1784-U2DN Allen-Bradley USB DeviceNet Programming Cable

1784-U2DN Allen-Bradley USB to DeviceNet Programming Cable

Product Introduction

The 1784-U2DN is a specialized USB to DeviceNet cable manufactured by Allen-Bradley. Its primary function is to connect a personal computer to a DeviceNet network through a standard USB port. This cable enables programming, configuration, and monitoring of DeviceNet devices. Furthermore, it includes a node address selector switch and multiple status indicators for easy diagnostics. Therefore, it serves as an essential tool for engineers and field technicians working with DeviceNet networks.

Technical Specifications

Data Rate Support and Configuration

The 1784-U2DN supports three distinct data rates: 125 kbps, 250 kbps, and 500 kbps. A dedicated data rate switch on the cable allows you to select the desired speed. Additionally, the cable can automatically detect the communication rate of an active DeviceNet network. If the cable cannot detect the rate, it defaults to a fallback data rate of 125 kbps. Therefore, you can always establish a connection even in unknown network environments.

Electrical Characteristics

The 1784-U2DN draws power directly from the USB connection with a supply voltage of 5 Volts DC. It consumes 0.5 Watts of power and dissipates the same amount as heat. For the DeviceNet side, the cable requires 24 Volts DC at 75 mA. Meanwhile, the USB side uses 75 mA as well. These low power requirements make the cable suitable for portable applications.

Environmental Ratings and Certifications

This cable carries an IP 20 enclosure rating, meaning it is protected against solid objects larger than 12.5 mm. The operating temperature range is 0 to 55 degrees Celsius. Moreover, the 1784-U2DN complies with several international standards, including C-Tick, CE, KC, and UL. Consequently, it meets global regulatory requirements for industrial communication devices.

Node Address Selection

A node address selector switch is located on the side of the device. You can rotate this switch to select different node addresses for the DeviceNet connection. This feature simplifies network configuration and prevents address conflicts. Therefore, you can easily integrate the cable into existing DeviceNet networks without additional hardware.

Physical Design and Installation

Connector Types and Cable Length

One end of the 1784-U2DN features a standard USB connector for the host computer. The other end comes with an open style male 5-pin Phoenix connector for DeviceNet connections. The total cable length is 0.61 meters, which provides convenient reach for most workstation setups.

Mounting and Portability

The 1784-U2DN includes a mounting unit for easy installation. You can mount it securely in a control cabinet or use it as a portable programming tool. Its lightweight design, weighing only 0.23 lbs, makes it highly portable for field use.

Driver Installation Process

To use the 1784-U2DN, you must install the appropriate driver on your computer. Once the driver installation completes, the operating system recognizes the cable and assigns the necessary communication resources. Therefore, verify the driver version compatibility with your operating system before installation.

Status Indicators and Diagnostics

LED Indicators Overview

The 1784-U2DN comes with three status indicators for comprehensive diagnostics:

• Module Status: Indicates the internal state of the cable.

• USB Status: Shows the host connection and communication state.

• Network Status: Reports DeviceNet network activity.

LED Color and Signal Meanings

These LEDs display blue and red colors to signal various operational states. Specifically, they indicate network activity, module status, self-test procedures, and standby mode status. Therefore, operators can quickly diagnose connection issues without using additional diagnostic tools.

Packaging List

• 1784-U2DN USB to DeviceNet Programming Cable (1 unit)

• Node address selector switch (integrated)

• Data rate selector switch (integrated)

• LED status indicators (built-in)

• Packaging excludes software CDs, mounting hardware, certificates, and warranty documents

Shipping and Delivery

All orders are processed promptly and shipped securely. For global deliveries, we partner with FedEx, UPS, and DHL. The 1784-U2DN is carefully packed in anti-static material to prevent damage during transit. Additionally, we provide tracking information for every shipment so you can monitor your order in real time.

Frequently Asked Questions (FAQ)

1. What data rates does the 1784-U2DN support?
The 1784-U2DN supports three data rates: 125 kbps, 250 kbps, and 500 kbps. You can select the rate using the dedicated switch on the cable.

2. How does the 1784-U2DN handle data rate detection?
It automatically detects the communication rate of an active DeviceNet network. If the cable cannot detect a rate, it uses a fallback default of 125 kbps.

3. What do the LED indicators on the 1784-U2DN show?
The LEDs display blue and red signals for module status, USB status, network activity, self-test, and standby mode. They help you quickly diagnose connection issues.

4. Is the 1784-U2DN certified for international use?
Yes, the 1784-U2DN complies with C-Tick, CE, KC, and UL standards, making it suitable for global industrial applications.

5. Can I mount the 1784-U2DN in a control cabinet?
Yes, the cable includes a mounting unit for easy installation. You can mount it securely in a cabinet or use it as a portable programming tool.