National Instruments 7831R Manual de usuario

Getting Started with the NI 7831R

This document explains how to set up the National Instruments 7831R

device.

Introduction

The NI 7831 is an R Series reconfigurable I/O (RIO) device with 96 digital

I/O (DIO) lines, eight independent 16-bit analog output (AO) channels, and

eight independent 16-bit analog input (AI) channels.

Traditional I/O devices have a fixed functionality provided by an

application-specific integrated circuit (ASIC), but the NI 7831R has a

field-programmable gate array (FPGA) that allows you to define device

functionality and timing.

You can use the LabVIEW FPGA Module to graphically design the

NI 7831R timing and functionality without having to learn a low-level

programming language or a hardware description language (HDL)

traditionally used for FPGA design. With the LabVIEW FPGA Module,

you create or download a custom virtual instrument (VI) to the FPGA.

You can reconfigure the NI 7831R device with a new VI at any time.

You can use the LabVIEW Real-Time Module to communicate and control

the NI 7831R device while performing additional tasks, such as real-time

floating-point processing and data logging.

Note If you are using LabVIEW but not the LabVIEW FPGA Module, you can create VIs

that run in LabVIEW to control existing FPGA VIs, but you cannot create new FPGAVIs.

The NI 7831R device has Flash memory that you can use to store VIs.

You can configure VIs to load to the FPGA and to run when the device

powers up.

Getting Started with the NI 7831R 2 ni.com

Required Items

This section provides lists of the items necessary for getting started using

the PXI-7831R and the PCI-7831R device with Windows 2000/XP and the

LabVIEW Real-Time Module.

Documentation

The NI 7831R User Manual describes the electrical and mechanical aspects

of the NI 7831R device and contains information about device operation

and programming. This document is included on the NI-RIO CD and is also

available at ni.com/manuals.

LabVIEW Help is available in LabVIEW by selecting Help»VI, Function,

& How-To Help.

PXI-7831R with Windows 2000/XP

Use the following items to set up and use the PXI -7831R with

Windows 2000/XP.

❑PXI-7831R device

❑The following software packages:

– LabVIEW 7.0 or later

– LabVIEW FPGA Module 1.0 or later—required to develop

custom FPGA VIs for the PXI-7831R device

– NI-RIO 1.1 or later—included with the PXI-7831R

❑PXI/CompactPCI chassis and a PXI/CompactPCI embedded

controller running Windows 2000/XP or any computer running

Windows 2000/XP and a MXI-3 link to a PXI/CompactPCI chassis

❑At least one cable and device for connecting signals to the PXI-7831R

©National Instruments Corporation 3 Getting Started with the NI 7831R

PCI-7831R with Windows 2000/XP

Use the following items to set up and use the PCI-7831R with

Windows 2000/XP.

❑PCI-7831R device

❑The following software packages:

– LabVIEW 7.1 or later

– LabVIEW FPGA Module 1.1 or later—required to develop

custom FPGA VIs for the PCI-7831R device

– NI-RIO 1.1 or later—included with the PCI-7831R

❑Pentium-based PCI computer running Windows 2000/XP

❑At least one cable and device for connecting signals to the PCI-7831R

PXI-7831R with the LabVIEW Real-Time Module for ETS

Use the following items to set up and use the PXI-7831R with the

LabVIEW FPGA Module and the LabVIEW Real-Time Module.

❑PXI-7831R device

❑The following software packages:

– LabVIEW 7.0 or later

– LabVIEW Real-Time Module for ETS 7.0 or later

– LabVIEW FPGA Module 1.0 or later—required to develop

custom FPGA VIs for the PXI-7831R device

– NI-RIO 1.0 or later—included with the PXI-7831R

❑PXI/CompactPCI chassis and real-time PXI controller

❑One of the following host computers, depending upon your

application, running Windows 2000/XP:

–PC

– Laptop computer

– PXI/CompactPCI embedded controller

❑At least one cable and device for connecting signals to the PXI-7831R

❑CAT 5 Ethernet crossover cable 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.

Getting Started with the NI 7831R 4 ni.com

PCI-7831R with the LabVIEW Real-Time Module for ETS

Use the following items to set up and use the PCI-7831R with the

LabVIEW FPGA Module and the LabVIEW Real-Time Module for ETS.

❑PCI-7831R device

❑The following software packages:

– LabVIEW 7.1 or later

– LabVIEW Real-Time Module for ETS 7.1 or later

– LabVIEW FPGA Module 1.1 or later

– NI-RIO 1.1 or later—included with the PXI-7831R

❑Pentium-based PCI computer. For information about the desktop PC

models that National Instruments recommends, refer to the NI Web

site at ni.com/info and enter etspc.

