National Instruments cDAQ-9133, cDAQ-9132, cDAQ-9136, cDAQ-9137, cDAQ-9134 User Manual

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Page 1

NI cDAQ

-9132/9133/9134/

9135/9136/9137

User Manual

NI CompactDAQ Controller

NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

January 2019 371800E-01

Page 2

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Page 5

Chapter 1 Getting Started with the cDAQ Controller

Safety Guidelines..............................................................................................................1-3

Electromagnetic Compatibility Guidelines ...................................................................... 1-4

Special Guidelines for Marine Applications ............................................................ 1-5

Hardware Symbol Definitions .......................................................................................... 1-5

Unpacking......................................................................................................................... 1-6

Installing the cDAQ Controller for Windows .................................................................. 1-6

Installing the cDAQ Controller for LabVIEW Real-Time ............................................... 1-9

Connecting to the Network through the Ethernet Port ............................................. 1-14

Troubleshooting Network Communication in the LabVIEW Real-Time Controller1-14

Wiring Power to the cDAQ Controller............................................................................. 1-15

Powering Down the cDAQ Controller ............................................................................. 1-17

Controller Startup Options................................................................................................ 1-17

Removing Modules from the cDAQ Controller ............................................................... 1-18

Mounting the cDAQ Controller........................................................................................ 1-18

Mounting the cDAQ Controller on a Panel .............................................................. 1-21

Using the cDAQ Controller on a Desktop ................................................................ 1-24

Mounting the cDAQ Controller on a DIN Rail ........................................................ 1-26

Mounting the cDAQ Controller on a Rack............................................................... 1-27

Installing the Module Immobilization Accessory .................................................... 1-28

cDAQ Controller Features................................................................................................ 1-30

Mini DisplayPort Connector..................................................................................... 1-30

USB Host Ports......................................................................................................... 1-31

USB Device Port ...................................................................................................... 1-32

RESET Button .......................................................................................................... 1-33

Power Button ............................................................................................................ 1-33

LEDs......................................................................................................................... 1-34

Ethernet Ports ........................................................................................................... 1-36

Ethernet LEDs .................................................................................................. 1-37

Ethernet Cabling ............................................................................................... 1-37

NI-XNET CAN/LIN Connector ............................................................................... 1-38

PFI 0 SMB Connector .............................................................................................. 1-39

RS-232 Serial Port .................................................................................................... 1-39

Power Connector ...................................................................................................... 1-39

SD Card Removable Storage .................................................................................... 1-39

SD Card LEDs .................................................................................................. 1-40

SD Card Slot Cover .......................................................................................... 1-40

USER1 Button .......................................................................................................... 1-41

Chassis Grounding Screw......................................................................................... 1-41

CMOS Battery and CMOS Reset Button ................................................................. 1-41

Resetting the System CMOS and BIOS Settings ............................................. 1-41

Page 6

Contents

Cables and Accessories..................................................................................................... 1-42

Using the cDAQ Controller .............................................................................................. 1-44

C Series Module........................................................................................................ 1-45

Parallel versus Serial DIO Modules.................................................................. 1-45

cDAQ Module Interface ........................................................................................... 1-45

STC3 ......................................................................................................................... 1-45

Processor and Ports ................................................................................................... 1-46

Chapter 2 Analog Input

Analog Input Triggering Signals ...................................................................................... 2-1

Analog Input Timing Signals............................................................................................2-1

AI Sample Clock Signal ........................................................................................... 2-2

Routing the Sample Clock to an Output Terminal ........................................... 2-2

AI Sample Clock Timebase Signal ........................................................................... 2-2

AI Convert Clock Signal Behavior For Analog Input Modules ............................... 2-2

Scanned Modules.............................................................................................. 2-3

Simultaneous Sample-and-Hold Modules ........................................................2-3

Sigma-Delta Modules ....................................................................................... 2-3

Slow Sample Rate Modules..............................................................................2-4

AI Start Trigger Signal ............................................................................................. 2-4

Using a Digital Source ...................................................................................... 2-5

Using an Analog Source ................................................................................... 2-5

Routing AI Start Trigger to an Output Terminal .............................................. 2-5

AI Reference Trigger Signal..................................................................................... 2-5

Using a Digital Source ...................................................................................... 2-6

Using an Analog Source ................................................................................... 2-6

Routing the Reference Trigger Signal to an Output Terminal..........................2-6

AI Pause Trigger Signal............................................................................................ 2-7

Using a Digital Source ...................................................................................... 2-7

Using an Analog Source ................................................................................... 2-7

Getting Started with AI Applications in Software............................................................ 2-7

Chapter 3 Analog Output

Analog Output Data Generation Methods ........................................................................ 3-1

Software-Timed Generations .................................................................................... 3-1

Hardware-Timed Generations................................................................................... 3-2

Buffered Analog Output ................................................................................... 3-2

Analog Output Triggering Signals.................................................................................... 3-3

Analog Output Timing Signals ......................................................................................... 3-3

AO Sample Clock Signal .......................................................................................... 3-3

Routing AO Sample Clock to an Output Terminal........................................... 3-4

AO Sample Clock Timebase Signal .........................................................................3-4

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Page 7

NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

AO Start Trigger Signal............................................................................................ 3-4

Using a Digital Source...................................................................................... 3-4

Using an Analog Source ................................................................................... 3-4

Routing AO Start Trigger Signal to an Output Terminal ................................. 3-5

AO Pause Trigger Signal .......................................................................................... 3-5

Using a Digital Source...................................................................................... 3-5

Using an Analog Source ................................................................................... 3-6

Minimizing Glitches on the Output Signal....................................................................... 3-6

Getting Started with AO Applications in Software .......................................................... 3-6

Chapter 4 Digital Input/Output and PFI

Digital Input/Output ......................................................................................................... 4-1

Serial DIO versus Parallel DIO Modules ................................................................. 4-1

Static DIO ................................................................................................................. 4-2

Digital Input.............................................................................................................. 4-2

Digital Input Triggering Signals....................................................................... 4-2

Digital Input Timing Signals ............................................................................ 4-2

Digital Input Filters .......................................................................................... 4-6

Getting Started with DI Applications in Software............................................ 4-7

Change Detection Event ........................................................................................... 4-7

Routing Change Detection Event to an Output Terminal................................. 4-7

Change Detection Acquisition.......................................................................... 4-7

Digital Output ........................................................................................................... 4-8

Digital Output Data Generation Methods......................................................... 4-8

Digital Output Triggering Signals .................................................................... 4-9

Digital Output Timing Signals ......................................................................... 4-10

Getting Started with DO Applications in Software.......................................... 4-13

Digital Input/Output Configuration for NI 9401 ...................................................... 4-13

PFI .................................................................................................................................... 4-13

PFI Filters ................................................................................................................. 4-13

Chapter 5 Counters

Counter Timing Engine .................................................................................................... 5-2

Counter Input Applications .............................................................................................. 5-3

Counting Edges......................................................................................................... 5-3

Single Point (On-Demand) Edge Counting ...................................................... 5-3

Buffered (Sample Clock) Edge Counting......................................................... 5-4

Controlling the Direction of Counting.............................................................. 5-5

Pulse-Width Measurement ....................................................................................... 5-5

Single Pulse-Width Measurement .................................................................... 5-5

Implicit Buffered Pulse-Width Measurement................................................... 5-6

Sample Clocked Buffered Pulse-Width Measurement ..................................... 5-6

Page 8

Contents

Pulse Measurement ................................................................................................... 5-7

