National Instruments Switch NI 78xxR User Manual

Getting Started with R Series Intelligent DAQ

This document explains how to install and configure National Instruments 78xxR devices.

Figure 1. PCI and PXI R Series Devices

NI 78xxR Required Components

The following items are necessary to set up and use the NI PCI/PXI-78xxR:

❑

The following software packages:

–

LabVIEW 7.1 or later

LabVIEW FPGA Module 1.1 or later

NI-RIO 1.3 or later—included with the NI 78xxR

(Optional) LabVIEW Real-Time Module 7.1 or later

Note The examples referenced in this document require LabVIEW 8.0 or later and NI-RIO 2.0

or later.

❑

Development computer or PXI/CompactPCI chassis and PXI/CompactPCI embedded controller

running Windows 2000/XP.

At least one cable and device for connecting signals to the NI 78xxR.

Step 1. Install Application Software and Driver

Before installing the NI 78xxR, you need to install the application software and device driver.

Note The NI PXI-7831R supports LabVIEW 7.0 or later, LabVIEW FPGA Module 1.0 or later,

and NI-RIO 1.0 or later. The NI PCI-7831R and NI PXI-7811R support NI-RIO 1.1 or later.

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NI PCI-78xxR Device

PCI System Slot

PC with PCI Slot

Figure 2. Installing an NI PCI-78xxR Device

PXI-1000B

PXI Chassis

PXI System Controller

NI PXI-78xxR Device

Injector/Ejector Handle

Front-Panel Mounting Screws

Module Guides

Power Switch

Figure 3. Installing an NI PXI-78xxR Device in a PXI Chassis

5. For the NI PCI-78xxR, secure the device mounting bracket to the computer back panel rail. For the

NI PXI-78xxR, secure the device front panel to the chassis front panel mounting rail using the

front-panel mounting screws.

6. For the NI PCI-78xxR, replace the computer cover, if applicable.

7. Plug in and power on the computer or PXI chassis.

To confirm that your device is recognized, complete the following additional steps:

1. Double-click the Measurement & Automation icon on the desktop to open Measurement &

Automation Explorer (MAX).

2. Expand Devices and Interfaces.

3. Verify that the device appears under Devices and Interfaces»RIO Devices.

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Step 3. Connect Signals

Figure 4 shows the I/O connector pin assignments and locations for NI 781xR Digital R Series devices.

Figure 5 shows the I/O connector pin assignments and locations for NI 78xxR Multifunction R Series

devices.