❑One of the following host computers running Windows 2000/XP:

–PC

– Laptop computer

– PXI/CompactPCI embedded controller

❑At least one cable and device for connecting signals to the PXI-7831R

PCI-7831R with the LabVIEW Real-Time Module 7.1 for RTX

Use the following items to set up and use the PCI-7831R with the

LabVIEW Real-Time Module 7.1 for RTX.

❑PCI-7831R device

❑The following software packages:

– LabVIEW Real-Time Module for RTX 7.1 or later

– LabVIEW FPGA Module 1.1 or later

– NI-RIO CD—included with the PCI-7831R

❑Pentium-based PCI computer running Windows 2000/XP

❑A host PC running Windows 2000/XP

❑At least one cable and device for connecting signals to the PCI-7831R

©National Instruments Corporation 5 Getting Started with the NI 7831R

Installing Software

The following instructions describe how to install the NI-RIO device

drivers and LabVIEW.

Installing LabVIEW, the LabVIEW Real-Time Module for ETS, and the

LabVIEW FPGA Module

Use the following sequence when installing LabVIEW, the LabVIEW

Real-Time Module, and the LabVIEW FPGA Module. For more detailed

information about software requirements, refer to the LabVIEW FPGA

Release Notes.

If you are using NI-RIO without LabVIEW, skip these steps and complete

the steps in the Installing NI-RIO Device Drivers section.

Note You must install LabVIEW (version 7.1 or later for PCI, and version 7.0 or later for

PXI) and the LabVIEW modules you will use with the NI 7831R before installing the

NI-RIO device drivers. For LabVIEW installation instructions, refer to the LabVIEW

Release Notes.

1. Install LabVIEW for Windows from the LabVIEW CD.

2. If you are using the LabVIEW Real-Time Module for ETS, install

the LabVIEW Real-Time Module for ETS from the LabVIEW

Real-Time CD.

If you are using the PCI-7831R device with the LabVIEW Real-Time

Module for RTX, install the LabVIEW Real-Time module for RTX

from the LabVIEW Real-Time CD.

Note If you are using the NI 7831R with Windows only, it is not necessary to install the

LabVIEW Real-Time Module.

3. Install LabVIEW FPGA from the LabVIEW FPGA CD.

4. Install the NI-RIO device drivers. Refer to the Installing NI-RIO

Device Drivers section for driver installation instructions.

Getting Started with the NI 7831R 6 ni.com

Installing NI-RIO Device Drivers

Complete the following steps to install the NI-RIO device drivers that are

included with the NI 7831R device. If you are using LabVIEW, complete

the installation instructions in the Installing LabVIEW, the LabVIEW

Real-Time Module for ETS, and the LabVIEW FPGA Module section

before installing the NI-RIO device drivers.

1. Run setup.exe from the NI-RIO CD and follow the setup

instructions.

2. Follow the onscreen instructions until the Feature Tree window

appears.

3. In the Feature Tree window, select the components to install. You must

install NI-VISA, NI-RIO, and NI Measurement & Automation

Explorer (MAX).

4. Follow the onscreen instructions to complete the driver installation.

5. Reboot your computer.

Installing Hardware

This section describes how to unpack and install the PXI-7831R and the

PCI-7831R devices.

Note You must install the NI-RIO device drivers before installing the NI 7831R device.

Unpacking

The NI 7831R device ships 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 devices from the package.

Caution Never touch the exposed pins of connectors.

Remove the devices from the package and inspect the devices for loose

components or any other sign of damage. Notify NI if the devices appear

damaged in any way. Do not install damaged devices into the computer.

Store the NI 7831R in the antistatic envelope when not in use.

©National Instruments Corporation 7 Getting Started with the NI 7831R

PXI-7831R Installation

You can install the PXI-7831R in any available peripheral slot in the PXI

or CompactPCI chassis. Complete the following instructions to install the

PXI-7831R device.

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

installation instructions, refer to the Installing Software section.

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

2. Make sure there are no lit LEDs on the chassis. Wait for any lit LEDs

to go out before continuing the installation.

3. Remove the filler panel for the peripheral slot.

4. Ground yourself using a grounding strap or by touching a grounded

object, such as the PXI or CompactPCI chassis.

5. Insert the PXI-7831R into the slot. Use the injector/ejector handle to

fully inject the PXI-7831R into place.

6. Screw the front panel of the PXI-7831R to the front panel mounting

rails of the chassis.

7. Visually verify the installation. Make sure the PXI-7831R is not

touching other devices or components and that the PXI-7831R is fully

inserted into the slot.

8. Plug in and power on the PXI or CompactPCI chassis.

PCI-7831R Installation

You can install the PCI-7831R in any available PCI expansion slot in the

computer. To achieve the best noise performance, leave as much room as

possible between the PCI-7831R and other boards.