Single Pulse Measurement ................................................................................ 5-8

Implicit Buffered Pulse Measurement .............................................................. 5-8

Sample Clocked Buffered Pulse Measurement ................................................ 5-9

Semi-Period Measurement........................................................................................ 5-9

Single Semi-Period Measurement ....................................................................5-10

Implicit Buffered Semi-Period Measurement ................................................... 5-10

Pulse versus Semi-Period Measurements .........................................................5-10

Frequency Measurement........................................................................................... 5-11

Low Frequency with One Counter.................................................................... 5-11

High Frequency with Two Counters................................................................. 5-12

Large Range of Frequencies with Two Counters ............................................. 5-12

Sample Clocked Buffered Frequency Measurement ........................................ 5-13

Choosing a Method for Measuring Frequency .................................................5-14

Which Method Is Best?.....................................................................................5-16

Period Measurement ................................................................................................. 5-18

Position Measurement............................................................................................... 5-19

Measurements Using Quadrature Encoders...................................................... 5-19

Channel Z Behavior .................................................................................................. 5-20

Measurements Using Two Pulse Encoders....................................................... 5-21

Buffered (Sample Clock) Position Measurement ............................................. 5-21

Two-Signal Edge-Separation Measurement ............................................................. 5-22

Single Two-Signal Edge-Separation Measurement .......................................... 5-22

Implicit Buffered Two-Signal Edge-Separation Measurement ........................ 5-23

Sample Clocked Buffered Two-Signal Separation Measurement .................... 5-23

Counter Output Applications ............................................................................................ 5-24

Simple Pulse Generation........................................................................................... 5-24

Single Pulse Generation.................................................................................... 5-24

Single Pulse Generation with Start Trigger ...................................................... 5-25

Pulse Train Generation ............................................................................................. 5-25

Finite Pulse Train Generation ........................................................................... 5-25

Retriggerable Pulse or Pulse Train Generation................................................. 5-26

Continuous Pulse Train Generation .................................................................. 5-27

Buffered Pulse Train Generation ......................................................................5-28

Finite Implicit Buffered Pulse Train Generation .............................................. 5-28

Continuous Buffered Implicit Pulse Train Generation ..................................... 5-29

Finite Buffered Sample Clocked Pulse Train Generation ................................ 5-29

Continuous Buffered Sample Clocked Pulse Train Generation .......................5-30

Frequency Generation............................................................................................... 5-30

Using the Frequency Generator ........................................................................5-30

Frequency Division.............................................

......................................................5-31

Pulse Generation for ETS ......................................................................................... 5-32

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Page 9

NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Counter Timing Signals.................................................................................................... 5-32

Counter n Source Signal ........................................................................................... 5-33

Routing a Signal to Counter n Source .............................................................. 5-33

Routing Counter n Source to an Output Terminal............................................ 5-34

Counter n Gate Signal............................................................................................... 5-34

Routing a Signal to Counter n Gate.................................................................. 5-34

Routing Counter n Gate to an Output Terminal ............................................... 5-34

Counter n Aux Signal ............................................................................................... 5-34

Routing a Signal to Counter n Aux .................................................................. 5-35

Counter n A, Counter n B, and Counter n Z Signals ................................................ 5-35

Routing Signals to A, B, and Z Counter Inputs................................................ 5-35

Routing Counter n Z Signal to an Output Terminal ......................................... 5-35

Counter n Up_Down Signal ..................................................................................... 5-35

Counter n HW Arm Signal ....................................................................................... 5-35

Routing Signals to Counter n HW Arm Input .................................................. 5-36

Counter n Sample Clock Signal................................................................................ 5-36

Using an Internal Source .................................................................................. 5-36

Using an External Source ................................................................................. 5-37

Routing Counter n Sample Clock to an Output Terminal ................................ 5-37

Counter n Internal Output and Counter n TC Signals .............................................. 5-37

Routing Counter n Internal Output to an Output Terminal .............................. 5-37

Frequency Output Signal .......................................................................................... 5-37

Routing Frequency Output to a Terminal......................................................... 5-37

Default Counter/Timer Routing........................................................................................ 5-37

Counter Triggering ........................................................................................................... 5-38

Other Counter Features.........................................

Cascading Counters .................................................................................................. 5-38

Prescaling.................................................................................................................. 5-39

Synchronization Modes ............................................................................................ 5-39

80 MHz Source Mode....................................................................................... 5-39

External or Internal Source Less than 20 MHz ................................................ 5-40

............................................................ 5-38

Chapter 6 Digital Routing and Clock Generation

Digital Routing ................................................................................................................. 6-1

Clock Routing................................................................................................................... 6-1

80 MHz Timebase .................................................................................................... 6-2

20 MHz Timebase .................................................................................................... 6-2

100 kHz Timebase .................................................................................................... 6-2

Page 10

Contents

Appendix A Controller Operating System and BIOS Configuration

Appendix B Where to Go from Here

Appendix C Technical Support and Professional Services

Index

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Page 11

Getting Started with the cDAQ Controller

The National Instruments four-slot CompactDAQ cDAQ-9132, cDAQ-9134, and cDAQ-9136 controllers and the eight-slot CompactDAQ cDAQ-9133, cDAQ-9135, and cDAQ-9137 controllers are available as a Windows Embedded Standard 7 (WES7) or a LabVIEW Real-Time system. NI cDAQ-9132/9133/9134/9135 controllers feature the dual-core 1.33 GHz Intel Atom processor. NI cDAQ-9136/9137 controllers feature the quad-core 1.91 GHz Intel Atom processor.

This chapter contains information about getting started with the cDAQ controller with Windows and with LabVIEW Real-Time:

• For NI cDAQ-9132/9133/9134/9135/9136/9137 for Windows, refer to the Installing the

cDAQ Controller for Windows section

• For NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time, refer to the

Installing the cDAQ Controller for LabVIEW Real-Time section

The cDAQ controller features a number of standard interfaces and combines with C Series modules to measure a broad range of analog and digital I/O signals that can be logged to the local hard drive or an SD card. For specifications, refer to the specifications document for your cDAQ controller. For module specifications, refer to the documentation included with your C Series module(s) or go to

ni.com/manuals.

Page 12

Chapter 1 Getting Started with the cDAQ Controller

ACT/ LINK

NI-XNET CAN/LIN

10/100 /1000

INPUT 9–30V 40W MAX

PFI 0

1: SD ACT 2: SD IN USE

1 2

V1 C V2 C

PUSH TO EJECT

DO NOT SEPARATE CONNECTORS WHEN

ENERGIZED IN HAZARDOUS LOCATIONS

NI CompactDAQ

NI cDAQ-9134

USER1

RS-232

1234

RESET

1: POWER 2: STATUS 3: USER1 4: USER2

234

NATIONAL

INSTRUMENTS

Figure 1-1 shows the NI cDAQ-9132/9134/9136 controller. Figure 1-2 shows the NI cDAQ-9133/9135/9137 controller.

