Product Overview
The Allen-Bradley 1784-U2DN is a USB to DeviceNet cable designed to link a personal computer's USB port directly to a DeviceNet network. This compact industrial automation module simplifies commissioning and troubleshooting by providing a plug-and-play interface for network configuration and monitoring. With a 0.61-meter cable length and a durable IP20-rated enclosure, the 1784-U2DN is built for bench-top and panel-side use in industrial environments.
Key Features & Benefits
-
Multiple data rates: Supports 125, 250, and 500 kbps, selectable via a rotary switch, with automatic fallback to 125 kbps when the network rate cannot be detected.
-
USB-powered operation: Draws 5 VDC at 75 mA from the host USB port, eliminating the need for an external power supply.
-
DeviceNet supply: Provides 24 VDC at 75 mA to power the DeviceNet network side.
-
Status indicators: Blue and red LEDs display network activity, module status, self-test, and standby mode.
-
Node address selection: A rotary switch on the side allows easy node address configuration.
-
Industry certifications: Certified to C-Tick, CE, KC, and UL standards for global use.
Technical Specifications
| Specification |
Value |
| Part Number |
1784-U2DN |
| Brand |
Allen-Bradley / Rockwell Automation |
| Series |
PLC 5 |
| Description |
USB to DeviceNet cable |
| Length |
0.61 meters |
| Enclosure Rating |
IP 20 |
| Standards |
C-Tick, CE, KC, UL |
| Data Rate |
125/250/500 kbps |
| Voltage |
5 Volts DC |
| Power Consumption |
0.5 Watts |
| Power Dissipation |
0.5 Watts |
| DeviceNet Supply |
24 Volts at 75 mA |
| Weight |
0.23 lbs |
Installation & Setup Guidance
Installing the Allen-Bradley 1784-U2DN is straightforward. First, install the required driver software on the host computer. Then, connect the USB end of the cable to an available USB port. Use the rotary switch on the side to set the desired node address. Finally, set the data rate switch to match your network's speed (125, 250, or 500 kbps). The cable will automatically detect the network rate if the switch is left in auto mode, falling back to 125 kbps if detection fails. The IP20 enclosure is not water-resistant, so mount the unit in a dry, clean location away from moisture and debris.
Maintenance & Reliability
Routine maintenance of the 1784-U2DN is minimal. Periodically inspect the USB and DeviceNet connectors for dust or corrosion, and ensure the cable is not kinked or stressed. The operating environment should not exceed 55°C to maintain reliable performance. With no moving parts and a robust design, the 1784-U2DN offers long service life when used within its specified ratings.
Compatibility & Integration
The 1784-U2DN is designed to interface with any standard USB port on a PC and connect to DeviceNet networks. It is compatible with Rockwell Automation software tools that support DeviceNet configuration and monitoring. The 5-pin Phoenix connector provides a secure connection to DeviceNet trunk lines. This cable is an essential tool for engineers and technicians working with Allen-Bradley PLCs and DeviceNet-based systems.
Selection Guide & Purchasing Advice
Before purchasing, verify that your computer has an available USB port and that your DeviceNet network operates at one of the supported data rates (125, 250, or 500 kbps). Confirm the required cable length (0.61 m) fits your setup. The 1784-U2DN is a genuine Allen-Bradley product, ensuring compatibility and reliability. PLC Source PRO offers this industrial automation module with fast shipping and competitive pricing, making it a trusted source for your control system spares.