Important Information
Warranty
The PXI hardware is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as
evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be
defective during the warranty period. This warranty includes parts and labor.
The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to
defects in materials and workmanship, for a period of 90 days from date of shipment, as evidenced by receipts or other documentation.
National Instruments will, at its option, repair or replace software media that do not execute programming instructions if National
Instruments receives notice of such defects during the warranty period. National Instruments does not warrant that the operation of the
software shall be uninterrupted or error free.
A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the outside of the package
before any equipment will be accepted for warranty work. National Instruments will pay the shipping costs of returning to the owner
parts which are covered by warranty.
National Instruments believes that the information in this document is accurate. The document has been carefully reviewed for technical
accuracy. In the event that technical or typographical errors exist, National Instruments reserves the right to make changes to subsequent
editions of this document without prior notice to holders of this edition. The reader should consult National Instruments if errors are
suspected. In no event shall National Instruments be liable for any damages arising out of or related to this document or the information
contained in it.
EXCEPT AS SPECIFIED HEREIN, NATIONAL INSTRUMENTS MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND SPECIFICALLY DISCLAIMS ANY WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE
PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER. NATIONAL INSTRUMENTS WILL NOT BE
LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS, OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED
OF THE POSSIBILITY THEREOF. This limitation of the liability of National Instruments will apply regardless of the form of action, whether
in contract or tort, including negligence. Any action against National Instruments must be brought within one year after the cause of
action accrues. National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control. The
warranty provided herein does not cover damages, defects, malfunctions, or service failures caused by owner’s failure to follow the
National Instruments installation, operation, or maintenance instructions; owner’s modification of the product; owner’s abuse, misuse,
or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties, or other events outside reasonable control.
Copyright
Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including
photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent
of National Instruments Corporation.
Trademarks
CVI™, LabVIEW™, Measurement Studio™, National Instruments™, NI-CAN™, ni.com™, and RTSI™ are trademarks of
National Instruments Corporation.
Product and company names mentioned herein are trademarks or trade names of their respective companies.
WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
(1) NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF
RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL
COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED
TO CAUSE SIGNIFICANT INJURY TO A HUMAN.
(2) IN ANY APPLICATION, INCLUDING THE ABOVE, RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS
CAN BE IMPAIRED BY ADVERSE FACTORS, INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL
POWER SUPPLY, COMPUTER HARDWARE MALFUNCTIONS, COMPUTER OPERATING SYSTEM SOFTWARE FITNESS,
FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION, INSTALLATION
ERRORS, SOFTWARE AND HARDWARE COMPATIBILITY PROBLEMS, MALFUNCTIONS OR FAILURES OF
ELECTRONIC MONITORING OR CONTROL DEVICES, TRANSIENT FAILURES OF ELECTRONIC SYSTEMS (HARDWARE
AND/OR SOFTWARE), UNANTICIPATED USES OR MISUSES, OR ERRORS ON THE PART OF THE USER OR
APPLICATIONS DESIGNER (ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED
“SYSTEM FAILURES”). ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO
PROPERTY OR PERSONS (INCLUDING THE RISK OF BODILY INJURY AND DEATH) SHOULD NOT BE RELIANT SOLELY
UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE. TO AVOID DAMAGE, INJURY,
OR DEATH, THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT
AGAINST SYSTEM FAILURES, INCLUDING BUT NOT LIMITED TO BACK-UP OR SHUT DOWN MECHANISMS. BECAUSE
EACH END-USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS' TESTING PLATFORMS
AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN
COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL
INSTRUMENTS, THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND
VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS
PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE
APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION.
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Compliance
FCC/Canada Radio Frequency Interference Compliance*
Determining FCC Class
The Federal Communications Commission (FCC) has rules to protect wireless communications from interference.
The FCC places digital electronics into two classes. These classes are known as Class A (for use in industrial-
commercial locations only) or Class B (for use in residential or commercial locations). Depending on where it is
operated, this product could be subject to restrictions in the FCC rules. (In Canada, the Department of
Communications (DOC), of Industry Canada, regulates wireless interference in much the same way.)
Digital electronics emit weak signals during normal operation that can affect radio, television, or other wireless
products. By examining the product you purchased, you can determine the FCC Class and therefore which of the two
FCC/DOC Warnings apply in the following sections. (Some products may not be labeled at all for FCC; if so, the
reader should then assume these are Class A devices.)
FCC Class A products only display a simple warning statement of one paragraph in length regarding interference and
undesired operation. Most of our products are FCC Class A. The FCC rules have restrictions regarding the locations
where FCC Class A products can be operated.
FCC Class B products display either a FCC ID code, starting with the letters EXN,
or the FCC Class B compliance mark that appears as shown here on the right.
FCC/DOC Warnings
This equipment generates and uses radio frequency energy and, if not installed and used in strict accordance with the
instructions in this manual and the CE Mark Declaration of Conformity**, may cause interference to radio and
television reception. Classification requirements are the same for the Federal Communications Commission (FCC)
and the Canadian Department of Communications (DOC).
Changes or modifications not expressly approved by National Instruments could void the user’s authority to operate
the equipment under the FCC Rules.
Class A
Federal Communications Commission
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
Canadian Department of Communications
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
Class B
Federal Communications Commission
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
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•
•
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Canadian Department of Communications
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
European Union - Compliance to EEC Directives
Readers in the EU/EEC/EEA must refer to the Manufacturer's Declaration of Conformity (DoC) for information**
pertaining to the CE Mark compliance scheme. The Manufacturer includes a DoC for most every hardware product
except for those bought for OEMs, if also available from an original manufacturer that also markets in the EU, or
where compliance is not required as for electrically benign apparatus or cables.
*
Certain exemptions may apply in the USA, see FCC Rules §15.103 Exempted devices, and §15.105(c).
Also available in sections of CFR 47.
** The CE Mark Declaration of Conformity will contain important supplementary information and instructions
for the user or installer.
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About This Manual
How To Use the Manual Set..........................................................................................xi
Chapter 1
Introduction
Hardware Overview.......................................................................................................1-1
Chapter 2
Installing for Windows NT 4.0........................................................................2-1
Install the Hardware.......................................................................................................2-3
Install Your PXI-8460, PXI-8461 or PXI-8462 ..............................................2-3
Connect the Cables..........................................................................................2-4
Configure the NI-CAN Software...................................................................................2-5
Chapter 3
Verify the Installation
Chapter 4
Begin to Use the NI-CAN Software
Appendix A
Uninstalling the Hardware and Software
Uninstalling the Hardware from Windows NT..............................................................A-1
Uninstalling the NI-CAN Software from Windows NT................................................A-1
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Contents
Appendix B
Bus Power Supply Requirements.................................................................................. B-3
Cable Specifications...................................................................................................... B-4
Number of Devices........................................................................................................ B-4
Determining the Necessary Termination Resistance for Your Board............. B-5
Appendix C
Bus Power Supply Requirements.................................................................................. C-4
Cable Specifications...................................................................................................... C-5
Number of Devices........................................................................................................ C-6
Cable Termination......................................................................................................... C-6
Cabling Example ........................................................................................................... C-7
Appendix D
Port Identification.......................................................................................................... D-1
Appendix E
RTSI Bus
Appendix F
Diagnostic Utility Failures ............................................................................................ F-1
Resource Errors............................................................................................... F-1
NI-CAN Software Problem Encountered ....................................................... F-2
Missing Board in Diagnostic Utility ............................................................... F-2
Hardware Problem Encountered ..................................................................... F-2
Common Questions ....................................................................................................... F-2
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Contents
Appendix G
Appendix H
Technical Support Resources
Glossary
Index
Figures
Figure 2-1.
Figure 2-3.
Add/Remove Programs Properties Dialog Box.....................................2-2
PXI-8461 That Is Working Properly.....................................................2-5
Figure B-2.
PXI-8460 Parts Locator Diagram..........................................................B-2
Figure C-1.
Figure C-2.
Figure C-3.
Figure C-4.
Figure C-5.
Figure C-6.