Figure 1-1. NI cDAQ-9132/9134/9136 Controller

1 POWER, STATUS, USER1, and USER2 LEDs 2 NI-XNET CAN/LIN Connector (cDAQ-9134 Only) 3 RJ-45 Ethernet Ports 1 and 2,

ACT/LINK and 10/100/1000 Ethernet LEDs

4 Power Connector 5 Installed C Series I/O Module 6 Module Slots 7 CMOS Reset Button 8 Chassis Grounding Screw 9 USER1 Button

10 SD Card Removable Storage and SD Card Slot

Cover Mounting Holes

11 SD ACT and SD IN USE LEDs 12 RS-232 Serial Port 13 PFI 0 SMB Connector 14 Mini DisplayPort Connector 15 USB Host Ports and USB Retention Standoffs 16 USB Device Port and USB Retention Bracket 17 RESET Button 18 Power Button

1-2 | ni.com

Page 13

NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Figure 1-2. NI cDAQ-9133/9135/9137 Controller

54321 6

1 POWER, STATUS, USER1, and USER2 LEDs 2 NI-XNET CAN/LIN Connector (cDAQ-9135 Only) 3 RJ-45 Ethernet Ports 1 and 2,

ACT/LINK and 10/100/1000 Ethernet LEDs

4 Power Connector 5 Module Slots 6 Installed C Series I/O Modules 7 CMOS Reset Button 8 Chassis Grounding Screw 9 USER1 Button

NI CompactDAQ

NI cDAQ-9135

Safety Guidelines

Caution Do not operate the NI cDAQ-9132/9133/9134/9135/9136/9137 controller

in a manner not specified in these operating instructions. Product misuse can result in a hazard. You can compromise the safety protection built into the product if the product is damaged in any way. If the product is damaged, return it to National Instruments for repair.

NI 9263 NI 9263 NI 9263 NI 9263

7891213

10 SD Card Removable Storage and SD Card Slot

Cover Mounting Holes

Note Because some C Series modules may have more stringent certification

standards than the NI cDAQ-9132/9133/9134/9135/9136/9137 controller, the combined system may be limited by individual component restrictions. Refer to the specifications document for your cDAQ controller for more details.

Hot Surface This icon denotes that the component may be hot. Touching this

component may result in bodily injury.

Page 14

Chapter 1 Getting Started with the cDAQ Controller

Electromagnetic Compatibility Guidelines

This product was tested and complies with the regulatory requirements and limits for electromagnetic compatibility (EMC) stated in the product specifications. These requirements and limits provide reasonable protection against harmful interference when the product is operated in the intended operational electromagnetic environment.

This product is intended for use in industrial locations. However, harmful interference may occur in some installations or when the product is connected to a peripheral device or a test object. To minimize interference with radio and television reception and prevent unacceptable performance degradation, install and use this product in strict accordance with the instructions in the product documentation.

Furthermore, any modifications to the product not expressly approved by National Instruments could void your authority to operate it under your local regulatory rules.

Caution To ensure the specified EMC performance, product installation requires

either special considerations or user-installed add-on devices. Refer to the Installing

the cDAQ Controller for Windows section or Installing the cDAQ Controller for LabVIEW Real-Time section for further information.

Caution To ensure the specified EMC performance, operate this product only with

shielded cables and accessories. Note that the input DC power cables may be unshielded.

1-4 | ni.com

Caution To ensure the specified EMC performance, do not connect V2 to a DC

mains supply or to any supply requiring a connecting cable longer than 3 m (10 ft). A DC mains supply is a local DC electricity supply network in the infrastructure of a site or building.

Caution To ensure the specified EMC performance, the length of any cable

connected to the video and USB host ports must be no longer than 3 m (10 ft). The length of any cable connected to the RS-232 port must be no longer than 30 m (100 ft).

Caution The USB device port is intended for use in device configuration,

application deployment, debug, and maintenance.

Page 15

NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

⬉ᄤֵᙃѻક∵ᶧ᥻ࠊㅵ⧚ࡲ⊩ ˄Ё೑ ˅

Ё೑ᅶ᠋

National Instruments

ヺড়Ё೑⬉ᄤֵᙃѻકЁ䰤ࠊՓ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ

(RoHS)

Ǆ݇Ѣ

National InstrumentsЁ೑RoHS

ড়㾘ᗻֵᙃˈ䇋ⱏᔩ

ni.com/

environment/rohs_china

(For information about China RoHS compliance,

go to

ni.com/environment/rohs_china

Special Guidelines for Marine Applications

Some products are Lloyd’s Register (LR) Type Approved for marine (shipboard) applications. To verify Lloyd’s Register certification for a product, visit

ni.com/certification and

search for the LR certificate, or look for the Lloyd’s Register mark on the product label.

Caution In or der to m eet the EMC req uir ements for marine applications, install the

product in a shielded enclosure with shielded and/or filtered power and input/output ports. In addition, take precautions when designing, selecting, and installing measurement probes and cables to ensure that the desired EMC performance is attained.

Hardware Symbol Definitions

The following symbols are marked on your cDAQ controller.

Caution When this symbol is marked on a product, refer to the Safety Guidelines

section for information about precautions to take.

ESD When this symbol is marked on a product, the product could be damaged if subjected to Electrostatic Discharge (ESD) on the connector pins of any I/O port. To prevent damage, industry-standard ESD prevention measures must be employed during installation, maintenance, and operation.

EU Customers At the end of the product life cycle, all products must be sent to a WEEE recycling center. For more information about WEEE recycling centers, National Instruments WEEE initiatives, and compliance with WEEE Directive 2002/96/EC on Waste and Electronic Equipment, visit

weee

ni.com/environment/

Battery Directive This device contains a long-life coin cell battery. If you need

Cd/Hg/Pb

to replace it, use the Return Material Authorization (RMA) process or contact an authorized National Instruments service representative. For more information about compliance with the EU Battery Directives 2006/66/EC about Batteries and Accumulators and Waste Batteries and Accumulators, visit

environment/batterydirective

ni.com/

Page 16

Chapter 1 Getting Started with the cDAQ Controller

Unpacking

The cDAQ controller ships in an antistatic package to prevent electrostatic discharge (ESD). ESD can damage several components on the device.

Caution Never touch the exposed pins of connectors.

To avoid ESD damage in handling the device, take the following precautions:

• Ground yourself with a grounding strap or by touching a grounded object.

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

Remove the device from the package and inspect it for loose components or any other signs of damage. Notify NI if the device appears damaged in any way. Do not install a damaged device in your computer or controller.

Store the device in the antistatic package when the device is not in use.

Installing the cDAQ Controller for Windows

(NI cDAQ-9132/9133/9134/9135/9136/9137 for Windows) The

NI cDAQ-9132/9133/9134/9135/9136/9137 for Windows ships with preloaded Windows Embedded Standard 7 (WES7), LabVIEW (evaluation version), and NI-DAQmx driver software. NI cDAQ-9134/9135 for Windows controllers also ship with preloaded NI-XNET software. The cDAQ controller and C Series module(s) are packaged separately.

You will need the following items to set up the NI cDAQ-9132/9133/9134/9135/9136/9137 for Windows controller:

• Power connector (packaged with the cDAQ controller)

• Ferrites (packaged with the cDAQ controller)

• Power supply

• Monitor

• Compatible mini DisplayPort cable (and adapter if necessary)

• Computer mouse and keyboard

• Number 1 and number 2 Phillips screwdrivers

• C Series module(s)

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Note Table 1-1 lists the earliest supported driver version for each cDAQ controller

for Windows.

Table 1-1. cDAQ Controller NI-DAQmx Software Support

cDAQ Controller Earliest NI-DAQmx Support

NI cDAQ-9132/9134 for Windows NI-DAQmx 14.0

NI cDAQ-9133/9135 for Windows NI-DAQmx 14.5

NI cDAQ-9136/9137 for Windows NI-DAQmx 15.1

The NI-DAQmx driver software preloaded onto your cDAQ controller is available for download

ni.com/support. The documentation for NI-DAQmx is available from Start»

at All Programs»National Instruments»NI-DAQmx.

