National Instruments Computer Hardware PXI 8460 User Manual

CAN  
Getting Started with  
Your PXI-846x Series and  
the NI-CAN Software for  
Windows NT  
PXI-8460, PXI-8461, and PXI-8462  
PXI-846x and NI-CAN for Windows NT  
August 2000 Edition  
Part Number 370294A-01  
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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. CUSTOMERS 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 owners failure to follow the  
National Instruments installation, operation, or maintenance instructions; owners modification of the product; owners abuse, misuse,  
or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties, or other events outside reasonable control.  
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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 RTSIare 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  
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(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  
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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  
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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.  
Consult the FCC web site http://www.fcc.gov for more information.  
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 users 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  
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  
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  
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.  
Use the NI-CAN User Manual to learn the basics of CAN and how to  
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  
CompactPCI Specification. With a PXI-8460, PXI-8461, or PXI-8462  
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  
boards to a common trigger or timing event. The RTSI bus is implemented  
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.  
3. In the Run dialog box, type the following:  
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.  
7. Shut down Windows NT and turn off your computer when the setup is  
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.  
3. Remove the filler panel for the peripheral slot you have chosen.  
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 laterSelect 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.  
To access online help for the NI-CAN Configuration utility, click on the  
Help button. You can also right-click on a specific control and select  
Whats 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 3.51Double-click on the NI-CAN Diagnostic icon  
in the NI-CAN Software group of the Program Manager.  
Windows NT 4.0 or laterSelect Start»Programs»National  
Instruments»NI-CAN»NI-CAN Diagnostic.  
When you have started the NI-CAN Diagnostic utility, test your CAN  
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  
to the NI-CAN User Manual and the NI-CAN Programmer Reference  
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  
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 Vpins 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 Vpin 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 Vpins 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  
be powered internally (from the card). In this configuration, the Vsignal  
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+ 827 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 m/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 (each) for a properly  
terminated low-speed network. The overall network termination may be  
determined as follows:  
1
1
1
1
1
------------------------- = ------------------------ + ------------------------ + ------------------------ + -------------------------  
RRTH overallRRTH node 1 RRTH node 2 RRTH node 3 RRTH node n  
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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 to 16 k. The PXI-8460 board ships with mounted RTH and RTL  
values of 510 5% per port. The PXI-8460 kit also includes a pair of  
15 k5% 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 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 5% (mounted) or 15 k5% (in kit)  
RRTH = RRTL  
As the formula indicates, the 510 5% shipped on your board will work  
with properly terminated networks having a total RTH and RTL termination  
of 125 to 500 , or individual devices having an RTH and RTL termination  
of 500 to 16 k. For communication with a network having an overall  
RTH and RTL termination of 100 to 125 , you will need to replace the  
510 resistors with the 15 kresistors 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)  
Figure B-6. Preparing Lead Wires of Replacement Resistors  
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Appendix B  
Cabling Requirements for PXI-8460 Low-Speed CAN  
3. Insert the replacement resistors into the empty sockets.  
4. Refer to Install the Hardware, in Chapter 2, Installation and  
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 Vpins 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 Vpin 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.  
Power Supply Information for the High-Speed CAN Ports  
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 Vpins 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 Vsignal  
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+ 1030 VDC  
40 mA typical  
100 mA maximum  
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Appendix C  
Cabling Requirements for PXI-8461 High-Speed CAN  
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 minimum, 120 nominal,  
132 maximum  
Length-related resistance  
Specific line delay  
70 m/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 ; therefore, a 120 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.  
PXI-846x and NI-CAN for Windows NT  
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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  
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  
port one of the PXI-8461 one port and PXI-8461 two port boards. Port two  
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  
CompactPCI devices with different sub-buses nor between CompactPCI  
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.  
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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>  
PXI-846x and NI-CAN for Windows NT  
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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 3.51Open the Control Panel in the Main group of  
the Program Manager.  
Windows NT 4.0 or laterSelect 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.  
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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  
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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...............................................030 V, 40 mA typical  
100mA maximum  
CAN-H, CAN-L .....................................8 to +18V, DC or peak, CATI  
Low-Speed CAN Port Characteristics  
Bus Power...............................................827 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  
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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  
H-2  
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Glossary  
Prefix  
n-  
Meaning  
nano-  
Value  
109  
103  
103  
m-  
milli-  
k-  
kilo-  
M-  
mega-  
106  
°
degrees  
ohms  
%
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  
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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  
Glossary-2  
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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  
connector pinouts  
B
BridgeVIEW, 1-3, 4-2, F-3  
bus power supply requirements  
low-speed CAN (table), B-3  
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 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  
port characteristics for bus-powered  
ports, G-2  
H
hardware  
installing, 2-3  
message), F-2  
power supply, B-2  
preparing lead wires of, (figure), B-7  
replacing termination resistors, B-7  
termination resistor placement  
high-speed CAN  
(table), C-4  
cable lengths (table), C-5  
cable specification (table), C-5  
cable termination, C-6  
termination resistors, location of,  
cabling example (figure), C-7  
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  
I
NI Developer Zone, E-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  
(error message), F-2  
L
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  
Index-2  
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Index  
Box, 2-2  
configuration, 2-5  
description of, 4-1  
bus power supply requirements  
(table), B-3  
installing, 2-1  
overview, 1-2  
(figure), 2-5  
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  
number of boards configured, F-2  
physical layer, 1-2  
high-speed CAN, C-6  
low-speed CAN, B-4  
port characteristics for bus-powered  
ports, G-2  
power source jumpers (figure), B-3  
O
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  
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  
resource errors, F-1  
interrupts required, F-3  
number of devices, C-6  
physical layer, 1-2  
RTSI, 1-2  
pinout  
bus, E-1  
pinout for 9-Pin D-Sub connector  
pins used by PXI-846x series boards  
(table), E-2  
power source jumpers (figure), C-4  
(figure), C-6  
uninstalling, F-3  
Dialog Box (figure), A-2  
See also optional programming tools.  
software-related resources  
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  
ni.com  
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Index  
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 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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Miele Washer W 1966 User Manual
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