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Installation Instructions
USB-to-DeviceNet Cable
Catalog Number 1784-U2DN
Topic |
Page |
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Important User Information |
2 |
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Environment and Enclosure |
3 |
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About the Cable |
4 |
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Install the Cable |
5 |
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Status Indicators |
10 |
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Additional Resources |
15 |
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2 USB-to-DeviceNet Cable
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/) describes some important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard and recognize the consequences.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, drive or motor, to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, drive or motor, to alert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information that is critical for successful application and understanding of the product.
Rockwell Automation Publication 1784-IN046D-EN-P - April 2011
USB-to-DeviceNet Cable 3
Environment and Enclosure
ATTENTION: This equipment is intended for use in overvoltage Category II applications (as defined in IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR 11. Without appropriate precautions, there may be potential difficulties with electromagnetic compatibility in residential and other environments due to conducted and radiated disturbances.
This equipment is supplied as enclosed equipment. It should not require additional system enclosure when used in locations consistent with the enclosure type ratings stated in the Specifications section of this publication. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings, beyond what this product provides, that are required to comply with certain product safety certifications.
In addition to this publication, see the following:
•Industrial Automation Wiring and Grounding Guidelines, , publication 1770-4.1, for additional installation requirements
•NEMA Standard 250 and IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosures
At the end of its life, this equipment should be collected separately from any unsorted municipal waste.
Rockwell Automation Publication 1784-IN046D-EN-P - April 2011
4 USB-to-DeviceNet Cable
About the Cable
The 1784-U2DN USB-to-DeviceNet cable lets you connect a computer to a
DeviceNet network via an unused USB port on the computer.
IMPORTANT To comply with the CE low voltage directive (LVD), this equipment must be powered from a source compliant with safety extra low voltage (SELV) or protected extra low voltage (PELV).
The 1784-U2DN cable replaces the 1784-PCD communication card.
USB Cable |
Status Indicators |
Data Rate (DR) Switch
Five-pin Female DeviceNet
Node Address
Switches
Network Connector
The cable operates at data rates of 125 Kbps, 250 Kbps, and 500 Kbps.
IMPORTANT The data rate is read only when power is applied. To change the data rate, you must disconnect the cable from the USB port, use the data rate switch to change the data rate setting, then reconnect the cable to the USB port.
Rockwell Automation Publication 1784-IN046D-EN-P - April 2011
USB-to-DeviceNet Cable 5
These are the firmware variations:
•Cables with version 1.009 or later contain a fix for an anomaly whereby timeouts could be experienced while monitoring parameters of some devices. The initial installation of a 1784-U2DN USB-to-DeviceNet cable will no longer cause the Windows operating system to report an error code 10.
•Cables with version 1.008 or later have an explicit message size of 500 bytes, which allows uploading from a SmartGuard controller.
Install the Cable
Follow these procedures to install the cable.
ATTENTION: Prevent Electrostatic Discharge
This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:
•Touch a grounded object to discharge potential static.
•Wear an approved grounding wriststrap.
•Do not touch connectors or pins on component boards.
•Do not touch circuit components inside the equipment.
•Use a static-safe workstation, if available.
•Store the equipment in appropriate static-safe packaging when not in use.
ATTENTION: USB connection length must be less than 3 m (9.84 ft). Do not attempt to extend the cable.
Rockwell Automation Publication 1784-IN046D-EN-P - April 2011
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