Note If you reinstall the cDAQ controller operating system, all software must also

be reinstalled.

Refer to Figure 1-1 or 1-2 while completing the following assembly steps.

1. (Optional) Mount the cDAQ controller to a panel, wall, rack, or DIN rail, or attach the desktop mounting kit, as described in the Mounting the cDAQ Controller section.

2. Connect a video monitor to the mini DisplayPort connector with a cable (and adapter if necessary). Refer to the Mini DisplayPort Connector section for more information about this connector.

3. Power on the monitor.

4. Connect a computer keyboard and mouse to the USB host ports on the cDAQ controller. Use one of the ferrites around both USB cables as described in the USB Host Ports section.

5. Attach a ring lug to a 1.31 mm

(16 AWG) or larger wire. Remove the ground screw from the ground terminal on the front panel. Attach the ring lug to the ground terminal and tighten the grounding screw to 0.5 N · m (4.4 lb · in.) of torque. Attach the other end of the wire to chassis safety ground using a method appropriate for the application, as shown in Figure 1-3. Refer to the Chassis Grounding Screw section for more information about earth ground.

Note If you use shielded cabling to connect to a C Series module with a plastic

connector, you must attach the cable shield to the chassis grounding terminal using

1.31 mm2 (16 AWG) or larger wire. Use shorter wire for better EMC performance.

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Chapter 1 Getting Started with the cDAQ Controller

I Com

ctD

I Co

ctD

-9

134N

-9

134

Figure 1-3. Ring Lug Attached to Ground Terminal

Note Make sure that no I/O-side power is connected to the module. If the controller

is in a nonhazardous location, the controller power can be on when you install modules.

6. Align the module with a cDAQ controller slot.

7. Squeeze the latches and insert the module into the module slot, and press firmly on the connector side of the module until the latches lock the module into place.

Repeat Steps 6 and 7 to install additional modules.

8. Wire your external power source and install the remaining ferrite as outlined in the Wiring

Power to the cDAQ Controller section. The cDAQ controller requires an external power

supply that meets the specifications listed in the specifications document for your cDAQ controller.

9. Turn on the external power supply.

When the cDAQ controller powers on, the POWER LED lights and the controller runs a power-on self test (POST). When the POST is complete, the operating system is loaded.

10. Go through the steps on the Set Up Windows screen that opens on your monitor. Windows prepares your desktop.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

11. Wire the C Series module as indicated in the C Series module documentation, available

ni.com/manuals.

from

12. Self-test your controller in Measurement & Automation Explorer (NI MAX) by double-clicking the NI MAX icon on the desktop to open MAX. Expand Devices and Interfaces, right-click NI cDAQ-<model number>, and select Self-Test. Self-test performs a brief test to determine successful controller installation.

13. Run a Test Panel in MAX by expanding Devices and Interfaces»NI cDAQ-<model number>, right-clicking your C Series module, and selecting Test Panels to open a test panel for the selected module.

If the test panel displays an error message, refer to

New users can view and use the Voltage - Continuous Input VI, available in the LabVIEW Example Finder. Experienced users can use the LabVIEW Sample Projects, Finite Measurement (NI-DAQmx) and Continuous Measurement and Logging (NI-DAQmx).

Caution Removing power without shutting down the cDAQ controller can corrupt

the embedded Windows system drive. For information about how to improve robustness on the Windows system, go to ni.com/info and enter the Info Code

extxxx.

Note When in use, the cDAQ controller may become warm to the touch. This is

normal.

Note The network behavior is determined by the Windows network drivers. Refer

to the Windows documentation for information about configuring IP settings.

ni.com/support.

Installing the cDAQ Controller for LabVIEW Real-Time

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time) The

NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time features a hard drive formatted for LabVIEW Real-Time. The cDAQ controller and C Series module(s) are packaged separately.

You will need the following items to set up the NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time controller:

• Power connector (packaged with the cDAQ controller)

• USB cable (packaged with the cDAQ controller)

• Ferrites (packaged with the cDAQ controller)

• Host computer running Windows (check your driver and ADE readme files for specific version compatibility)

• LabVIEW software

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Chapter 1 Getting Started with the cDAQ Controller

• LabVIEW Real-Time software

• NI-DAQmx driver (packaged with the cDAQ controller)

•

(NI cDAQ-9134/9135) NI-XNET software (packaged with the cDAQ controller)

• Power supply

• Number 1 and number 2 Phillips screwdrivers

• C Series module(s)

Refer to Figure 1-1 or 1-2 while completing the following assembly steps.

1. Install LabVIEW on your host computer, as described in the LabVIEW Installation Guide.

2. Install LabVIEW Real-Time on your host computer, as described in the LabVIEW Real-Time Module Release and Upgrade Notes.

3. Install NI-DAQmx driver software on your host computer, as described in the Read Me First: NI-DAQmx and DAQ Device Installation Guide.

Note Table 1-2 lists the earliest supported driver version for each cDAQ controller

for LabVIEW for Real-Time.

Table 1-2. cDAQ Controller NI-DAQmx Software Support

cDAQ Controller Earliest NI-DAQmx Support

NI cDAQ-9132/9134 for LabVIEW Real-Time NI-DAQmx 14.1

NI cDAQ-9133/9135 for LabVIEW Real-Time NI-DAQmx 14.5

NI cDAQ-9136/9137 for LabVIEW Real-Time NI-DAQmx 15.1

The NI-DAQmx driver software is included on the media shipped with your kit and is available for download at

ni.com/support. The documentation for NI-DAQmx is

available after installation from Start»All Programs»National Instruments» NI-DAQmx.

4. (NI cDAQ-9134/9135) Install NI-XNET on your host computer, as described in the NI-XNET Hardware and Software Installation Guide.

Note Table 1-3 lists the earliest supported driver version for each cDAQ controller

for LabVIEW Real-Time.

Table 1-3. cDAQ Controller NI-XNET Software Support

cDAQ Controller Earliest NI-XNET Support

NI cDAQ-9134 for LabVIEW Real-Time NI-XNET 14.1

NI cDAQ-9135 for LabVIEW Real-Time NI-XNET 14.5

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

5. Power on the host computer.

6. (Optional) Mount the cDAQ controller to a panel, wall, rack, or DIN rail, or attach the desktop mounting kit, as described in the Mounting the cDAQ Controller section.

7. Attach a ring lug to a 1.31 mm

Note If you use shielded cabling to connect to a C Series module with a plastic

connector, you must attach the cable shield to the chassis grounding terminal using

1.31 mm

Note Make sure that no I/O-side power is connected to the module. If the controller

(16 AWG) or larger wire. Use shorter wire for better EMC performance.

is in a nonhazardous location, the controller power can be on when you install modules.

8. Align the module with a cDAQ controller slot.

9. Squeeze the latches and insert the module into the module slot, and press firmly on the connector side of the module until the latches lock the module into place.

Repeat Steps 8 and 9 to install additional modules.

10. Wire your external power source and install the remaining ferrite as outlined in the Wiring

Power to the cDAQ Controller section. The cDAQ controller requires an external power

supply that meets the specifications listed in the specifications document for your cDAQ controller.

11. Turn on the external power supply.

When the cDAQ controller powers on, the POWER LED lights and the controller runs a power-on self test (POST). When the POST is complete, the operating system is loaded.

12. Use a USB A-to-B cable (included in the shipping kit) to connect the USB device port of the cDAQ controller to a USB port on the host computer.

