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Installation Instructions
USB-to-Data Highway Plus Cable
Catalog Number 1784-U2DHP
Topic |
Page |
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Important User Information |
2 |
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Environment and Enclosure |
3 |
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Install the Cable |
5 |
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Configure the DH+ Node Address |
11 |
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Consider the Traffic Analyzer Software |
11 |
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About Using Multiple Cables |
12 |
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Status Indicators |
13 |
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Specifications |
15 |
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Additional Resources |
18 |
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About the Cable
The 1784-U2DHP USB-to-Data Highway Plus Cable lets you connect a computer to a Data Highway Plus (DH+) network via an unused USB port on the computer. You can also use the cable to connect the computer to PLC-5 processors (except for Classic PLC-5 processors, such as PLC-5/10, PLC-5/12, PLC-5/15, and PLC-5/25) or SLC 5/04 processors. Communication on the
DH+ link requires the RSLinx Classic software DF1 serial 1770-KF2/1785-KE drive.
2 USB-to-Data Highway Plus 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-IN045C-EN-P - May 2010
USB-to-Data Highway Plus 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 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:
• Industrial Automation Wiring and Grounding Guidelines, Rockwell Automation 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 different types of enclosure.
Preventing Electrostatic Discharge
ATTENTION: 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.
•Do not touch connectors or pins on component boards.
•Store the equipment in appropriate static-safe packaging when not in use.
Rockwell Automation Publication 1784-IN045C-EN-P - May 2010
4 USB-to-Data Highway Plus Cable
At the end of its life, this equipment should be collected separately from any unsorted municipal waste.
IMPORTANT The cable will not connect to Classic PLC-5 processors, such as PLC-5/10, PLC-5/12, PLC-5/15, and PLC-5/25, without an adapter. An adapter can be purchased separately from third-party companies.
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-U2DHP cable replaces both the 1784-PCMK communication card and 1784-PCM6 cable (for computers without PCMCIA slots).
8-pin DIN Cable
2.44 m (8 ft)
Status Indicators
Communication
Rate Switch
USB Cable 0.61 m (2 ft)
Rockwell Automation Publication 1784-IN045C-EN-P - May 2010
USB-to-Data Highway Plus Cable 5
The cable operates at DH+ communication rates of 57.6 Kbps, 115.2 Kbps, and
230.4 Kbps.
IMPORTANT The DH+ communication rate is read only when power is applied. To change the communication rate, you must disconnect the cable from the USB port, use the Communication Rate switch to change the communication rate setting, then reconnect the cable to the USB port.
The 1784-U2DHP cable supports these DH+ network cable lengths.
DH+ Communication Rate |
Max. DH+ Network Cable Length |
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57.6 Kbps |
3048 m (10,000 ft) |
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115.2 Kbps |
1524 m (5000 ft) |
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230.4 Kbps |
762 m (2500 ft) |
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Install the Cable
Follow the procedures on the following pages to install the cable.
Obtain the Device Driver for the Cable
Follow these steps to download the device driver for the cable.
IMPORTANT If RSLinx Classic software, version 2.53 or later, is installed on the computer, the device driver is already installed on the computer. Skip this section.
1.Visit http://www.rockwellautomation.com/support/pccards.
2.Click the 1784_u2dhp.inf file.
3.Save the file to a directory on the computer on which you want to install the cable.
Rockwell Automation Publication 1784-IN045C-EN-P - May 2010
6 USB-to-Data Highway Plus Cable
Connect and Configure the Cable
1.Insert the end of the cable having the USB connector into an unused
USB port on a computer.
The Found New Hardware wizard appears.
TIP |
If you do not see the Found New Hardware wizard, the drivers |
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have already been installed. If RSLinx Classic software, version |
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2.53 or later, is installed on the computer, the device driver was |
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installed at C:\Program Files\Rockwell |
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Software\RSLINX\PnP_Drivers\1784-U2DHP. |
If you do not see the Found New Hardware wizard, proceed to step 9. Otherwise, continue with the next step.
2.Select No, not this time and click Next.
3.Select Install from a list or specific location and click Next.
4.Select Search for the best driver.
5.Check only the Include this location checkbox.
6.Browse to the location where you saved the 1784_u2dhp.inf file and click OK.
7.Click Next.
8.Click Finish.
TIP |
If you see a Microsoft Windows error message that displays |
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code 10, disconnect the cable from the USB port, then reconnect |
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the cable to the USB port, so that the Windows operating system |
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recognizes the device. |
Rockwell Automation Publication 1784-IN045C-EN-P - May 2010
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