Complete the following instructions to install the PCI-7831R.

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

installation instructions, refer to the Installing Software section.

1. Power off and unplug the computer.

Caution To protect both yourself and the computer from electrical hazards, the computer

must remain off and unplugged until the PCI-7831R device is completely installed.

2. Remove the computer cover. Make sure there are no lit LEDs on the

motherboard. Wait for any lit LEDs to go out before continuing the

installation.

Getting Started with the NI 7831R 8 ni.com

3. Touch the metal part of the power supply case inside the computer to

discharge any static electricity that might be on your clothes or body.

4. Locate the metal bracket that covers the cut-out in the back panel

of the chassis for the slot you have selected. Remove and save the

bracket-retaining screw and the bracket cover.

5. Line up the PCI-7831R card-edge connector with the expansion

slot receptacle. Using slow, evenly distributed pressure, press the

PCI-7831R straight down until it seats in the expansion slot.

6. Reinstall the bracket-retaining screw to secure the PCI-7831R to the

back panel rail.

7. Visually verify the installation.

8. Replace the computer cover, and plug the computer in.

Using the NI PCI-7831R with the LabVIEW Real-Time

Module for RTX

You can use the LabVIEW Real-Time Module for RTX with the

PCI-7831R. After you have installed Venturcom RTX Runtime, the

LabVIEW Real-Time Module for RTX, and RTX support from the

NI-RIO 1.1 Driver CD, complete the following steps.

Note Before adding RTX support for the R Series device, close all NI software.

1. Select Start»Program Files»Venturcom RTX»RTX»RTX

Properties.

2. On the Plug and Play tab, right-click NI-7831R and select Add RTX

INF Support.

3. Click the Apply button. RTX Properties returns a Warning dialog box.

Click OK.

4. In the RTX Properties window, click OK.

5. Right-click My Computer and select Properties.

6. Select the Hardware tab and click Device Manager.

7. For Windows XP, expand NI-RIO Devices, right-click NI-7831R and

select Update Driver. In the Hardware Update Wizard window, select

Install the software automatically and click Next. When the wizard

finishes installing the software, click Finish. The NI PCI-7831R

appears under RTX Drivers as NI-7831R RTX Supported.

For Windows 2000, expand NI-RIO Devices, right-click NI 7831R

and select Properties. On the Driver tab, click Update Driver. In the

Upgrade Device Driver Wizard window, click Next. Select Search

for a suitable driver for my device and click Next three times. When

©National Instruments Corporation 9 Getting Started with the NI 7831R

Windows finishes installing the software, click Finish. The

NI PCI-7831R appears under RTX Drivers as NI-7831R RTX

Supported.

8. In the Device Manager window, select View»Resources by

connection.

9. In the Device Manager window, expand Interrupt Request (IRQ).

Make sure that the NI PCI-7831R is not sharing an IRQ with any other

devices. Refer to the Venturcom RTX Runtime Help for information

about modifying a PCI device.

10. Reboot your computer.

11. Select Start»Run. In the Run window, enter net start nirtrtx

and click OK.

The PCI-7831R now supports RTX. When you launch LabVIEW, the

PCI-7831R appears in the LabVIEW Execution Target menu as FPGA

Device (PCI-7831R) visa://localhost::RTRTX::0/RIO0::INSTR.

Removing RTX Support

Complete the following steps to remove RTX support from the PCI-7831R.

1. Close all NI software.

2. Select Start»Program Files»Venturcom RTX»RTX»RTX

Properties.

3. On the Plug and Play tab, right-click NI-7831R and select Remove

RTX INF Support.

4. Click Apply. RTX Properties returns a Warning dialog box. Click OK.

5. In the RTX Properties window, click OK.

6. Right-click My Computer and select Properties.

7. Select the Hardware tab and click Device Manager.

8. For Windows XP, expand Rtx Drivers, right-click NI-7831R RTX

Supported and select Update Driver.

You have removed RTX support for the PCI-7831R.

Getting Started with the NI 7831R 10 ni.com

Connecting Signals

The NI 7831R has two DIO connectors with 40 DIO lines per DIO

connector, and one MIO connector with eight AI lines, eight AO lines,

and16DIOlines.

Figure 1 shows the I/O connector locations for the PXI-7831R and the

PCI-7831R. The I/O connectors are numbered starting at zero.

Figure 1. NI 7831R Connector Locations

Reconfigurable I/O

NI PXI-7831R

CONNECTOR 0 (MIO) CONNECTOR 1 (DIO)

CONNECTOR 2 (DIO)

CONNECTOR 1 (DIO)

CONNECTOR 2 (DIO)

CONNECTOR 0 (MIO)

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