Caution National Instruments requires a locking USB cable, such as part number

157788-01, in order to meet the shock and vibration specifications of this product.

Note Alternatively, you can connect the cDAQ controller to the host computer

using RJ-45 Ethernet port 1. Refer to the Connecting to the Network through the

Ethernet Port section for more information.

13. Wire the C Series module as indicated in the C Series module documentation.

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Chapter 1 Getting Started with the cDAQ Controller

14. Launch Measurement & Automation Explorer (MAX) by double-clicking the NI MAX icon on the host computer desktop. Expand Remote Systems and select NI-cDAQ<model number>-<serial number>.

Click the System Settings tab and verify that the System State reads Connected - Safe

Mode (No Software Installed)

Figure 1-4. cDAQ Controller System Settings in MAX

1 cDAQ Controller under Remote Systems 2 USB Device Port IP Address 3 Ethernet Port 1 IP Address

4 Ethernet Port 2 IP Address 5 Controller Status

Note If you are connecting through the RJ-45 Ethernet port instead of the USB

device port and cannot find the system in the MAX configuration tree, refer to the

Troubleshooting Network Communication in the LabVIEW Real-Time Controller

section.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

15. Expand NI-cDAQ<model number>-<serial number>. Right-click Software and select Add/Remove Software.

Figure 1-5. Adding Software in MAX

16. Click OK in the Log In window. The password is blank by default.

17. In the window that opens, select NI-DAQmx, and then select Install the feature. Other required dependencies will be selected automatically.

18.

(NI cDAQ-9134/9135) Select NI-XNET and then select Install the feature.

19. Click Next to confirm the requested software features.

20. Click Next to install the software. After the installation completes, the cDAQ controller reboots.

21. Click Finish.

22. In MAX, expand Remote Systems and select NI-cDAQ<model number>-<serial number>. Click the System Settings tab and verify that the System State reads

Connected - Running.

23. Self-test your controller in MAX by expanding NI-cDAQ<model number>-<serial number>»Devices and Interfaces. Right-click NI cDAQ-<model number> and select

Self-Test. Self-test performs a brief test to determine successful controller installation.

24. Run a Test Panel in MAX by expanding NI-cDAQ<model number>-<serial number>» Devices and Interfaces»NI cDAQ-<model number>, right-clicking your C Series module, and selecting Test Panels to open a test panel for the selected module.

If the test panel displays an error message, refer to

ni.com/support.

New users can view and use the Voltage - Continuous Input VI, available in the LabVIEW Example Finder. Experienced users can use the LabVIEW Sample Projects, LabVIEW Real-Time Control (NI-DAQmx) and LabVIEW Waveform Acquisition and Logging (NI-DAQmx).

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Chapter 1 Getting Started with the cDAQ Controller

Note You can configure network settings using MAX on a host computer. Refer to

the LabVIEW Real-Time Target Configuration topic of the Measurement & Automation Explorer Help for information.

Note You can configure the cDAQ controller to launch an embedded stand-alone

LabVIEW RT application each time you boot the controller. Refer t o the Building and Deploying a Stand-Alone Real-Time Application topic of the LabVIEW Real-Time Module Help for more information about startup applications.

Connecting to the Network through the Ethernet Port

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time) Use a shielded

straight through Category 5 Ethernet cable to connect the cDAQ chassis to an Ethernet network.1 Connect one end to RJ-45 Ethernet port 1 on the controller, and the other end directly to your computer or any network connection on the same subnet as your computer. Refer to the Ethernet

Cabling section for information about the Ethernet cable.

Caution To prevent data loss and to maintain the integrity of your Ethernet

installation, do not use a cable longer than 100 m.

The cDAQ controller attempts to initiate a DHCP network connection at powerup. If the cDAQ controller is unable to obtain an IP address, it connects to the network with a link-local IP address with the form a standard Ethernet connection.

169.254.x.x. The host computer communicates with the cDAQ controller over

Troubleshooting Network Communication in the LabVIEW Real-Time Controller

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time) If the cDAQ

controller cannot communicate with the network, you can perform the following troubleshooting steps.

Note Windows XP users may be required to manually install the USB driver on the

host computer. The USB driver is installed in the National Instruments\

CompactRIO\Staging\USBLAN

1. Use a USB A-to-B cable to connect the USB device port of the cDAQ controller shown in Figure 1-1, to a USB port on the host computer.

When you connect the cDAQ controller to the host computer, the USB driver creates a virtual network interface card and assigns an IP address to the cDAQ controller in the format of 172.22.11.x.

You can either use a shielded straight through Category 5 Ethernet cable or an Ethernet crossover cable to

connect the cDAQ chassis directly to your computer.

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directory.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

2. Launch MAX. Expand Remote Systems and select NI-cDAQ<model number>-<serial number>. Configure the IP and other network settings in MAX.

3. (Optional) At this point, you can reconnect the cDAQ controller to the host computer using RJ-45 Ethernet port 1. The cDAQ controller attempts to initiate a DHCP network connection at powerup. If the cDAQ controller is unable to obtain an IP address, it connects to the network with a link-local IP address with the form computer communicates with the cDAQ controller over a standard Ethernet connection.

If you are still experiencing networking issues, complete the following steps.

1. Hold the RESET button down for five seconds and then release it. The STATUS LED lights and then starts blinking three times every few seconds. The controller is now in safe mode with output from the serial port enabled. You can use a RS-232 serial port terminal to read the IP address of the controller or you can connect a monitor to the mini DisplayPort and view the IP address.

2. To set a new DHCP connection, hold the RESET button down for five seconds and then release it. The STATUS LED repeats the same behavior. The cDAQ controller attempts to establish a new DHCP connection. If it fails, it assigns itself a link-local IP address. If the DHCP connection is successful and appropriate for your application, skip to step 4.

3. Launch MAX. Expand Remote Systems and select NI-cDAQ<model number>-<serial number>. Configure the IP and other network settings in MAX.

4. Press and release the RESET button to reboot the controller.

For more information about troubleshooting network communication, refer to the MAX Remote

Systems Help or Finding a Network DAQ Device in MAX topic in the Measurement & Automation Explorer Help.

169.254.x.x. The host

Wiring Power to the cDAQ Controller

The cDAQ controller requires an external power source as described in the Power Requirements section of the specifications document for your cDAQ controller. Some suggested NI power supplies are listed in Table 1-10. The cDAQ controller filters and regulates the supplied power and provides power to all of the modules. The cDAQ controller has a primary power input, V1, and a secondary power input, V2. The POWER LED on the front panel identifies the power input in use. When the LED is lit green, V1 is in use; when the LED is lit yellow, V2 is in use.

Caution Do not connect V2 to a DC mains supply or to any supply requiring a

connecting cable longer than 3 m (10 ft). A DC mains supply is a local DC electricity supply network in the infrastructure of a site or building.

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Chapter 1 Getting Started with the cDAQ Controller

Complete the following steps to connect a power source to the cDAQ controller.

1. Make sure the power source is turned off.

2. Install the ferrite (National Instruments part number 711849-01, included in the shipping kit) across the negative and positive leads of the power source, approximately 50 to 75 mm (2 to 3 in.) from the ends of the leads near the cDAQ controller, as shown in Figure 1-6.

Figure 1-6. Installing the Ferrite on the Power Leads

3. Loosen the connector screw flanges and remove the power screw terminal connector plug from the cDAQ controller. Figure 1-7 shows the terminal screws, wh ich secure th e wi res in the screw terminals, and the connector screw flanges, which secure the connector plug on the front panel.