Pinout for 9-Pin D-Sub Connector ........................................................C-1
Pinout for 5-Pin Combicon-Style Pluggable Screw Terminal ..............C-2
PXI-8461 Part Locator Diagram ...........................................................C-3
Power Source Jumpers ..........................................................................C-4
Termination Resistor Placement ...........................................................C-6
Cabling Example ...................................................................................C-7
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Contents
Tables
Table B-1.
Power Requirements for the Low-Speed CAN Physical Layer
for Bus-Powered Versions .................................................................... B-3
ISO 11519-2 Specifications for Characteristics of a CAN_H
Table B-2.
Table C-1.
Table C-2.
Table C-3.
Table E-1.
for Bus-Powered Versions .................................................................... C-4
ISO 11898 Specifications for Characteristics of a CAN_H
and CAN_L Pair of Wires..................................................................... C-5
DeviceNet Cable Length Specifications ............................................... C-5
Pins Used By the PXI-846x Series Boards ........................................... E-2
PXI-846x and NI-CAN for Windows NT
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About This Manual
This manual contains instructions to help you install and configure your
PXI-8460 (low speed; one port or two port), PXI-8461 (high speed; one
port or two port) or PXI-8462 (dual speed; port one high-speed, port two
low-speed) and the NI-CAN software for Windows NT. This guide uses
PXI-8460 or PXI-8461 to refer to both the one port and two port versions
of the boards.
This manual assumes that you are already familiar with Windows NT.
How To Use the Manual Set
Installation and
Configuration
Getting Started
Manual
Novice
Users
Experienced
Users
NI-CAN
NI-CAN Programmer
User Manual
Reference Manual
Application
Development
and Examples
Function
and Object
Descriptions
Use this getting started manual to install and configure your PXI-8460,
PXI-8461, or PXI-8462 and the NI-CAN software for Windows NT.
develop an application program. The user manual also contains debugging
information and detailed examples.
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About This Manual
Use the NI-CAN Programmer Reference Manual for specific information
about each NI-CAN function and object, including format, parameters, and
possible errors.
Conventions
The following conventions appear in this manual:
»
The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash.
bold
Bold text denotes items that you must select or click on in the software,
such as menu items and dialog box options. Bold text also denotes
parameter names.
italic
Italic text denotes variables, emphasis, a cross reference, or an introduction
to a key concept. This font also denotes text that is a placeholder for a word
or value that you must supply.
monospace
Text in this font denotes text or characters that you should enter from the
keyboard, sections of code, programming examples, and syntax examples.
This font is also used for the proper names of disk drives, paths, directories,
programs, subprograms, subroutines, device names, functions, operations,
variables, filenames and extensions, and code excerpts.
monospace italic
Italic text in this font denotes text that is a placeholder for a word or value
that you must supply.
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About This Manual
Related Documentation
The following documents contain information that you may find helpful as
you read this manual:
•
ANSI/ISO Standard 11898-1993, Road Vehicles—Interchange of
Digital Information—Controller Area Network (CAN) for High-Speed
Communication
•
ANSI/ISO Standard 11519-2-1994, Road Vehicles—Low-Speed
Serial Data Communication—Part 2: Low-Speed Controller Area
Network (CAN)
•
•
•
•
•
CAN Specification Version 2.0, 1991, Robert Bosch Gmbh.,
Postfach 500, D-7000 Stuttgart 1
CiA Draft Standard 102, Version 2.0, CAN Physical Layer for
Industrial Applications
CompactPCI Specification, Revision 2.0, PCI Industrial Computers
Manufacturers Group
DeviceNet Specification, Version 2.0, Open DeviceNet Vendor
Association
PXI Specification, Revision 1.0, National Instruments Corporation
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1
Introduction
This chapter lists what you need to get started, provides an overview of the
PXI hardware and the NI-CAN software for Windows NT, and describes
optional equipment you can order.
What You Need to Get Started
Make sure you have all of the following items before you attempt to install
the hardware and software:
❑ Windows NT 3.51 or later installed on your computer
–
–
–
–
–
PXI-8460 one port
PXI-8460 two port
PXI-8461 one port
PXI-8461 two port
PXI-8462 two port
Version 1.4
(Disk x of 4)
❑ CAN interface cables that meet the requirements in Appendix B,
Cabling Requirements for PXI-8460 Low-Speed CAN, Appendix C,
Cabling Requirements for PXI-8461 High-Speed CAN, or
Appendix D, Cabling Requirements for PXI-8462 Dual-Speed CAN.
Hardware Overview
The PXI-8460 or PXI-8461 (one port and two port) and PXI-8462 are
software configurable and compliant with the PXI Specification and
board, you can make your PXI or CompactPCI chassis communicate with
and control CAN devices.
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Chapter 1
Introduction
The PXI-8461 physical layer fully conforms to the ISO 11898 physical
layer specification for CAN and is optically isolated to 500 V. The
PXI-8460 physical layer conforms to the ISO 11519-2 physical layer
specification for CAN and is also optically isolated to 500 V. CAN
interfacing is accomplished using the Intel 82527 CAN controller chip.
The PXI-8461 supports a wide variety of transfer rates up to 1 Mb/s. The
PXI-8460 supports rates up to 125 kb/s. The PXI-8462 is a dual-speed
board, with port one configured as a high-speed port (ISO 11898), and port
two configured as a low-speed port (ISO 11519-2). The CAN physical
layer on the PXI-8460, PXI-8461, and PXI-8462 can be powered either
internally (from the board) or externally (from the bus cable power). The
power source for the CAN physical layer for each port is configured with
a jumper.
PXI-8461 boards are available with two physical connector types:
•
•
DB-9 D-Sub
Combicon-style pluggable screw terminals
PXI-8460 and PXI-8462 boards are available with DB-9 D-Sub connectors.
The PXI-846x series boards use the Real-Time System Integration (RTSI)
bus to solve the problem of synchronizing several functions across multiple
by using the National Instruments PXI trigger bus to route timing and
trigger signals between the CAN hardware and National Instruments DAQ,
IMAQ, or additional CAN hardware. Although the PXI-846x series board
with RTSI bus is available in a PXI chassis, there are important issues
to consider when using it in a CompactPCI chassis. Please refer to
Appendix E, RTSI Bus, for detailed information about the PXI-846x series
RTSI interface.
The PXI-8460, PXI-8461 and PXI-8462 boards use the Intel 386EX
embedded processor to implement time-critical features provided by the
NI-CAN software. The PXI-8460, PXI-8461 and PXI-8462 communicate
with the NI-CAN driver through on-board shared memory and an interrupt.
NI-CAN Software Overview
The NI-CAN software includes a native, 32-bit multitasking Windows NT
kernel driver. The NI-CAN software is fully integrated into the
Windows NT operating system. You can configure it through the
Windows NT Control Panel and uninstall it through the Add/Remove
Programs applet of the Control Panel.
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Chapter 1
Introduction
The NI-CAN software for Windows NT supports the concurrent use of
multiple CAN boards. For example, you can use two PXI-8461 boards in
the same system at the same time.
The NI-CAN software, along with the PXI hardware, transforms your
computer into a CAN interface with complete communications and bus
management capability. The NI-CAN software includes the following
components:
•
•
•
•
•
Firmware (runs on embedded Intel 386EX)
Device driver
Diagnostic test utility
Configuration utility
Language interface libraries for Microsoft Visual C/C++ 2.0 or later,
LabWindows/CVI 4.0 or later, and LabVIEW 4.0 or later
•
Example programs that use NI-CAN functions
Optional Programming Tools
Your kit includes the NI-CAN software for Windows NT. In addition,
you can order the following software from National Instruments.
LabVIEW is a complete programming environment that departs from the
sequential nature of traditional programming languages and features a
graphical programming environment. It includes all the tools needed for
instrument control, data acquisition, analysis, and presentation. LabVIEW
also includes an extensive instrument driver library.
