National Instruments NI 78xxR Manuale utente

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 78xx R 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.

Getting Started with R Series Intelligent DAQ 2 ni.com

Refer to the LabVIEW Release Notes for installation instructions for LabVIEW and system requirements

for the LabVIEW software. Refer to the LabVIEW Upgrade Notes for additional information about

upgrading to the most recent version of LabVIEW for Windows.

Refer to the LabVIEW FPGA Module Release and Upgrade Notes for installation instructions and

information on getting started with the LabVIEW FPGA Module.

Refer to the LabVIEW Real-Time Module Release and Upgrade Notes for system requirements,

installation instructions, and additional information on using the LabVIEW Real-Time Module.

The previous documents are available at ni.com/manuals or by selecting Start»All Programs»

National Instruments»LabVIEW»LabVIEW Manuals.

Step 2. Install the Device, Accessories, and Cables

This section describes how to unpack and install the NI PXI-78xxR and NI PCI-78xxR devices.

Note You must install NI-RIO before installing the NI 78xxR.

Unpacking

The NI 78xxR is shipped in an antistatic package to prevent electrostatic discharge from damaging

device components. To prevent such damage when handling the device, take the following precautions:

• Ground yourself using a grounding strap or by holding a grounded object, such as your computer

chassis.

• Touch the antistatic package to a metal part of the computer chassis before removing the device

from the package.

Caution Never touch the exposed pins of connectors.

Remove the device from the package and inspect the devices for loose components or any other sign of

damage. Notify NI if the device appears damaged in any way. Do not install a damaged device into the

computer.

Store the NI 78xxR in the antistatic envelope when not in use.

NI 78xx R Installation

You can install the NI PCI-78xxR in any available PCI expansion slot in the computer, and the

NI PXI-78xxR in any available peripheral slot in the PXI or CompactPCI chassis. To achieve the best

noise performance, leave as much room as possible between the NI PCI-78xxR and other boards.

Note You must install the software before installing the hardware. For software installation

information, refer to the Step 1. Install Application Software and Driver section.

1. Power off and unplug the computer or PXI chassis.

Caution Refer to the Read Me First: Safety and Radio-Frequency Interference document packaged

with your PXI chassis or device before removing equipment covers or connecting or disconnecting

any signal wires.

2. Remove the computer cover and/or the expansion slot cover on the computer, or the filler panel of

an unused PXI slot on the PXI chassis.

3. Touch any metal part of the computer or chassis to discharge any static electricity.

4. For the NI PCI-78xxR, insert the device into the applicable PCI system slot on your computer.

Gently rock the device into place. Do not force the device into place. For the NI PXI-78xxR,

insert the device into the PXI slot. Use the injector/ejector handle to fully inject the NI PXI-78xxR

into place.

©National Instruments Corporation 3 Getting Started with R Series Intelligent DAQ

Figure 2. Installing an NI PCI-78xxR Device

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.

1NIPCI-78xxR Device 3 PCI System Slot 3 PC with PCI Slot

1 PXI Chassis

2 PXI System Controller

3 NI PXI-78xxR Device

4 Injector/Ejector Handle

5 Front-Panel Mounting Screws

6 Module Guides

7 Power Switch

PXI-1000B

Getting Started with R Series Intelligent DAQ 4 ni.com

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.

Figure 4. NI 781xR Connector Pin Assignments and Locations

DGND

+5V

DIO28

DIO31

DIO33

DIO35

DIO37

DIO39

DIO0

DIO2

DIO3

DIO5

DIO6

DIO7

DIO8

DIO1

DIO4

DIO9

DIO10

DIO11

DIO12

DIO13

DIO14

DIO15

DIO16

DIO17

DIO18

DIO19

DIO20

DIO21

DIO22

DIO23

DIO24

DIO25

DIO26

DIO27

DIO29

DIO30

DIO32

DIO34

DIO36

DIO38

35 1

36 2

37 3

38 4

39 5

40 6

41 7

42 8

43 9

44 10

45 11

46 12

47 13

48 14

49 15

50 16

51 17

52 18

53 19

54 20

55 21

56 22

57 23

58 24

59 25

60 26

61 27

62 28

63 29

64 30

65 31

66 32

67 33

68 34

CONNECTOR 1

(RDIO)