Figure 1-7. Power Screw Terminal Connector Plug

1 Terminal Screw 2 Connector Screw Flanges

Caution Do not tighten or loosen the terminal screws on the power connector while

the power is on.

4. Connect the positive lead of the primary power source to the V1 terminal of the power connector plug and tighten the terminal screw.

5. Connect the negative lead of the primary power source to one of the C terminals of the power screw terminal connector plug and tighten the terminal screw.

6. Optionally, you can connect the positive lead of a secondary power source to the V2 terminal and the negative lead to the other C terminal.

7. Install the power connector plug on the front panel of the cDAQ controller and tighten the connector screw flanges.

8. Turn on the external power source(s).

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

The cDAQ controller uses V1 if the voltage across V1 and C is 9 V or greater. If the V1-to-C voltage drops below 9 V, the cDAQ controller switches to V2. If the V2-to-C voltage is less than 9 V, operation may be interrupted.

Note If the cDAQ controller is using V1 and a secondary power source is

connected to V2, there is a small leakage current on V2. The leakage current depends on the V2-to-C voltage. Refer to the Power Requirements section of the specifications document for your cDAQ controller for nominal values of this leakage current.

If the power source is connected to the power connector using long wiring with high DC resistance, the voltage at the power connector may be significantly lower than the specified voltage of the power source.

The C terminals are internally connected to each other but are not connected to chassis ground. You can connect the C terminals to chassis ground externally. Refer to the Power Requirements section of the specifications document for your cDAQ controller for information about the power supply input range. Refer to the Safety Voltages section of the specifications document for your cDAQ controller for information about the maximum voltage from terminal to chassis ground.

Powering Down the cDAQ Controller

There are two methods for safely powering down the cDAQ controller:

• Power Button—Pressing and releasing the power button, shown in Figure 1-1 or 1-2, shuts down the cDAQ controller. This default behavior for the cDAQ controller is configured in the BIOS and the Windows operating system.

• Windows Software—Shut down the cDAQ-9132/9133/9134/9135/9136/9137 for Windows controller through the Windows start menu.

Caution Removing power without shutting down the cDAQ controller can corrupt

the embedded Windows system drive. For information about how to improve robustness on the Windows system, go to ni.com/info and enter the Info Code

extxxx.

Controller Startup Options

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time) You can configure

controller startup options in MAX. Select the controller under Remote Systems in the MAX configuration tree and then select the System Settings tab. You can configure the following options under Startup Settings.

• Safe Mode—When you reboot the controller with this setting on, the controller starts without launching LabVIEW RT or any startup applications. In safe mode the controller launches only the services necessary for updating configuration and installing software.

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Chapter 1 Getting Started with the cDAQ Controller

• Console Out—When you reboot the controller with this setting on, the controller redirects output to the RS-232 serial port. You can use a serial-port terminal program to read the IP address and firmware version of the controller. Use a null-modem cable to connect the RS-232 serial port to a computer. Make sure that the serial-port terminal program is configured to the following settings:

– 115,200 bits per second

– Eight data bits

– No parity

– One stop bit

– No flow control

• Disable RT Startup App—Rebooting the controller with this setting on prevents any LabVIEW startup applications from running.

• Enable Secure Shell (SSH) Logins—Rebooting the controller with this setting on starts

sshd on the controller. Starting sshd enables logins over SSH, an encrypted

communication protocol. For information about SSH, go to ni.com/info and enter the Info Code openssh.

• Embedded User Interface—You can use a single real-time VI to iteratively develop both your user interface and system logic. For more information, refer to the Using the Embedded UI to Access RT Target VIs topic in the LabVIEW Help.

Removing Modules from the cDAQ Controller

Complete the following steps to remove a C Series module from the cDAQ controller.

1. Make sure that no I/O-side power is connected to the module. If the controller is in a nonhazardous location, the controller power can be on when you remove modules.

2. Squeeze the latches on both sides of the module and pull the module out of the controller.

Mounting the cDAQ Controller

You can use the cDAQ controller on a desktop or mount it to a panel, wall, DIN rail, or rack. For accessory ordering information, refer to the pricing section of the cDAQ controller product page

ni.com.

Note The cDAQ controller was designed and tested in multiple mounting

configurations. The varied mounting orientations or configurations can reduce the maximum allowable ambient temperature and can affect the accuracy of C Series modules in the controller. Visit

cdaqmounting for more information about mounting and accuracy.

The following sections contain mounting method information. Before using any of these mounting methods, record the serial number from the side of the controller. You may be unable to read the serial number after you have mounted the controller.

1-18 | ni.com

ni.com/info and enter the Info Code

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

NI cDAQ-9134NI cDAQ-9134

NI CompactDAQNI CompactDAQ

NI cDAQ-9135NI cDAQ-9135

NI CompactDAQNI CompactDAQ

Caution You must mount the controller horizontally on a flat, vertical, metallic

surface to achieve the maximum allowable operating ambient temperature

. Mounting the controller in a different orientation or on a nonmetallic surface reduces the maximum allowable ambient temperature and can affect the measurement accuracy of modules in the controller. Figures 1-8 and 1-9 show the controller mounted horizontally. Refer to the Mounting the cDAQ Controller section for complete panel mounting instructions.

Measure the ambient temperature at each side of the controller, 63.5 mm (2.5 in.) from the side and 38.1 mm (1.5 in.) forward from the rear of the controller, as shown in Figures 1-10 and 1-11.

For more information about how different mounting configurations can cause temperature derating, go to

ni.com/info and enter the Info Code cdaqmounting.

Figure 1-8. NI cDAQ-9132/9134/9136 Mounted Horizontally with Panel Mount Kit

Figure 1-9. NI cDAQ-9133/9135/9137 Mounted Horizontally with Panel Mount Kit

The allowable operating ambient temperature for the cDAQ-9132/9133/9136/9137 is -20 to 55 °C. The allowable operating ambient temperature for the cDAQ-9134/9135 is -40 to 70 °C.

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Chapter 1 Getting Started with the cDAQ Controller

25.4 mm (1.00 in.)

Cooling Dimensions

25.4 mm (1.00 in.)

Cooling Dimensions

RS-232

PFI 0

NI-XNET

CAN/LIN

USER1

1: SD ACT

1 2

2: SD IN USE

10/100

/1000

ACT/ LINK

4: USER2

RESET

3: USER1

2 3 4

2: STATUS

1: POWER

PUSH TO EJECT

DO NOT SEPERATE CONNECTORS WHEN

ENERGIZED IN HAZARDOUS LOCATIONS

63.5 mm (2.50 in.)

38.1 mm (1.50 in.)

Measure Ambient Temperature Here

27.8 mm

(1.09 in.)

50.8 mm (2.00 in.)

63.5 mm (2.50 in.)

50.80 mm (2.00 in.) Cabling Clearance

8.1

(1.

)

Figure 1-10. NI cDAQ-9132/9134/9136 Temperature, Cooling, and Cabling Dimensions

(NI cDAQ-9134 Shown)

25.4 mm (1.00 in.)

Cooling Dimensions

1: POWER

2: STATUS

3: USER1

4: USER2

RESET

NI CompactDAQ

NI cDAQ-9134

50.80 mm (2.00 in.) Cabling Clearance

10/100 /1000

ACT/

LINK

10/100 /1000

ACT/

1: SD ACT

LINK

2: SD IN USE

NI-XNET

CAN/LIN

PFI 0

PUSH TO EJECT

DO NOT SEPERATE CONNECTORS WHEN

RS-232

ENERGIZED IN HAZARDOUS LOCATIONS

USER1

25.4 mm (1.00 in.)