Measurement Studio bundles LabWindows/CVI among other tools for
C programmers designed for building measurement and automation
applications. LabWindows/CVI is an interactive ANSI C development
environment for building test and measurement and instrument control
systems. It includes interactive code-generation tools and a graphical editor
for building custom user interfaces. It also includes built-in libraries for
IEEE 488.2, VXI, RS-232 control, and plug-in data acquisition. When you
order LabWindows/CVI, you also get hundreds of complete instrument
drivers, which are modular, source-code programs that handle the
communication with your instrument so that you do not have to learn
the programming details.
BridgeVIEW is a radical departure from traditional automation software
that provides a flexible program development system for a variety of
CAN applications including general manufacturing, test, and control.
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Chapter 1
Introduction
Leveraging National Instruments patented graphical programming
language G (otherwise known as LabVIEW), BridgeVIEW gives you the
ability to integrate functionality in a way that is not possible with traditional
automation software. In addition to the programming advantages of G,
BridgeVIEW also provides a number of features for the development of
your industrial automation application: graphical HMI (Human Machine
Interface); ease of use; fill-in-the-blank configuration utilities; HMI G
Wizard for simplified HMI development; historical data collection and
trending; alarm and event reporting and logging; security; and connectivity
to PLCs and industrial device networks like DeviceNet.
For more information about Measurement Studio, LabVIEW, and
BridgeVIEW, contact National Instruments.
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2
Installation and Configuration
This chapter describes how to install and configure the NI-CAN software
for Windows NT and the PXI-8460, PXI-8461 or PXI-8462 hardware.
Install the NI-CAN Software
Install the NI-CAN software for Windows NT before you install your
hardware.
Installation for Windows NT 3.51
1. Log on as Administrator or as a user with Administrator privileges.
The NI-CAN setup program must have Administrator privileges
because the program modifies the configuration registry of your
system.
2. Insert the CD, NI-CAN for Windows NT/9x.
x:\setup
where xis the letter of your CD drive.
4. After the software installs, shut down Windows NT and turn off your
computer when the setup is complete.
5. Proceed to the section Install the Hardware.
Installing for Windows NT 4.0
1. Log on as Administrator or as a user with Administrator privileges.
The NI-CAN setup program must have Administrator privileges
because the program modifies the configuration registry of your
system.
2. Select Start»Settings»Control Panel.
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Chapter 2
Installation and Configuration
3. Double-click on the Add/Remove Programs icon in the Control Panel
to launch the Add/Remove Programs applet. A dialog box similar to
the one in Figure 2-1 appears.
Figure 2-1. Add/Remove Programs Properties Dialog Box
You can use this same applet to uninstall the NI-CAN software
at a later time. Refer to Appendix A, Uninstalling the Hardware
and Software, for more information.
4. Click on the Install button.
5. When prompted, insert the CD, NI-CAN for Windows NT/9x, and click
on the Next button to proceed.
6. The setup wizard guides you through the necessary steps to install
the NI-CAN software. You may go back and change values where
appropriate by clicking on the Back button. If at any time you want to
exit the setup, click on the Cancel button.
complete.
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Chapter 2
Installation and Configuration
Install the Hardware
This section describes how to install your PXI-8460, PXI-8461 or
PXI-8462 hardware.
Check the Configuration of Your PXI-8460, PXI-8461 or PXI-8462
If you plan to use your CAN board in a system where bus power is
board. See Appendix C, Cabling Requirements for PXI-8461 High-Speed
CAN for more information.
power supply jumpers or termination resistors. See Appendix B, Cabling
Requirements for PXI-8460 Low-Speed CAN, for more information.
If you are installing a dual-speed CAN board, you might have to change the
power supply jumpers or termination resistors. See Appendix D, Cabling
Requirements for PXI-8462 Dual-Speed CAN, for more information.
Install Your PXI-8460, PXI-8461 or PXI-8462
Caution Before you remove the board from the package, touch the antistatic package to a
metal part of your system chassis to discharge electrostatic energy, which can damage
several components on your board.
1. Make sure that your PXI or CompactPCI chassis is turned off. Keep the
PXI or CompactPCI chassis plugged in so that it remains grounded
while you install the PXI board.
2. Choose an unused PXI or CompactPCI 5 V peripheral slot.
4. Touch a metal part on your chassis to discharge any static electricity
that might be on your clothes or body.
5. Regarding the RTSI interface on the J2 connector of your PXI-846x
series board, there are important issues to consider when using it in a
CompactPCI chassis. Please refer to Appendix E, RTSI Bus, for
detailed information about the PXI-846x series RTSI interface.
6. Insert the PXI board into the selected 5 V slot. Use the injector/ejector
handle to fully inject the device into place. Figure 2-2 shows how to
install the PXI board into a PXI or CompactPCI chassis.
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Chapter 2
Installation and Configuration
3
ON
STANDBY
1
2
4
5
6
7
8
2
1
4
1
2
Injector/Ejector Handle (In Down Position)
PXI Board
3
4
PXI Chassis
Injector/Ejector Rail
Figure 2-2. Installing the PXI Hardware
7. Screw the front panel of the PXI board to the front panel mounting rail
of the PXI or CompactPCI chassis.
8. Turn on your PXI or CompactPCI chassis and start Windows NT.
Connect the Cables
After you have installed your board, connect the CAN cables to your PXI
board. Because exact cabling requirements vary for each application,
National Instruments does not provide cables. Refer to Appendix B,
Cabling Requirements for PXI-8460 Low-Speed CAN, Appendix C,
Cabling Requirements for PXI-8461 High-Speed CAN, or Appendix D,
Cabling Requirements for PXI-8462 Dual-Speed CAN for information
about the cabling requirements of the CAN hardware.
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Chapter 2
Installation and Configuration
Configure the NI-CAN Software
The NI-CAN Configuration utility is located in the Windows NT Control
Panel. You can use it to examine or modify the configuration of the
NI-CAN software. The context-sensitive online help, available by
right-clicking on any of the controls on the configuration utility buttons,
includes all the information you need to configure the NI-CAN software.
To use the NI-CAN Configuration utility, you must first log in as
Administrator or as a user with Administrator privileges. To configure
the NI-CAN software, double-click on the NI-CAN Configuration icon in
the Control Panel:
•
Windows NT 4.0 or later—Select Start»Settings»Control Panel.
Figure 2-3 shows a CAN interface that is working properly. If no interfaces
are listed under NI-CAN Configuration, refer to the Missing Board in the
NI-CAN Configuration Utility section in Appendix F, Troubleshooting and
Common Questions, to resolve the problem.
Figure 2-3. PXI-8461 That Is Working Properly
To select a particular interface, click on that interface in the list.
When you install a PXI-8460, PXI-8461, or PXI-8462, your computer
automatically assigns valid resources to it. Because this resource
assignment is automatic, you do not need to use the Resources dialog
box for the PXI hardware, nor do you need to restart Windows NT.
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Chapter 2
Installation and Configuration
To view information about the NI-CAN software configuration for the
PXI-8460, PXI-8461, or PXI-8462, click on the Settings button. Figure 2-4
shows the Settings dialog box.
Figure 2-4. NI-CAN Hardware Settings Dialog Box
Each port of the PXI-8460, PXI-8461 or PXI-8462 is configured from this
tab. Use the drop-down box nearest the top of the tab to select the physical
port number to configure. For each port, use the Name drop-down box to
select the name for the CAN Network Interface Object (CAN0, CAN1, and
so on). You use this name to refer to the physical port from within your
NI-CAN application.
Help button. You can also right-click on a specific control and select
What’s This? from the pop-up menu to see context-sensitive help for the
item you have clicked on.
When you have finished configuring the NI-CAN software, proceed to
Chapter 3, Verify the Installation.
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3
Verify the Installation
This chapter describes how to verify the hardware and software
installation.
You can use the NI-CAN Diagnostic utility, installed with your NI-CAN
software, to test the hardware and software installation. The utility verifies
that your hardware and software are functioning properly and that the
configuration of your hardware does not conflict with anything else in your
system.
To run the utility, select the NI-CAN Diagnostic item:
•
Windows NT 3.51—Double-click on the NI-CAN Diagnostic icon
in the NI-CAN Software group of the Program Manager.