68 34

DIO39

DIO38

DIO37 67 33 DIO36

DIO35 66 32 DIO34

TERMINAL 68

TERMINAL 34

TERMINAL 35

TERMINAL 1

65 31 DIO32

64 30 DIO30

63 29 DIO28

62 28 +5V

DIO33

DIO31

DIO29

DIO27

DIO26

DIO25

DIO24

61 27 +5V

60 26 DGND

DGND

59 25

DIO23 58 24 DGND

TERMINAL 1

TERMINAL 35

TERMINAL 34

TERMINAL 68

DIO22 57 23

56 22

DIO20 55 21

DGND

DIO21

54 20 DGND

DIO19

DIO18

DIO17

DIO16

DIO15

53 19

52 18

DGND

51 17 DGND

50 16

DGND

DIO14 49 15

48 14 DGND

47 13 DGND

46 12 DGND

45 11 DGND

44 10 DGND

DIO13

DIO12

DIO11

DIO10

DIO9

DIO8

DIO7

DIO6

DIO5

DIO4

DIO3

DIO2

DIO1

DIO0

TERMINAL 68

TERMINAL 34

TERMINAL 35

TERMINAL 1

DGND

TERMINAL 1

TERMINAL 35

TERMINAL 34

TERMINAL 68

Figure 4. NI 781xR Connector Pin Assignments and Locations

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68 34

DIO39

DIO38

68 34

67 33

66 32

65 31

64 30

63 29

62 28

61 27

60 26

59 25

58 24

57 23

56 22

55 21

54 20

53 19

52 18

51 17

50 16

49 15

48 14

47 13

46 12

45 11

44 10

AI0–

AI0+

AIGND0

AI1+

DIO37 67 33 DIO36

DIO35 66 32 DIO34

AIGND1

AI1–

TERMINAL 68

TERMINAL 34

65 31 DIO32

64 30 DIO30

63 29 DIO28

62 28 +5V

DIO33

DIO31

DIO29

DIO27

DIO26

DIO25

DIO24

AI2+

AI2–

AIGND2

AIGND3

AI3–

AI4–¹

AIGND5

AI5–¹

AI6–¹

AI3+

AI4+¹

61 27 +5V

AIGND4

AI5+¹

AI6+¹

60 26 DGND

DGND

59 25

DIO23 58 24 DGND

AIGND6

AI7+¹

AIGND7

AI7–¹

TERMINAL 1

TERMINAL 35

DIO22 57 23

56 22

DIO20 55 21

DGND

DIO21

AISENSE

AO0

No Connect

AOGND0

AOGND1

AOGND2

AOGND3

AOGND4

AOGND5

AOGND6

AOGND7

DIO14

54 20 DGND

DIO19

DIO18

DIO17

DIO16

DIO15

AO1

53 19

52 18

DGND

AO2

AO3

AO4¹

51 17 DGND

AO5¹

50 16

DGND

AO6¹

DIO14 49 15

AO7¹

DIO15

DIO13

DIO11

DIO9

DIO7

DIO6

DIO5

DIO4

DIO3

DIO2

DIO1

DIO0

+5V

48 14 DGND

47 13 DGND

46 12 DGND

45 11 DGND

44 10 DGND

DIO13

DIO12

DIO11

DIO10

DIO9

DIO8

DIO7

DIO6

DIO5

DIO4

DIO3

DIO2

DIO1

DIO0

TERMINAL 68

TERMINAL 34

TERMINAL 35

TERMINAL 1

DIO12

DIO10

DIO8

DGND

+5V

TERMINAL 1

TERMINAL 35

TERMINAL 34

TERMINAL 68

¹No Connect on the NI 7830R

Figure 5. NI 783xR Connector Pin Assignments and Locations

Caution Connections that exceed any of the maximum ratings of input or output signals on the

NI 78xxR can damage the NI 78xxR and the computer or chassis. NI is not liable for any damage

resulting from such signal connections. For the maximum input and output ratings for each signal,

refer to the NI 781xR User Manual for NI 781xR Digital R Series devices or the NI 783xR User

Manual for NI 78xxR Multifunction R Series devices.

For detailed information about connecting I/O signals, refer to the NI 781xR User Manual for NI 781xR

Digital R Series devices or the NI 783xR User Manual for NI 78xxR Multifunction R Series devices.

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Connectivity Options

Accessing the signals on the I/O connectors requires at least one cable and one signal accessory. Table 1

summarizes the National Instruments connectivity options available for use with the NI 78xxR device.

Table 1. R Series Connectivity Options

Cable

Connector

Accessory

NI SCB-68

Description

SHC68-68-RMIO^*

(NI Recommended)

High-performance shielded cable wired

specifically for signal connection from the

RMIO connector^†to the SCB-68 terminal block

to provide higher signal integrity and noise

immunity.

SHC68-68-RDIO

(NI Recommended)

1, 2

NI SCB-68

High-performance shielded cable wired

specifically for signal connection from the

RDIO connector^†to the SCB-68 terminal block

to provide higher signal integrity and noise

immunity.

1, 2

0, 1, 2

—

NI cRIO-9151

R Series Expansion

chassis

Connect signals from the RDIO connector to the

NI cRIO-9151 Expansion chassis for expansion

I/O and signal conditioning.

SH68-C68-S

NI SCB-68

Basic shielded cable for signal connection from

the RMIO or RDIO connector to the NI SCB-68

terminal block for noise reduction.

CAT 5 Ethernet

crossover cable^*

—

For use with the NI PXI-78xxR running the

LabVIEW Real-Time Module, if the real-time

PXI system is not configured on a network.

To connect the PXI system to a network port, use

a standard CAT 5 10/100Base-T Ethernet cable.

^*NI 78xxR Multifunction R Series devices only.

^†For a diagram of the twisted pairs in the SHC68-68-RMIO and SHC68-68-RDIO cables and the signals to which they

correspond, go to ni.com/info and enter the info code rdrmio.

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Step 4. Using Your NI 78xxR Device with a LabVIEW FPGA Example VI

(NI 783xR/784xR/785xR Only)

The NI-RIO driver installation includes a variety of example projects to help get you started.

This section demonstrates how to use an existing LabVIEW FPGA example project to take an

analog input measurement with the NI 78xxR device.

Each R Series example project includes:

•

A LabVIEW FPGA VI that can be compiled and run embedded in FPGA hardware

A Host VI that runs in LabVIEW for Windows and interacts with the LabVIEW FPGA VI

The examples are configured for a specific target and are not necessarily configured for your device.

To use the examples for a different target, you must copy the items contained within the VI to a new

FPGA target.