Cooling Dimensions

(1.

1-20 | ni.com

Measure Ambient Temperature Here

50 in.)

63.5 mm

(2.50 in.)

Measure

50.8 mm

27.8 mm (1.09 in.)

63.5 mm

(2.50 in.)

(2.00 in.)

Ambient Temperature Here

38.1 mm (1.50 in.)

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Figure 1-11. NI cDAQ-9133/9135/9137 Temperature, Cooling, and Cabling Dimensions

(NI cDAQ-9135 Shown)

25.4 mm (1.00 in.)

25.4 mm (1.00 in.) Cooling Dimensions

Cooling Dimensions

25.4 mm (1.00 in.)

25.4 mm (1.00 in.) Cooling Dimensions

Cooling Dimensions

50.8 mm (2.00 in.) Cabling Clearance

50.8 mm (2.00 in.)

27.8 mm

27.8 mm (1.09 in.)

(1.09 in.)

63.5 mm (2.50 in.)

50.8 mm (2.00 in.)

Measure Ambient Temperature Here

38.1 mm (1.50 in.)

Measure Ambient

Temperature Here

38.1 mm

(1.50 in.)

63.5 mm

63.5 mm (2.50 in.)

(2.50 in.)

NI 9263 NI 9263 NI 9263 NI 9263

NI CompactDAQ

NI cDAQ-9135

PUSH TO EJECT

USER1

Caution Your installation must meet the following requirements for space and

cabling clearance, as shown in Figures 1-10 and 1-11:

• Allow 25.4 mm (1.00 in.) on the top and the bottom of the controller for air circulation.

• Allow 50.8 mm (2.00 in.) in front of modules for cabling clearance for common connectors, such as the 10-terminal, detachable screw terminal connector.

Mounting the cDAQ Controller on a Panel

Directly mounting the cDAQ controller to a rigid surface is the only recommended method for applications that are subject to high shock and vibration.

You can mount the cDAQ controller without a kit by screwing through a panel into the holes on the back of the controller. Use M4 screws with a length suitable for the depth of the panel.

You can use the NI panel mount kit to mount the cDAQ controller on a flat surface. Refer to the

Cables and Accessories section for the accessory part number for your cDAQ controller.

Complete the following steps.

1. Fasten the mounting plate to the controller using a number 2 Phillips screwdriver and M4 × 10 screws Tighten the screws to a maximum torque of 1.3 N · m (11.5 lb · in.).

. National Instruments provides these screws with the panel mount kit.

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Chapter 1 Getting Started with the cDAQ Controller

25.41 mm (1.000 in.)

114.3 mm (4.500 in.)

7.24 mm

(0.285 in.)

199.39 mm (7.850 in.)

1.58 mm (0.062 in.)

138.94 mm (5.470 in.)

9.14 mm (0.360 in.)

217.68 mm (8.570 in.)

108.84 mm (4.285 in.)

NI cDAQ-9134NI cDAQ-9134

NI CompactDAQNI CompactDAQ

Figure 1-12. Installing the Mounting Plate on the cDAQ Controller

(cDAQ-9133/9135/9137 Shown)

Figure 1-13. Dimensions of the cDAQ-9132/9134/9136 with Mounting Plate Installed

The NI cDAQ-9132/9134/9136 controller panel mounting plate requires four screws. The NI cDAQ-9133/9135/9137 controller panel mounting plate requires six screws.

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NI cDAQ-9134NI cDAQ-9134

NI CompactDAQNI CompactDAQ

Figure 1-14. Dimensions of the cDAQ-9133/9135/9137 with Mounting Plate Installed

327.03 mm (12.875 in.)

11.11 mm (0.437 in.)

1.55 mm (0.061 in.)

152.4 mm (6.000 in.)

7.24 mm (0.285 in.)

138.94 mm (5.470 in.)

25.41 mm (1.000 in.)

NI CompactDAQ

NI cDAQ-9135

89.85 mm (3.537 in.)

147.32 mm (5.800 in.)

2. Fasten the mounting plate to the surface using the screwdriver and screws that are appropriate for the surface. The maximum screw size is M4 or number 8.

Optionally, you can use two additional screws to attach the mounting plate to the panel or wall permanently, preventing the controller from being removed.

Figure 1-15. Permanently Attaching the Mounting Plate to the Panel or Wall

(cDAQ-9134 Shown)

114.3 mm (4.500 in.)

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Chapter 1 Getting Started with the cDAQ Controller

NI cDAQ-9134NI cDAQ-913

NI CompactDAQNI CompactDAQ

Using the cDAQ Controller on a Desktop

You can install the NI desktop mount kit to the cDAQ controller. Complete the following steps to install the NI desktop mount kit, part number 779473-01, on the cDAQ controller.

1. Align one of the end brackets with the mounting hole at one of the ends of the controller, as shown in Figure 1-16.

Figure 1-16. Connecting the End Brackets to the Controller (cDAQ-9134 Shown)

1 Mounting Holes 2 Captive Screw

2. Use a number 2 Phillips screwdriver to tighten the captive screw on the end bracket.

3. Repeat steps 1 and 2 to attach the other end bracket to the other end of the controller.

Note To achieve the highest accuracy when mounting the controller in the desktop

kit, NI recommends that you operate the controller with the modules rotated forward, as shown in Figures 1-17 and 1-18. Visit

ni.com/info and enter the Info Code

cdaqmounting for more information about mounting and accuracy.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

NI cDAQ-9134

NI CompactDAQ

Figures 1-17 and 1-18 show the dimensions of a controller after the desktop mounting kit is installed.

Figure 1-17. Dimensions of the cDAQ-9132/9134/9136 with Desktop Mounting Kit Installed

252.37 mm (9.936 in.)

2x 17.23 mm (0.678 in.)

NI CompactDAQ

NI cDAQ-9134

39.12 mm (1.540 in.)

127.23 mm (5.009 in.)

132.83 mm (5.229 in.)

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Chapter 1 Getting Started with the cDAQ Controller

Figure 1-18. Dimensions of the cDAQ-9133/9135/9137 with Desktop Mounting Kit Installed

2X 17.23 mm

(0.678 in.)

NI CompactDAQ

NI cDAQ-9135

361.71 mm (14.241 in.)

132.82 mm (5.229 in.)

39.12 mm (1.540 in.)

127.23 mm (5.009 in.)

Mounting the cDAQ Controller on a DIN Rail

Use the DIN rail mounting method if you already have a DIN rail configuration or if you need to be able to remove the controller quickly. You can use the NI DIN rail mount kit to mount the controller on a DIN rail. You need one clip for mounting the controller on a standard 35 mm DIN rail. Refer to the Cables and Accessories section for the accessory part number for your cDAQ controller. Complete the following steps to mount the controller on a DIN rail.

1. Fasten the DIN rail clip to the controller using a number 2 Phillips screwdriver and M4 × 10

. National Instruments provides these screws with the DIN rail mount kit. Tighten

screws the screws to a maximum torque of 1.3 N · m (11.5 lb · in.). Make sure the DIN rail kit is installed as shown in Figure 1-19, with the larger lip of the DIN clip positioned up. When the DIN rail kit is properly installed, the cDAQ controller is centered on the DIN rail.

The NI cDAQ-9132/9134/9136 controller DIN rail clip requires two screws. The NI cDAQ-9133/9135/9137 controller DIN rail clip requires three screws.

