Rockwell Automation 1784-U2CN User manual
Installation Instructions
USB-to-ControlNet Cable
Catalog Number 1784-U2CN
Topic Page
Important User Information 2
Environment and Enclosure 3
About the Cable 4
Install the Cable 5
Status Indicators 9
Specifications 11
Additional Resources 14
2USB-to-ControlNet Cable
Publication 1784-IN047A-EN-P - November 2008
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://literature.rockwellautomation.com) 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.
IMPORTANT Identifies information that is critical for successful application and understanding of
the product.
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.
Labels may be on or inside the equipment (for example, a drive or motor) to alert
people that dangerous voltage may be present.
Labels may be on or inside the equipment (for example, a drive or motor) to alert
people that surfaces may reach dangerous temperatures.
SHOCK HAZARD
BURN HAZARD
USB-to-ControlNet Cable 3
Publication 1784-IN047A-EN-P - November 2008
Environment and Enclosure
At the end of its life, this equipment should be collected
separately from any unsorted municipal waste.
ATTENTION This equipment is intended for use in overvoltage Category II applications (as
defined in IEC publication 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 Publication 11. Without appropriate precautions, there may be
potential difficulties ensuring electromagnetic compatibility in other
environments due to conducted as well as radiated disturbance.
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 publications:
xpublication 1770-4.1,Industrial Automation Wiring and Grounding
Guidelines, for additional installation requirements.
xNEMA Standards publication 250 and IEC publication 60529, as
applicable, for explanations of the degrees of protection provided by
different types of enclosures.
4USB-to-ControlNet Cable
Publication 1784-IN047A-EN-P - November 2008
About the Cable
The 1784-U2CN USB-to-ControlNet cable lets you connect a notebook or
desktop computer to a ControlNet network by using an unused USB port on
the computer. The product replaces the 1784-PCC communication card for
computers that do not have PCMCIA slots.
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).
USB Cable
Status Indicators
RJ45 ControlNet Network Connector
Node Address Switches
USB-to-ControlNet Cable 5
Publication 1784-IN047A-EN-P - November 2008
Install the Cable
Follow these procedures to install the cable.
Obtain the Device Driver for the Cable
Follow these steps to download and install the device driver for the cable.
1. Visit http://www.rockwellautomation.com/knowledgebase/.
2. Open tech note ID 55431 and follow the instructions in the tech note
to install the driver.
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:
xTouch a grounded object to discharge potential static.
xDo not touch connectors or pins.
xStore the equipment in appropriate static-safe packaging when not in
use.
IMPORTANT A minimum of RSLinx Classic software, version 2.51, is required for use with
the cable.
IMPORTANT If RSLinx Classic software, version 2.54 or later, is installed on the computer,
the device driver is already installed on the computer. Skip this section.
6USB-to-ControlNet Cable
Publication 1784-IN047A-EN-P - November 2008
Configure and Connect the Cable
1. Use the rotary switches to set the module node address to a valid
number (1…99).
2. Insert the end of the cable having the USB connector into a USB port
on a computer.
ATTENTION USB and ControlNet connection lengths must be less than 3 meters. Do not
attempt to extend the cables.
Node Address
(Rotary) Switches
USB-to-ControlNet Cable 7
Publication 1784-IN047A-EN-P - November 2008
3. Insert the end of the cable having the RJ45 network connector into
the ControlNet network access port (NAP) of a ControlNet
network-enabled device.
Traffic Analyzer Software
The 1784-U2CN cable is designed to work with Frontline’s NetDecoder
traffic analyzer software. For more information on Frontline’s product, go to
either http://www.rockwellautomation.com/encompass/ or
http://www.fte.com.
USB Cable
RJ45 ControlNet Network Connector
8USB-to-ControlNet Cable
Publication 1784-IN047A-EN-P - November 2008
Product Dimensions
The following illustration shows the product dimensions.
USB Cable Length
0.61 m (2 ft)
Enclosure
Length: 7.62 cm (3 in.)
Width: 5.08 cm (2 in.)
Thickness: 2.54 cm (1 in.) ControlNet NAP Cable Length
3.05 m (10 ft)
USB-to-ControlNet Cable 9
Publication 1784-IN047A-EN-P - November 2008
Status Indicators
The following table describes the cable status indicators.
Indicator Status Description
USB Green The cable is configured, but no network traffic
is present.
Flashing green Network traffic is present.
Off Unable to transfer data.
xDisconnected from host.
xIn one of the following states:
–default
–powered
–address
–suspend
USB
ControlNet
Network Status
Module
Status
10 USB-to-ControlNet Cable
Publication 1784-IN047A-EN-P - November 2008
Module Status (MS) Green The cable is operating normally.
Off No power to the cable.
Flashing green The cable is operating in a normal condition
and is online with no connections established.
xThe cable may be in Standby mode.
xThe cable needs commissioning due to
missing, incomplete, or incorrect
configuration.
Flashing red The cable has a recoverable fault.
Red The cable has an unrecoverable fault and may
need to be replaced.
Flashing
red/green
The cable is performing a self-test.
ControlNet Network
Status (NS)
Off Not on network.
Red Network interface faulted.
Flashing
red/green
Invalid network configuration (for example, a
MAC ID above UMAX).
Flashing red xDuplicate node detected.
xLink fault.
xNo MAC frames received.
Flashing green xTemporary channel error.
xListen only.
Green Normal operation. MAC frame received
without error.
Indicator Status Description
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