Note To acquire real-world data in the analog input measurement taken in this example,

you will also need to provide your own signal source, such as a battery or function generator.

To access the analog input example project and take a measurement, complete the following steps:

1. Launch LabVIEW.

2. In the Getting Started window, click Find Examples to display the NI Example Finder.

3. In the NI Example Finder window, select Hardware Input and Output»R Series. This directory

holds several example projects designed to help you get started using your R Series device.

4. Select Basic I/O and then select Analog Input - R Series.lvproj.

5. The Analog Input example project opens in the Project Explorer window. This project is

precompiled for the NI PCI-7831R. If you are not using an NI PCI-7831R, then you need

to copy the example files into a new target directory and recompile the code. To compile

Analog Input - R Series.lvproj for a new R Series target, complete the following steps:

a. Right-click My Computer and select New»T a rgets and Devices to create a new target

in the Project Explorer window.

b. Select the Existing target or device radio button.

c. Expand the FPGA Target folder to display a list of the R Series devices you can add.

From the list, select the device for which you want to create a new directory, and click OK.

If your R Series device does not appear under this tree structure, refer to the Step 2. Install the

Device, Accessories, and Cables section and confirm that the device was installed correctly.

d. In the Project Explorer window, expand the original FPGA target and locate the Items to

Move folder. This folder holds all the target VIs and I/O resources necessary to run the

example VI. Click on the folder and drag it to the new FPGA Target.

Note The new target must support all of the analog input items included in this folder.

e. Right-click the Analog Input (FPGA).vi file within the Items to Move folder and select

Compile to recompile the FPGA VI. Recompiling takes several minutes. When the bitstream

generation is complete, close the LabVIEW FPGA Compile Server.

f. Open Analog Input (Host).vi under My Computer and switch to the block diagram to update

the host VI and its references to the FPGA VI.

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g. On the block diagram, right-click the Open FPGA VI Reference function and choose

Select VI from the shortcut menu.

h. In the Select VI dialog box, select Analog Input (FPGA).vi in the new target and click OK.

i. In the Project Explorer window, right-click the original FPGA target and select Remove to

delete it from the project.

j. Save the project to a new directory by selecting File»Save As.

6. Click the Run button in Analog Input (Host).vi to run the VI. The host VI displays the data being

acquired by the R Series device. To view real-world data, wire a signal source or voltage source to

AI0+ (RMIO pin 68) and AI0– (RMIO pin 34) of the terminal block.

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Adding Analog Output to the FPGA Application

To expand the LabVIEW FPGA application to include analog output, complete the following steps:

1. On the block diagram of Analog Input (FPGA).vi, insert a new frame between the first and second

frames of the Flat Sequence structure by right-clicking the divider between the first two frames and

selecting Insert Frame from the shortcut menu, as shown in the following figure.

2. In the Project Explorer window, right-click the FPGA target and select New»FPGA I/O.

3. In the New FPGA I/O dialog box, expand Connector0 and select AO0.

Note This example reflects the naming conventions and graphic interface of LabVIEW 8.5. Items

such as FPGA I/O resources may appear differently if you are using earlier versions of LabVIEW.

4. Click Add, then click OK.

5. Click Connector0/AO0 in the Project Explorer window and drag it into the second frame of the

Flat Sequence structure on the block diagram of the FPGA VI. The FPGA I/O Node is created

automatically.

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6. Right-click the input terminal of the new FPGA I/O Node and select Create»Control from the

shortcut menu. Rename the control AO Voltage, as shown in the following block diagram.

7. Save the VI, then right-click Analog Input (FPGA).vi in the Project Explorer window and select

Compile from the shortcut menu to recompile the FPGA VI.

8. Modify the host VI to control the additional AO channel you created by completing the

following steps:

a. Open the Analog Input (Host).vi block diagram.

b. Place a Read/Write Control from the FPGA Interface palette between the Invoke method

and the Read/Write Control that already exists on the block diagram.

c. Wire the FPGA VI Reference Out terminal of the Invoke Method node to the FPGA VI

Reference In terminal of the new Read/Write Control. Wire the FPGA Reference Out

terminal of the new Read/Write Control to the FPGA VI Reference In terminal of the

existing Read/Write Control.

d. Wire the error out output of the Invoke Method node to the error in input of the new

Read/Write Control. Wire the error out output of the new Read/Write Control to the

error in input of the existing Read/Write Control.

e. Click the terminal labeled Unselected and change it to AO Voltage.

f. Right-click the AO Voltage terminal and select Create»Control, as shown in the following

block diagram.