•
Windows NT 4.0 or later—Select Start»Programs»National
Instruments»NI-CAN»NI-CAN Diagnostic.
interfaces by clicking on the Test All button. You can also test one CAN
interface by highlighting it and clicking on the Test One button. If the
NI-CAN Diagnostic is successful, it puts a checkmark next to the interface
and changes its status from Untested to Passed. If the NI-CAN Diagnostic
fails, it puts an X next to the interface, and changes its status from Untested
to Failed. Figure 3-1 shows the NI-CAN Diagnostic utility after it has
tested some CAN interfaces.
Figure 3-1. NI-CAN Diagnostic Utility after Testing
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Chapter 3
Verify the Installation
You can get details about any tested CAN interface by selecting the
interface and clicking on the Details button. For each failed CAN interface,
select it and click on the Details button to get a description of the failure.
Use that information and the information in Appendix F, Troubleshooting
and Common Questions, to troubleshoot the problem. Troubleshooting
information is also available in the online help for the NI-CAN Diagnostic
utility, which you can access by clicking on the Help button.
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4
Begin to Use the
NI-CAN Software
This chapter helps you get started with the NI-CAN software for
Windows NT.
Using the NI-CAN Software
The functions provided by the NI-CAN software are similar to those
provided by many other device drivers. For example, NI-CAN has open,
close, read, and write functions. NI-CAN provides two different levels of
access to a CAN network: the CAN Network Interface Object and CAN
Objects. Both forms of access support timestamping of incoming data and
various forms of queuing.
The CAN Network Interface Object provides low-level access to a CAN
network. Each CAN Network Interface Object maps to a specific CAN
port, with no limitation on the maximum number of ports or boards you can
use (for example, two PXI-8461 two-port interfaces would provide CAN0
through CAN3). You can use this object to transmit and receive entire CAN
frames. For example, to transmit a CAN frame, you would specify the
outgoing arbitration ID, frame type (data or remote), data length, and data.
The CAN Objects provide higher level access to a CAN network. Each
CAN Object maps to a specific data item (arbitration ID), and you can use
multiple CAN Objects for a given port. When configuring a CAN Object
for use, you specify the arbitration ID, direction of data transfer, data
length, and how you want the data to be accessed (such as periodically).
For example, you could configure a CAN Object to transmit an outgoing
data frame for a specific arbitration ID every 100 ms. After opening this
CAN Object, you use the write function to provide data to transmit, and the
NI-CAN embedded firmware handles all periodic timing.
For detailed information about the NI-CAN software and functions, refer
Manual.
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Chapter 4
Begin to Use the NI-CAN Software
General Programming Considerations
As you begin developing your Win32 NI-CAN application, remember the
following points:
•
•
•
For your LabVIEW or BridgeVIEW application, you must use the
NI-CAN LabVIEW functions in nican.llb.
For your C/C++ application, you must include the NI-CAN header file,
nican.h, in your source code.
The NI-CAN software is accessed through the 32-bit DLL,
nican.dll, either by linking with one of the language interfaces
provided with the NI-CAN software, or by using direct DLL entry
from other programming environments.
•
Several sample CAN applications are included with the NI-CAN
software. Use these as a guide for your own application development.
For information about developing your application, refer to the NI-CAN
User Manual. For detailed information about NI-CAN functions and
objects, refer to the NI-CAN Programmer Reference Manual.
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A
Uninstalling the Hardware
and Software
This appendix describes how to uninstall the PXI-8461 or PXI-8460
hardware and the NI-CAN software from Windows NT.
Uninstalling the Hardware from Windows NT
Because Windows NT 3.51 and 4.0 do not maintain hardware information
for the board, you just need to physically remove your PXI hardware from
your computer. To do so, shut down Windows NT, power off your PXI or
CompactPCI chassis, remove any cables attached to your board, and
physically remove the board.
Uninstalling the NI-CAN Software from Windows NT
Note The following instructions apply to Windows NT 4.0 only. If you are using Windows
NT 3.51, refer to the readme.txt file in your NI-CAN directory for information on how
to uninstall the NI-CAN software.
Before uninstalling the NI-CAN software, you should remove all
PXI-8460, PXI-8461, or PXI-8462 boards from your computer, as
explained in the previous section.
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Appendix A
Uninstalling the Hardware and Software
Complete the following steps to remove the NI-CAN software from
Windows NT 4.0:
1. Select the Add/Remove Programs icon under Start»Settings»
Control Panel. A dialog box similar to the one in Figure A-1 appears.
This dialog box lists the software available for removal.
Figure A-1. Add/Remove Programs Properties Dialog Box
2. Select the NI-CAN software you want to remove and click on the
Add/Remove button. The uninstall program runs and removes all
folders, utilities, device drivers, DLLs, and registry entries associated
with the NI-CAN software.
The uninstall program removes only items that the installation program
installed. If you add anything to a directory that was created by the
installation program, the uninstall program does not delete that directory
because the directory is not empty after the uninstallation. You need to
remove any remaining components yourself.
If you want to reinstall the hardware and software, refer to Chapter 2,
Installation and Configuration.
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B
Cabling Requirements for
PXI-8460 Low-Speed CAN
This appendix describes the cabling requirements for the PXI-8460
hardware.
Cables should be constructed to meet these requirements, as well as the
requirements of the other CAN devices in the network.
Connector Pinouts
The PXI-8460 has DB-9 D-Sub connector(s). The 9-pin D-Sub follows the
pinout recommended by CiA DS 102. Figure B-1 shows the pinout for this
connector.
No Connection
Optional Ground (V–)
CAN_L
CAN_H
V–
No Connection
No Connection
V+
Shield
Figure B-1. Pinout for 9-Pin D-Sub Connector
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Appendix B
Cabling Requirements for PXI-8460 Low-Speed CAN
CAN_H and CAN_L are signal lines that carry the data on the CAN
network. These signals should be connected using twisted-pair cable.
The V+ and V– pins are used to supply bus power to the CAN physical
layer if external power is required for the CAN physical layer. If internal
power for the CAN physical layer is used, the V– pin serves as the reference
ground for CAN_H and CAN_L. See the next section, Power Supply
Information for the Low-Speed CAN Ports, for more information.
Power Supply Information for the Low-Speed CAN Ports
For port one of the PXI-8460, power is configured with jumper J5. For port
two of the PXI-8460, power is configured with jumper J6. These jumpers
are shown in Figure B-2.
3
4
2
1
6
5
1
2
Power Supply Jumper J6
Power Supply Jumper J5
3
4
Assembly Number
Product Name
5
6
Serial Number
Termination Resistor Sockets
Figure B-2. PXI-8460 Parts Locator Diagram
Connecting pins 1 and 2 of a jumper configures the CAN physical layer to
be powered externally (from the bus cable power). In this configuration, the
power must be supplied on the V+ and V– pins on the port connector.
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Appendix B
Cabling Requirements for PXI-8460 Low-Speed CAN
Connecting pins 2 and 3 of a jumper configures the CAN physical layer to
serves as the reference ground for the isolated signals. Even if the CAN
physical layer is powered internally, the fault-tolerant CAN transceiver still
requires bus power to be supplied in order for it to monitor the power supply
(battery) voltage.
Figure B-3 shows how to configure your jumpers for internal or external
power supplies.
INT
3
EXT
1
INT
3
EXT
1
2
2
a. Internal Power Mode
b. External Power Mode
Figure B-3. Power Source Jumpers
The CAN physical layer is still isolated regardless of the power source
chosen.
Bus Power Supply Requirements
If the CAN physical layer is powered from a bus power supply, the power
supply should be a DC power supply with an output of 8 V to 27 V. The
power requirements for the CAN ports for Bus-Powered configurations are
shown in Table B-1. You should take these requirements into account when
determining requirements of the bus power supply for the system.