TERMINAL 34

TERMINAL 68

TERMINAL 35

TERMINAL 1

TERMINAL 35

TERMINAL 1

TERMINAL 34

TERMINAL 68

TERMINAL 34

TERMINAL 68

TERMINAL 35

TERMINAL 1

CONNECTOR 0

(RDIO)

CONNECTOR 2

(RDIO)

TERMINAL 35

TERMINAL 1

TERMINAL 34

TERMINAL 68

CONNECTOR 3

(RDIO)

©National Instruments Corporation 5 Getting Started with R Series Intelligent DAQ

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.

+5V

DGND

DIO8

DIO10

DIO12

DIO14

AOGND7

AOGND6

AOGND5

AOGND4

AOGND3

AOGND2

AOGND1

AOGND0

No Connect

AI7–1

AIGND7

AI6–1

AI5–1

AIGND5

AI4–1

AI3–

AIGND3

AI2–

AI1–

AIGND1

AI0–

+5V

DIO1

DIO2

DIO4

DIO5

DIO6

DIO7

DIO0

DIO3

DIO9

DIO11

DIO13

DIO15

AO71

AO61

AO51

AO41

AO3

AO2

AO1

AO0

AISENSE

AI7+1

AIGND6

AI6+1

AI5+1

AIGND4

AI4+1

AI3+

AIGND2

AI2+

AI1+

AIGND0

AI0+

35 1

36 2

37 3

38 4

39 5

40 6

41 7

42 8

43 9

44 10

45 11

46 12

47 13

48 14

49 15

50 16

51 17

52 18

53 19

54 20

55 21

56 22

57 23

58 24

59 25

60 26

61 27

62 28

63 29

64 30

65 31

66 32

67 33

68 34

1No Connect on the NI 7830R

DGND

+5V

DIO28

DIO31

DIO33

DIO35

DIO37

DIO39

DIO0

DIO2

DIO3

DIO5

DIO6

DIO7

DIO8

DIO1

DIO4

DIO9

DIO10

DIO11

DIO12

DIO13

DIO14

DIO15

DIO16

DIO17

DIO18

DIO19

DIO20

DIO21

DIO22

DIO23

DIO24

DIO25

DIO26

DIO27

DIO29

DIO30

DIO32

DIO34

DIO36

DIO38

35 1

36 2

37 3

38 4

39 5

40 6

41 7

42 8

43 9

44 10

45 11

46 12

47 13

48 14

49 15

50 16

51 17

52 18

53 19

54 20

55 21

56 22

57 23

58 24

59 25

60 26

61 27

62 28

63 29

64 30

65 31

66 32

67 33

68 34

CONNECTOR 1

(RDIO)

TERMINAL 34

TERMINAL 68

TERMINAL 35

TERMINAL 1

TERMINAL 35

TERMINAL 1

TERMINAL 34

TERMINAL 68

TERMINAL 34

TERMINAL 68

TERMINAL 35

TERMINAL 1

CONNECTOR 0

(RMIO)

CONNECTOR 2

(RDIO)

Getting Started with R Series Intelligent DAQ 6 ni.com

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 Description

SHC68-68-RMIO*

(NI Recommended)

0NI SCB-68 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 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 0, 1, 2 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.

©National Instruments Corporation 7 Getting Started with R Series Intelligent DAQ

Step 4. Using Your NI 78xx R 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»Targets 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.

Getting Started with R Series Intelligent DAQ 8 ni.com

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.

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.

Getting Started with R Series Intelligent DAQ 10 ni.com

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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