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9. On the front panel, locate the numeric control labeled AO Voltage. Right-click the control and

select Num Ctrls»Knob from the Express controls palette to change the control type to knob.

10. On the front panel, click and highlight the value in the lower limit of the knob to change the limit

to –32000. Click and highlight the value in the upper limit to change the limit to 32000.

11. Save the VI.

12. Using the terminal block, connect analog output channel 0 to analog input channel 0

by wiring AI0+ (RMIO pin 68) to AO0 (RMIO pin 55) and AI0– (RMIO pin 34) to

AOGND0 (RMIO pin 21), respectively.

13. Click the Run button in Analog Input (Host).vi and adjust the knob which controls analog output

channel 0. Notice how the change in voltage affects the reading on analog input channel 0.

Where to Go From Here

The following resources contain information for writing applications and taking measurements with

R Series Intelligent DAQ devices.

•

LabVIEW FPGA documentation

–

Getting Started with LabVIEW FPGA 8.x—This KnowledgeBase, available at ni.com/kb,

provides links to the top resources that can be used to assist in getting started with

programming in LabVIEW FPGA.

–

FPGA Module book in the LabVIEW Help—Select Help»Search the LabVIEW Help in

LabVIEW to view the LabVIEW Help. Browse the FPGA Module book in the Contents tab

for information about how to use the FPGA Module to create VIs that run on the NI 78xxR

device.

–

LabVIEW FPGA Module Release and Upgrade Notes—Contains information about installing

and getting started with the LabVIEW FPGA Module. Select Start»All Programs»National

Instruments»LabVIEW»LabVIEW Manuals to view the LabVIEW Manuals directory

that contains this document.

•

National Instruments Example Finder—LabVIEW contains an extensive library of VIs and

example programs for use with R Series devices. To access the NI Example Finder, open LabVIEW

and select Help»Find Examples, then select Hardware Input and Output»R Series.

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•

NI 783xR User Manual—Describes the electrical and mechanical aspects of the NI 78xxR

Multifunction R Series devices, contains information about R Series device operation and

programming, and includes device specifications. To access this document, refer to ni.com/

manuals.

•

NI 781xR User Manual—Describes the electrical and mechanical aspects of the NI 781xR Digital

R Series devices, contains information about Digital R Series device operation and programming,

and includes device specifications.

LabVIEW FPGA IPNet—Offers resources for browsing, understanding, and downloading

LabVIEW FPGA functions or IP (Intellectual Property). Use this resource to acquire IP that you

need for your application, download examples to help learn programming techniques, and explore

the depth of IP offered by the LabVIEW FPGA platform. To access the LabVIEW FPGA IPNet,

visit ni.com/ipnet.

Where to Go for Support

The National Instruments Web site is your complete resource for technical support. At ni.com/

support you have access to everything from troubleshooting and application development self-help

resources to email and phone assistance from NI Application Engineers.

National Instruments corporate headquarters is located at 11500 North Mopac Expressway, Austin,

Texas, 78759-3504. National Instruments also has offices located around the world to help address

your support needs. For telephone support in the United States, create your service request at

ni.com/support and follow the calling instructions or dial 512 795 8248. For telephone support

outside the United States, contact your local branch office:

Australia 1800 300 800, Austria 43 662 457990-0, Belgium 32 (0) 2 757 0020,

Brazil 55 11 3262 3599, Canada 800 433 3488, China 86 21 5050 9800,

Czech Republic 420 224 235 774, Denmark 45 45 76 26 00, Finland 358 (0) 9 725 72511,

France 01 57 66 24 24, Germany 49 89 7413130, India 91 80 41190000, Israel 972 3 6393737,

Italy 39 02 41309277, Japan 0120-527196, Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28,

Malaysia 1800 887710, Mexico 01 800 010 0793, Netherlands 31 (0) 348 433 466,

New Zealand 0800 553 322, Norway 47 (0) 66 90 76 60, Poland 48 22 3390150,

Portugal 351 210 311 210, Russia 7 495 783 6851, Singapore 1800 226 5886,

Slovenia 386 3 425 42 00, South Africa 27 0 11 805 8197, Spain 34 91 640 0085,

Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151, Taiwan 886 02 2377 2222,

Thailand 662 278 6777, Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545

National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation.

Refer to the Terms of Use section on ni.com/legal for more information about National

Instruments trademarks. Other product and company names mentioned herein are trademarks or trade

names of their respective companies. For patents covering National Instruments products, refer to the

appropriate location: Help»Patents in your software, the patents.txt file on your CD, or

ni.com/patents.

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