Table B-1. Power Requirements for the Low-Speed CAN Physical Layer
for Bus-Powered Versions
Characteristic
Voltage requirement
Current requirement
Specification
V+ 8–27 VDC
40 mA typical
100 mA maximum
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Appendix B
Cabling Requirements for PXI-8460 Low-Speed CAN
Cable Specifications
Cables should meet the physical medium requirements specified in
ISO 11519-2, shown in Table B-2.
Belden cable (3084A) meets all of those requirements, and should be
suitable for most applications.
Table B-2. ISO 11519-2 Specifications for Characteristics of a CAN_H
and CAN_L Pair of Wires
Characteristic
Length-related resistance
Value
90 mΩ/m nominal
Length-related capacitance: CAN_L and ground, 30 pF/m nominal
CAN_H and ground, CAN_L and CAN_H
Number of Devices
The maximum number of devices depends on the electrical characteristics
of the devices on the network. If all of the devices meet the requirements
of ISO 11519-2, at least 20 devices may be connected to the bus. Higher
numbers of devices may be connected if the electrical characteristics of
the devices do not degrade signal quality below ISO 11519-2 signal level
specifications.
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Appendix B
Cabling Requirements for PXI-8460 Low-Speed CAN
Low-Speed Termination
Every device on the low-speed CAN network requires a termination
resistor for each CAN data line: RRTH for CAN_H and RRTL for CAN_L.
Figure B-4 shows termination resistor placement in a low-speed CAN
network.
Low-speed
Low-speed
Low-speed
CAN Device
CAN Device
CAN Device
RTL CAN_L
RTH CAN_H
RTL CAN_L
RTH CAN_H
RTL CAN_L
RTH CAN_H
CAN_H
CAN_L
Figure B-4. Termination Resistor Placement for Low-Speed CAN
The following sections explain how to determine the correct resistor values
for your PXI-8460, and how to replace those resistors, if necessary.
Determining the Necessary Termination Resistance for Your Board
Unlike high-speed CAN, low-speed CAN requires termination at the
low-speed CAN transceiver instead of on the cable. The termination
requires one resistor for each CAN line. This configuration allows the
Philips fault-tolerant CAN transceiver to detect any of seven network faults.
You can use your PXI-8460 to connect to a low-speed CAN network having
from two to 32 nodes as specified by Philips (including the port on the
PXI-8460 as a node). You can also use the PXI-8460 to communicate with
individual low-speed CAN devices. It is important to determine the overall
termination of your existing network, or the termination of your individual
device, before connecting it to a PXI-8460 port. Philips recommends an
overall RTH and RTL termination of 100 to 500 Ω (each) for a properly
terminated low-speed network. The overall network termination may be
determined as follows:
1
1
1
1
1
------------------------- = ------------------------ + ------------------------ + ------------------------ + -------------------------
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Appendix B
Cabling Requirements for PXI-8460 Low-Speed CAN
Philips also recommends an individual device RTH and RTL termination of
500 Ω to 16 kΩ. The PXI-8460 board ships with mounted RTH and RTL
values of 510 Ω 5% per port. The PXI-8460 kit also includes a pair of
15 kΩ 5% resistors for each port. After determining the termination of
your existing network or device, you can use the following formula to
indicate which value should be placed on your PXI-8460 board in order to
produce the proper overall RTH and RTL termination of 100 to 500 Ω upon
connection of the board:
1
RRTH overall*† = -------------------------------------------------------------------------------------------------------------------------------------------
1
1
---------------------------------------------------------------- + -------------------------------------------------------------
RRTH of low-speed CAN interface** RRTH of existing network or device
*RRTH overall should be between 100 and 500 Ω
**RRTH of low-speed CAN interface= 510 Ω 5% (mounted) or 15 kΩ 5% (in kit)
†RRTH = RRTL
As the formula indicates, the 510 Ω 5% shipped on your board will work
with properly terminated networks having a total RTH and RTL termination
of 125 to 500 Ω, or individual devices having an RTH and RTL termination
of 500 Ω to 16 kΩ. For communication with a network having an overall
RTH and RTL termination of 100 to 125 Ω, you will need to replace the
510 Ω resistors with the 15 kΩ resistors in the kit. Please refer to the next
section, Replacing the Termination Resistors.
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Replacing the Termination Resistors
Follow these steps to replace the termination resistors, after you have
determined the correct value in the previous section, Determining the
Necessary Termination Resistance for Your Board.
1. Remove the termination resistors on your PXI-8460. Figure B-5 shows
the location of the termination resistor sockets on a PXI-8460.
1
2
1
Port 1 Termination Resistors
2
Port 2 Termination Resistors
Figure B-5. Location of Termination Resistors on a PXI-8460
2. Cut and bend the lead wires of the resistors you want to install. Refer
to Figure B-6.
0.5 in
(13 mm)
0.165 in
(4 mm)
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Appendix B
Cabling Requirements for PXI-8460 Low-Speed CAN
3. Insert the replacement resistors into the empty sockets.
Configuration, to complete the hardware installation.
Cabling Example
Figure B-7 shows an example of a cable to connect two low-speed CAN
devices. For the internal power configuration, the V+ connection is
required for the low-speed transceiver to operate as specified in the Philips
data sheet.
5-Pin
Combicon
9-Pin
D-Sub
9-Pin
D-Sub
5-Pin
Combicon
CAN_H
CAN_L
GND
V+
Pin 4
Pin 2
Pin 3
Pin 5
Pin 1
Pin 7
Pin 2
Pin 5
Pin 9
Pin 3
Pin 7
Pin 2
Pin 5
Pin 9
Pin 3
Pin 4
Pin 2
Pin 3
Pin 5
Pin 1
V–
Power
Connector
V+
V–
Figure B-7. Cabling Example
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C
Cabling Requirements for
PXI-8461 High-Speed CAN
This appendix describes the cabling requirements for the PXI-8461
hardware.
Cables should be constructed to meet these requirements and the
requirements of the other CAN or DeviceNet devices in the network.
Connector Pinouts
Depending on the type of PXI board you are installing, it either has DB-9
D-Sub connector(s) or Combicon-style pluggable screw terminal
connector(s).
The 9-pin D-Sub follows the pinout recommended by CiA Draft
Standard 102. Figure C-1 shows the pinout for this connector.
No Connection
Optional Ground (V–)
CAN_L
CAN_H
V–
No Connection
No Connection
V+
Shield
Figure C-1. Pinout for 9-Pin D-Sub Connector
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Appendix C
Cabling Requirements for PXI-8461 High-Speed CAN
The 5-pin Combicon-style pluggable screw terminal follows the pinout
required by the DeviceNet Specification. Figure C-2 shows the pinout for
this connector.
1
2
3
4
5
Figure C-2. Pinout for 5-Pin Combicon-Style Pluggable Screw Terminal
CAN_H and CAN_L are signal lines that carry the data on the CAN
network. These signals should be connected using twisted-pair cable.
The V+ and V– pins are used to supply bus power to the CAN physical
layer if external power is required for the CAN physical layer. If internal
power for the CAN physical layer is used, the V– pin serves as the reference
ground for CAN_H and CAN_L. See the next section, Power Supply
Information for the High-Speed CAN Ports, for more information.
For the PXI-8461, a jumper controls the source of power for the CAN
physical layer. For the one-port boards and port one of the two-port boards,
power is configured with jumper J5. For port two of the two-port boards,
power is configured with jumper J6. The location of these jumpers is shown
in Figure C-3.
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Appendix C
Cabling Requirements for PXI-8461 High-Speed CAN
3
4
2
1
5
1
2
Power Supply Jumper J6
Power Supply Jumper J5
3
4
Assembly Number
Product Name
5
Serial Number
Figure C-3. PXI-8461 Part Locator Diagram
Connecting pins 1 and 2 of a jumper configures the CAN physical layer to
be powered externally (from the bus cable power). In this configuration, the
power must be supplied on the V+ and V– pins on the port connector.
Connecting pins 2 and 3 of a jumper configures the CAN physical layer to
be powered internally (from the board). In this configuration, the V– signal
serves as the reference ground for the isolated signals.
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Appendix C
Cabling Requirements for PXI-8461 High-Speed CAN
Figure C-4 shows how to configure your jumpers for internal or external
power supplies.
