connected nodes. Sourcing your 1769-SDN from Atlantechdrives ensures you receive a unit with healthy communication transceivers, essential for long-distance DeviceNet runs.
Maintenance and Signal Diagnostics
The 1769-SDN features a 2-digit numeric display on the front panel that provides immediate diagnostic codes (e.g., Error 72 for node failure). Maintenance teams can use these codes for rapid troubleshooting without a PC. Periodically inspect the 5-pin terminal for oxidation. Sourcing an authentic 1769-SDN from Atlantechdrives guarantees the hardware quality and protocol compliance required for stable DeviceNet operations.
FAQs
Q: Does the 1769-SDN support DeviceNet Safety?
A: No, the 1769-SDN is for standard DeviceNet I/O. DeviceNet Safety requires specific GuardLogix-compatible hardware.
Q: How many DeviceNet scanners can I put on one CompactLogix?
A: This depends on the CPU node limit and power budget, but multiple 1769-SDN modules are typically supported.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
This DeviceNet scanner allows for seamless communication between legacy networks and modern Ethernet-based drops using a 1769-AENTR adapter.
