The Allen Bradley 1769-SDN is a CompactLogix DeviceNet scanner communication module designed to enable data exchange between CompactLogix controllers and DeviceNet field devices. It functions as a master scanner on the DeviceNet network, managing communication with multiple connected slave devices such as drives, sensors, and remote I/O blocks.
This module is widely used in legacy and hybrid industrial automation systems where DeviceNet networks are still deployed for machine-level communication.
Technical Specifications (Electrical & Mechanical)
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Catalog Number | 1769-SDN |
| Module Type | DeviceNet Scanner / Communication Module |
| Network Protocol | DeviceNet |
| Max Number of Nodes | Up to 64 nodes |
| Communication Rates | 125 kbps / 250 kbps / 500 kbps |
| Backplane Current Draw | ~440 mA at 5V DC |
| Power Dissipation | ~4.7 W |
| Communication Port | 1 × DeviceNet (5-pin open-style connector) |
| Isolation Voltage | ~30V continuous (DeviceNet to backplane) |
| Mounting Type | DIN rail / panel mount |
| Slot Width | 1 slot |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Dimensions | 118 × 50 × 87 mm |
| Weight | ~0.28 kg |
System Role and Function
The 1769-SDN acts as a DeviceNet network master (scanner) within a CompactLogix system. It continuously polls connected devices and transfers process data between the network and the PLC backplane.
Typical system roles include:
- DeviceNet master scanner for CompactLogix PLCs
- Communication bridge between PLC and field devices
- Integration of legacy DeviceNet drives and I/O modules
- Support for mixed automation architectures
It is commonly found in older but still operational industrial installations.
Recommended Related Modules
| Model | Function |
|---|---|
| 1769-L33ER | CompactLogix Controller |
| 1769-PA2 | AC Compact I/O Power Supply |
| 1769-PB2 | DC Compact I/O Power Supply |
| 1769-OB16 | Digital Output Module |
| 1769-IF8 | Analog Input Module |
| 1769-ECR | End Cap Module |
Common Allen Bradley Control System Components
| Model | Role |
|---|---|
| 1756-EN2T | EtherNet/IP Communication Module |
| 1756-L81E | ControlLogix Controller |
| 1734-AENTR | POINT I/O Ethernet Adapter |
| 5069-IB16 | Compact 5000 Input Module |
| 2711P-T10C4D8 | PanelView HMI Terminal |
| 2080-LC50-48QWB | Micro850 Controller |