INT
3
EXT
INT
3
EXT
1
2
1
2
a. Internal Power Mode
b. External Power Mode
Figure C-4. Power Source Jumpers
The CAN physical layer is still isolated regardless of the power source
chosen.
Bus Power Supply Requirements
If the CAN physical layer is powered from a bus power supply, the power
supply should be a DC power supply with an output of 10 V to 30 V. The
power requirements for the CAN ports for bus-powered configurations are
shown in Table C-1. You should take these requirements into account when
determining requirements of the bus power supply for the system.
Table C-1. Power Requirements for the CAN Physical Layer
for Bus-Powered Versions
Characteristic
Voltage requirement
Current requirement
Specification
V+ 10–30 VDC
40 mA typical
100 mA maximum
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Cable Specifications
Cables should meet the physical medium requirements specified in
ISO 11898, shown in Table C-2.
Belden cable (3084A) meets all of those requirements and should be
suitable for most applications.
Table C-2. ISO 11898 Specifications for Characteristics of a CAN_H
and CAN_L Pair of Wires
Characteristic
Impedance
Value
108 Ω minimum, 120 Ω nominal,
132 Ω maximum
Length-related resistance
Specific line delay
70 mΩ/m nominal
5 ns/m nominal
Cable Lengths
The allowable cable length is affected by the characteristics of the cabling
and the desired bit transmission rates. Detailed cable length requirements
can be found in ISO 11898, CiA Draft Standard 102, and the DeviceNet
Specification.
ISO 11898 specifies 40 m total cable length with a maximum stub length
of 0.3 m for a bit rate of 1 Mb/s. The ISO 11898 specification says that
significantly longer cable lengths may be allowed at lower bit rates, but
each node should be analyzed for signal integrity problems.
Table C-3 lists the DeviceNet cable length specifications.
Table C-3. DeviceNet Cable Length Specifications
Drop Length
Maximum
Drop Length
Cumulative
Baud Rate
500 kb/s
Trunk Length
100 m (328 ft)
250 m (820 ft)
500 m (1640 ft)
6 m (20 ft)
6 m (20 ft)
6 m (20 ft)
39 m (128 ft)
78 m (256 ft)
250 kb/s
125 kb/s
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Appendix C
Cabling Requirements for PXI-8461 High-Speed CAN
Number of Devices
The maximum number of devices that you can connect to a CAN port
depends on the electrical characteristics of the devices on the network. If all
of the devices meet the requirements of ISO 11898, at least 30 devices may
be connected to the bus. Higher numbers of devices may be connected if the
electrical characteristics of the devices do not degrade signal quality below
ISO 11898 signal level specifications. If all of the devices on the network
meet the DeviceNet specifications, 64 devices may be connected to the
network.
Cable Termination
The pair of signal wires (CAN_H and CAN_L) constitutes a transmission
line. If the transmission line is not terminated, each signal change on the
line causes reflections that may cause communication failures.
Because communication flows both ways on the CAN bus, CAN requires
that both ends of the cable be terminated. However, this requirement does
not mean that every device should have a termination resistor. If multiple
devices are placed along the cable, only the devices on the ends of the cable
should have termination resistors. See Figure C-5 for an example of where
termination resistors should be placed in a system with more than two
devices.
CAN
CAN
CAN
Device
Device
Device
CAN_H
CAN_L
CAN
Device
Figure C-5. Termination Resistor Placement
The termination resistors on a cable should match the nominal impedance
of the cable. ISO 11898 requires a cable with a nominal impedance of
120 Ω; therefore, a 120 Ω resistor should be used at each end of the cable.
Each termination resistor should be capable of dissipating at least 0.25 W
of power.
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Appendix C
Cabling Requirements for PXI-8461 High-Speed CAN
Cabling Example
Figure C-6 shows an example of a cable to connect two CAN devices. For
the internal power configuration, no V+ connection is required.
5-Pin
Combicon
9-Pin
D-Sub
9-Pin
D-Sub Combicon
5-Pin
CAN_H
CAN_L
Shield
V+
Pin 4
Pin 2
Pin 3
Pin 5
Pin 1
Pin 7
Pin 2
Pin 5
Pin 9
Pin 3
Pin 7
Pin 2
Pin 5
Pin 9
Pin 3
Pin 4
Pin 2
Pin 3
Pin 5
Pin 1
120 Ω
120 Ω
V–
Power
Connector
V+
V–
Figure C-6. Cabling Example
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D
Cabling Requirements for
PXI-8462 Dual-Speed CAN
The appendix describes the cabling requirements for the PXI-8462
hardware.
Port Identification
The PXI-8462 board provides a high-speed CAN port (port one), and a
low-speed CAN port (port two). Port one of the PXI-8462 is identical to
of the PXI-8462 is identical to port two of the PXI-8460 two port board.
and low-speed bus, each with its own specific cabling and termination
requirements. For cabling requirements and port information for the
high-speed CAN port, please refer to Appendix C, Cabling Requirements
for PXI-8461 High-Speed CAN. For cabling requirements and port
information for the low-speed CAN port, please refer to Appendix B,
Cabling Requirements for PXI-8460 Low-Speed CAN.
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E
RTSI Bus
This appendix describes the RTSI interface on your PXI-846x series board.
RTSI, PXI and CompactPCI
Using PXI-compatible products with standard CompactPCI products is
an important feature provided by the PXI Specification, Revision 1.0.
If you use a PXI-compatible plug-in device in a standard CompactPCI
chassis, you will be unable to use PXI-specific functions, but you can
still use the basic plug-in device functions. For example, the RTSI bus
on your PXI-846x series board is available in a PXI chassis, but not in
a CompactPCI chassis. The CompactPCI specification permits vendors
to develop sub-buses that coexist with the basic PCI interface on the
CompactPCI bus. Compatible operation is not guaranteed between
devices with sub-buses and PXI. The standard implementation for
CompactPCI does not include these sub-buses. Your PXI-846x device
will work in any standard CompactPCI chassis adhering to the PICMG 2.0
R2.1 CompactPCI core specification using the 64-bit definition for J2. PXI
specific features are implemented on the J2 connector of the CompactPCI
bus. Table E-1 lists the J2 pins your PXI-846x series board uses. Your PXI
board is compatible with any CompactPCI chassis with a sub-bus that does
not drive these lines. Even if the sub-bus is capable of driving these lines,
the board is still compatible as long as those pins on the sub-bus are
disabled by default and not ever enabled. Damage may result if these
lines are driven by the sub-bus.
The PXI-8461 one port and two port boards allow for the connection of four
RTSI input signals and four RTSI output signals. In order to fully support
the fault reporting capabilities of the low-speed transceivers used on the
PXI-8460 one port, PXI-8460 two port, and PXI-8462, three RTSI lines on
those boards are reserved for low-speed CAN fault reporting. This allows
for the connection of three RTSI input signals and two RTSI output signals
to the boards, providing them the real time synchronization benefits of
RTSI without sacrificing low-speed CAN fault reporting.
© National Instruments Corporation
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Appendix E
RTSI Bus
Table E-1. Pins Used By the PXI-846x Series Boards
PXI Pin Name
PXI J2 Pin Number
PXI Star
D17
B16
A16
A17
A18
B18
C18
E16
PXI Trigger <0>
PXI Trigger <1>
PXI Trigger <2>
PXI Trigger <3>
PXI Trigger <4>
PXI Trigger <5>
PXI Trigger <7>
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F
Troubleshooting and
Common Questions
This appendix describes how to troubleshoot problems and answers some
common questions.
Missing Board in the NI-CAN Configuration Utility
The NI-CAN Configuration utility contains configuration information for
all of the CAN hardware it is aware of that is installed in your system. To
start the NI-CAN Configuration utility, double-click on the NI-CAN
Configuration icon in the Control Panel:
•
Windows NT 3.51—Open the Control Panel in the Main group of
the Program Manager.
•
Windows NT 4.0 or later—Select Start»Settings»Control Panel.
If your board is not listed under NI-CAN Configuration, the board is not
properly installed. For the PXI-8460, PXI-8461, and PXI-8462, this means
that the board is not physically present in the system. If your board is firmly
plugged into its slot and the problem persists, contact National Instruments.
Diagnostic Utility Failures
The following sections explain common error messages generated by the
NI-CAN Diagnostic utility.
Resource Errors
This error occurs if the memory resource or interrupt resource assigned
to a board conflicts with the resources being used by other hardware in
the system. If a resource error occurs, click on the Resources button in
the NI-CAN Configuration utility to view the board resources. For the
PXI-8460, PXI-8461, and PXI-8462, if legacy hardware in your system
is using the resources, change the resource configuration of the legacy
hardware. If you need help, refer to the documentation that came with
your hardware. If the problem persists, contact National Instruments.
© National Instruments Corporation
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Appendix F
Troubleshooting and Common Questions
NI-CAN Software Problem Encountered
This error occurs if the NI-CAN Diagnostic utility detects that it is unable
to communicate correctly with the hardware using the installed NI-CAN
software. If you get this error, shut down your computer, restart it, and run
the NI-CAN Diagnostic utility again. If the problem persists, try
reinstalling the NI-CAN software for Windows NT.
Missing Board in Diagnostic Utility
If your board is physically installed in your system, but is not listed in the
NI-CAN Diagnostic utility, check to see if the NI-CAN Configuration
utility has detected the board. For more information, refer to the Missing
Board in the NI-CAN Configuration Utility section earlier in this appendix.
Hardware Problem Encountered
This error occurs if the NI-CAN Diagnostic utility detects a defect in the
hardware. If you get this error, write down the numeric code shown with the
error and contact National Instruments. Depending on the cause of the
hardware failure, you may need to repair or replace your board.
Common Questions
How can I determine which type of CAN hardware I have installed?
Run the NI-CAN Configuration utility. To run the utility, select
Start»Settings»Control Panel»NI-CAN Configuration. If any hardware
is correctly installed, it is listed under National Instruments CAN
Interfaces.
How can I determine which version of the NI-CAN software I have
installed?
Run the NI-CAN Diagnostic utility. To run the utility, select the NI-CAN
Diagnostic item under Start»Programs»National Instruments CAN.
The NI-CAN Diagnostic utility displays information about the version of
the NI-CAN software currently installed.
How many PXI-8460, PXI-8461, and PXI-8462 boards can I configure
for use with my NI-CAN software?
The NI-CAN software for Windows NT can be configured to communicate
with up to 10 boards.
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How do I connect a CAN cable to my CAN port?
You will need to use an appropriate cable. For information about
cabling requirements for National Instruments CAN hardware, refer
to Appendix B, Cabling Requirements for PXI-8460 Low-Speed CAN or
Appendix C, Cabling Requirements for PXI-8461 High-Speed CAN.
Are interrupts required for the PXI-8460, PXI-8461, and PXI-8462?
Yes, one interrupt per board is required.
What do I do if the NI-CAN Diagnostic utility fails with an error?
Refer to the Diagnostic Utility Failures section in this appendix for specific
information about what might cause the NI-CAN Diagnostic utility to fail.
If you have already completed the troubleshooting steps, contact National
Instruments.
How do I use an NI-CAN language interface?
For information about using NI-CAN language interfaces, refer to
Chapter 3, Developing Your Application, in the NI-CAN User Manual.
How do I use NI-CAN from within LabVIEW or BridgeVIEW?
For information about using NI-CAN from within LabVIEW or
BridgeVIEW, refer to Chapter 3, Developing Your Application, in the
NI-CAN User Manual.
Why does the uninstall program leave some components installed?
The uninstall program removes only items that the installation program
installed. If you add anything to a directory that was created by the
installation program, the uninstall program does not delete that directory
because the directory is not empty after the uninstallation. You must
remove any remaining components yourself.
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G
Specifications
This appendix describes the physical characteristics of the hardware and
the recommended operating conditions.
PXI-8460 One Port and Two Port
Dimensions............................................. PXI 3U Module
100 by 160 mm
(3.94 by 6.30 in.)
Power requirement ................................. +5 VDC 500 mA typical
I/O connector.......................................... 9-pin D-Sub for each port
Operating environment
Component temperature.................. 0 to 55 °C
Relative humidity............................ 10% to 90%, noncondensing
Storage environment
Temperature.................................... –20 to 70 °C
Relative humidity............................ 10% to 90%, noncondensing
PXI-8461 One Port and Two Port
Dimensions............................................. PXI 3U Module
100 by 160 mm
(3.94 by 6.30 in.)
Power requirement ................................. +5 VDC 500 mA typical
I/O connector.......................................... 9-pin D-Sub for each port
(standard)
or
5-pin Combicon-style pluggable
DeviceNet screw terminal
© National Instruments Corporation
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Appendix G
Specifications
Operating environment
Component temperature ..................0 to 55 °C
Relative humidity ............................10% to 90%, noncondensing
Storage environment
Temperature.....................................–20 to 70 °C
Relative humidity ............................10% to 90%, noncondensing
PXI-8462 Two Port
Dimensions .............................................PXI 3U Module
100 by 160 mm
(3.94 by 6.30 in.)
Power requirement..................................+5 VDC 500 mA typical
I/O connector ..........................................9-pin D-Sub for each port
Operating environment
Component temperature ..................0 to 55 °C
Relative humidity ............................10% to 90%, noncondensing
Storage environment
Temperature.....................................–20 to 70 °C
Relative humidity ............................10% to 90%, noncondensing
High-Speed CAN Port Characteristics
Bus Power...............................................0–30 V, 40 mA typical
100mA maximum
CAN-H, CAN-L .....................................–8 to +18V, DC or peak, CATI
Low-Speed CAN Port Characteristics
Bus Power...............................................8–27 V, 40 mA typical
100 mA maximum
CAN-H, CAN-L .....................................–10 to +27V, DC or peak, CATI
PXI-846x and NI-CAN for Windows NT
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H
Technical Support Resources
Web Support
National Instruments Web support is your first stop for help in solving
installation, configuration, and application problems and questions. Online
problem-solving and diagnostic resources include frequently asked
questions, knowledge bases, product-specific troubleshooting wizards,
manuals, drivers, software updates, and more. Web support is available
through the Technical Support section of ni.com
NI Developer Zone
The NI Developer Zone at ni.com/zone is the essential resource for
building measurement and automation systems. At the NI Developer Zone,
you can easily access the latest example programs, system configurators,
tutorials, technical news, as well as a community of developers ready to
share their own techniques.
Customer Education
National Instruments provides a number of alternatives to satisfy your
training needs, from self-paced tutorials, videos, and interactive CDs to
instructor-led hands-on courses at locations around the world. Visit the
Customer Education section of ni.com for online course schedules,
syllabi, training centers, and class registration.
System Integration
If you have time constraints, limited in-house technical resources, or other
dilemmas, you may prefer to employ consulting or system integration
services. You can rely on the expertise available through our worldwide
network of Alliance Program members. To find out more about our
Alliance system integration solutions, visit the System Integration section
of ni.com
© National Instruments Corporation
H-1
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Appendix H
Technical Support Resources
Worldwide Support
National Instruments has offices located around the world to help address
your support needs. You can access our branch office Web sites from the
Worldwide Offices section of ni.com. Branch office Web sites provide
up-to-date contact information, support phone numbers, e-mail addresses,
and current events.
If you have searched the technical support resources on our Web site and
still cannot find the answers you need, contact your local office or National
Instruments corporate. Phone numbers for our worldwide offices are listed
at the front of this manual.
PXI-846x and NI-CAN for Windows NT
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Glossary
Prefix
n-
Meaning
nano-
Value
10–9
10–3
103
m-
milli-
k-
kilo-
M-
mega-
106
°
degrees
ohms
Ω
%
percent
amperes
A
ANSI
b
American National Standards Institute
bits
B
bytes
C
Celsius
CAN
CiA
DC
DLL
FCC
ft
Controller Area Network
CAN in Automation
direct current
dynamic link library
Federal Communications Commission
feet
HMI
Hz
Human Machine Interface
hertz
IEEE
in.
Institute of Electrical and Electronic Engineers
inches
IRQ
interrupt request
© National Instruments Corporation
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Glossary
ISO
International Standards Organization
light-emitting diode
LED
m
meters
PC
personal computer
PCI
peripheral component interconnect
Personal Computer Memory Card International Association
Programmable Logic Controller
random-access memory
PCMCIA
PLC
RAM
resource
hardware settings used by National Instruments CAN hardware, including
an interrupt request level (IRQ) and an 8 KB physical memory range (such
as D0000 to D1FFF hex)
RTSI bus
Real-Time System Integration Bus. The National Instruments timing bus
that connects CAN and DAQ boards directly, by means of the PXI trigger
bus on the PXI-846x series boards, for precise synchronization of
functions.
s
seconds
trigger
V
Any event that causes or starts some form of data capture.
volts
VDC
VXI
W
volts direct current
VME eXtensions for Instrumentation
watts
PXI-846x and NI-CAN for Windows NT
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Index
configuration, 2-1
Numerics
Add/Remove Programs Properties Dialog
PXI-8462, 2-3
9-Pin D-Sub connector
high-speed CAN (figure), C-1
(figure), 2-5
connector pinouts
B
BridgeVIEW, 1-3, 4-2, F-3
bus power supply requirements
high-speed CAN (table), C-4
low-speed CAN (table), B-3
dual-speed CAN, D-1
high-speed CAN, C-1
pinout for 9-Pin D-Sub connector,
(figure), C-1
low-speed CAN, B-1
pinout for 9-Pin D-Sub connector,
C
cable lengths
customer education, E-1
high-speed CAN (table), C-5
cable specification
high-speed CAN (table), C-5
low-speed CAN (table), B-4
cable termination
high-speed CAN, C-6
cables
determining necessary termination resistance
low-speed CAN, B-5
connecting, 2-4
cabling example, high-speed CAN (figure), C-7
cabling example, low-speed CAN (figure), B-8
cabling requirements
dual-speed CAN, D-1
high-speed CAN, C-1
low-speed CAN, B-1
common questions, F-1, F-2
CompactPCI
error messages, F-1
Missing Board in Diagnostic Utility, F-2
Missing Board in the NI-CAN
Configuration Utility (error message), F-1
NI-CAN Diagnostic utility failures, F-1
NI-CAN Software Problem
and RTSI, E-1
Encountered, F-2
resource errors, F-1
© National Instruments Corporation
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Index
number of devices, B-4
port characteristics for bus-powered
ports, G-2
H
hardware
installing, 2-3
uninstalling from Windows NT, A-1
Hardware Problem Encountered (error
message), F-2
power supply, B-2
preparing lead wires of, (figure), B-7
replacing termination resistors, B-7
termination resistor placement
(figure), B-5
high-speed CAN
bus power supply requirements
(table), C-4
cable lengths (table), C-5
cable specification (table), C-5
cable termination, C-6
termination resistors, location of,
(figure), B-7
cabling example (figure), C-7
cabling requirements, C-1
number of devices, C-6
port characteristics, G-2
power supply, C-2
Measurement Studio, 1-3
Missing Board in Diagnostic Utility (error
message), F-2
termination resistor placement
(figure), C-6
Utility (error message), F-1
I
NI Developer Zone, E-1
NI-CAN Diagnostic utility, 3-1
after testing (figure), 3-1
failures, F-1
installation, 2-1
Add/Remove Programs Properties dialog
box (figure), 2-2
verifying, 3-1
message), F-2
message), F-2
NI-CAN Software Problem Encountered
(error message), F-2
L
LabVIEW, 1-3, 4-2, F-3
LabWindows/CVI, 1-3
low-speed CAN
resource errors, F-1
NI-CAN hardware
bus power supply requirements
(table), B-3
cable specification (table), B-4
cabling example (figure), B-8
cabling requirements, B-1
determining type installed, F-2
installing, 2-3
settings dialog box (figure), 2-6
specifications, G-1
PXI-846x and NI-CAN for Windows NT
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NI-CAN software
and RTSI, E-1
Box, 2-2
configuration, 2-5
description of, 4-1
bus power supply requirements
(table), B-3
determining version of, F-2
installing, 2-1
language interface, using, F-3
overview, 1-2
PXI-8461 that is working properly
(figure), 2-5
cabling example (figure), B-8
cabling requirements, B-1
checking configuration, 2-3
resistance, B-5
uninstall program, F-3
using, 4-1
fault reporting capabilities, E-1
installation, 2-3
See also optional programming tools.
NI-CAN Software Problem Encountered
(error message), F-2
number of devices
interrupts required, F-3
number of boards configured, F-2
number of devices, B-4
parts locator diagram (figure), B-2
physical layer, 1-2
high-speed CAN, C-6
low-speed CAN, B-4
pinout for 9-Pin D-Sub connector
(figure), B-1
port characteristics for bus-powered
ports, G-2
power source jumpers (figure), B-3
power supply, B-2
O
optional programming tools, 1-3
termination resistor placement
(figure), B-5
P
pinout
5-Pin Combicon-style pluggable screw
terminal (figure), C-2
pins used by PXI-846x series boards, E-2
port identification
dual-speed CAN, D-1
power supply
termination resistors
transfer rates, 1-2
high-speed CAN
(table), C-4
ports, C-2
power source jumpers (figure), C-4
low-speed CAN
cable lengths (table), C-5
cable specification (table), C-5
cable termination, C-6
ports, B-2
power source jumpers (figure), B-3
programming
cabling example (figure), C-7
cabling requirements, C-1
checking configuration, 2-3
See optional programming tools.
© National Instruments Corporation
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Index
connectors, 1-2
fault reporting capabilities, E-1
installation, 2-3
Real-Time System Integration (RTSI)
See RTSI.
related documentation, xi, xii, xiii
replacing termination resistors
resource errors, F-1
interrupts required, F-3
number of boards configured, F-2
number of devices, C-6
parts locator diagram (figure), C-3
physical layer, 1-2
RTSI, 1-2
pinout
bus, E-1
pinout for 9-Pin D-Sub connector
(figure), C-1
interface description, E-1
pins used by PXI-846x series boards
(table), E-2
port characteristics, G-2
power source jumpers (figure), C-4
power supply, C-2
(figure), C-6
uninstalling, F-3
Dialog Box (figure), A-2
See also optional programming tools.
software-related resources
BridgeVIEW, 1-3, 4-2, F-3
LabVIEW, 1-3, 4-2, F-3
LabWindows/CVI, 1-3
Measurement Studio, 1-3
system integration, by National
Instruments, E-1
transfer rates, 1-2
PXI-8462
cabling requirements, D-1
checking configuration, 2-3
fault reporting capabilities, E-1
installation, 2-3
interrupts required, F-3
number of boards configured, F-2
physical layer, 1-2
port identification, D-1
port speeds, 1-2
specifications, G-2
PXI-846x series boards
and RTSI interface, E-1
pins used by, E-2
T
technical support resources, E-1
termination resistors
specifications, G-1
location of, low-speed CAN (figure), B-7
placement
high-speed CAN (figure), C-6
low-speed CAN (figure), B-5
preparing lead wires of, low-speed CAN
(figure), B-7
PXI-846x and NI-CAN for Windows NT
Index-4
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troubleshooting, F-1
Hardware Problem Encountered (error
Web support from National Instruments, E-1
what you need to get started, 1-1
Windows NT
Missing Board in the NI-CAN
Configuration Utility (error
NI-CAN Diagnostic utility failures, F-1
NI-CAN Software Problem Encountered
(error message), F-2
installing 3.51, 2-1
installing 4.0, 2-1
uninstalling hardware from, A-1
uninstalling software from, A-1
Add/Remove Programs Properties
Dialog Box (figure), A-2
troublshooting
Missing Board in Diagnostic Utility (error
message), F-2
worldwide technical support, E-2
U
uninstall program, F-3
© National Instruments Corporation
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