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Figure 1-19. Installing the DIN Rail Clip on the cDAQ Controller

(cDAQ-9132/9134/9136 Shown)

2. Insert one edge of the DIN rail into the deeper opening of the DIN rail clip, as shown in Figure 1-20, and press down firmly on the controller to compress the spring until the clip locks in place on the DIN rail.

Figure 1-20. DIN Rail Clip Parts Locator Diagram

1 DIN Rail Clip 2 DIN Rail Spring 3 DIN Rail

Caution Remove the modules before removing the controller from the DIN rail.

Mounting the cDAQ Controller on a Rack

NI offers two rack mount kits, part numbers 779102-01 and 781989-01, that you can use to mount the cDAQ controller and other DIN rail–mountable equipment on a standard 19-inch rack. You must order the NI DIN rail mount kit in addition to these kits. Refer to the Cables and

Accessories section for the accessory part number for your cDAQ controller.

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Chapter 1 Getting Started with the cDAQ Controller

Installing the Module Immobilization Accessory

The Module Immobilization accessory, part number 158533-01 (8-slot) or 158534-01 (4-slot), ensures that the C Series module latches cannot be retracted and modules cannot be removed from a system. The Module Immobilization accessory provides extra system assurance and security when shipping and installing systems, and prevents accidental removal from a system during operation.

When using the Module Immobilization accessory, NI recommends installing the accessory prior to mounting the system in any enclosure because the accessory requires tool access to the top, right, and bottom of the cDAQ controller.

What to use:

• cDAQ controller

• C Series modules

• Module Immobilization accessory kit, 158533-01 (8-slot) or 158534-01 (4-slot)

– Module immobilization bracket

– Installation screws

• M4 × 0.7 button-head screw, 8 mm

• M3 × 0.5 flat-head screws (x2), 10 mm

• Torx T10/T10H driver

• Torx T20/T20H driver

The Module Immobilization accessory kit includes two sets of screws. One set is a standard set of screws

that require a standard driver type, Torx T10 and T20. The other set is a tamper-resistant set of screws that require a security driver type, Torx T10H and T20H. Use the tamper-resistant set to help prevent unintended modification of the system.

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NI cDAQ-9135NI cDAQ-9135

NI CompactDAQNI CompactDAQ

Complete the following steps to install the Module Immobilization accessory.

Figure 1-21. Module Immobilization Accessory Installation

1. Ensure that all the C Series modules are installed in the cDAQ control ler and the latche s ar e locked in place.

2. Remove the center right panel screw from the top and bottom of the cDAQ controller using the Torx T10 driver.

3. Slide the bracket into place, aligning the three clearance screw holes.

4. Install the M4 × 0.7 button-head screw in the right end of the cDAQ controller using the appropriate Torx T20 driver. Tighten the screw to a maximum torque of 1.3 N · m (11.5lb·in.).

5. Install the two M3 × 0.5 flat-head screws from the accessory kit in the top and bottom of the cDAQ controller using the appropriate Torx T10 driver. Tighten the screws to a maximum torque of 1.3 N · m (11.5 lb · in.).

Tip NI recommends using a liquid thread locker for all fasteners if the system is

expected to experience vibration for an extended amount or time.

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Chapter 1 Getting Started with the cDAQ Controller

NI cDAQ-9134

NI CompactDAQ

329.73 mm (12.981 in.)

94.19 mm (3.708 in.)

1.58 mm (.062 in.)

NI 9263 NI 9263 NI 9263 NI 9263 NI 9263 NI 9263 NI 9263 NI 9263

Figures 1-22 and 1-23 show the dimensions of the 4-slot and 8-slot cDAQ controllers with installed Module Immobilization accessory.

Figure 1-22. Dimensions of the cDAQ-9132/9134/9136 with Module Immobilization

Accessory Installed

94.19 mm

NI CompactDAQ

NI cDAQ-9134

(3.708 in.)

1.58 mm

(0.062 in.)

200.38 mm (8.676 in.)

Figure 1-23. Dimensions of the cDAQ-9133/9135/9137 with Module Immobilization

Accessory Installed

cDAQ Controller Features

The cDAQ controller features many ports, LEDs, a RESET button, a power button, and an SD card slot. Refer to Figure 1-1 or 1-2 for the locations of these features on the cDAQ controller.

Mini DisplayPort Connector

Use the mini DisplayPort connector, shown in Figure 1-1 or 1-2, to connect a monitor to program Windows cDAQ controllers or implement a local HMI for Real-Time cDAQ controllers. You can use a single real-time VI to iteratively develop both your user interface and system logic. For more information, refer to the Using the Embedded UI to Access RT Target VIs topic in the LabVIEW Help.

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Hot Plug

CONFIG1

CONFIG2

ML_Lane3(p)

ML_Lane3(n)

GND

AUX_CH(p)

AUX_CH(n)

DP_PWR

GND

ML_Lane0(n)

ML_Lane1(p)

GND

ML_Lane2(n)

ML_Lane0(p)

ML_Lane1(n)

ML_Lane2(p)

GND

Figure 1-24 lists the mini DisplayPort pins and signals. Refer to the Cables and Accessories section for information about supported NI cables and accessories for the cDAQ controller.

Figure 1-24. Mini DisplayPort Pinout

Caution Do not hot-swap mini DisplayPort devices while the cDAQ controller is

in a hazardous location or connected to high voltages.

USB Host Ports

The cDAQ controller supports common USB mass-storage devices such as USB Flash drives and USB-to-IDE adapters formatted with FAT16 and FAT32 file systems. LabVIEW usually maps USB devices to the U:, V:, W:, or X: drive, starting with the U: drive if it is available. You can also use these ports to connect a computer keyboard and mouse for controller programming.

Install a noise-suppression ferrite (National Instruments part number 711849-01, included in the shipping kit) around all attached external USB cables to ensure that your device meets all EMC standards applicable to your country, as shown in Figure 1-25. The ferrite should be installed so that it is approximately 50 to 75 mm (2 to 3 in.) from the end of the cable that plugs into the USB host port. The ferrite should accommodate both USB cables depending on cable diameter.

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Chapter 1 Getting Started with the cDAQ Controller

Figure 1-25. Installing a Ferrite on Two USB Cables

Refer to Figure 1-1 or 1-2 for the location of the two USB host ports on the cDAQ controller. Refer to Table 1-4 for USB host port pin locations and signal descriptions.

Table 1-4. USB Host Port Pin Locations

Pinout Pin Signal Name Signal Description

1 VCC Cable power (+5 V)

2 D- USB data-

3 D+ USB data+

4 GND Ground

Caution Do not hot-swap USB devices while the cDAQ controller is in a

hazardous location or connected to high voltages. If the cDAQ controller is not in a hazardous location, you can connect and disconnect USB devices without affecting operation.

USB Device Port

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time) The USB device port,

shown in Figure 1-1 or 1-2, is intended for use in device configuration, application deployment, debug, and maintenance. For example, you can install software or driver updates through the USB device port during field maintenance instead of interrupting communication on the RJ-45 Ethernet ports.

Caution National Instruments requires a locking USB cable, such as part number

157788-01, in order to meet the shock and vibration specifications of this product.

Note The USB device port is not supported on

NI cDAQ-9132/9133/9134/9135/9136/9137 for Windows controllers.

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Refer to Table 1-5 for USB device port pin locations and signal descriptions.

Table 1-5. USB Device Port Pin Locations

Pinout Pin Signal Name Signal Description

1 VCC Cable power (+5 V)

2 D- USB data-

3 D+ USB data+

4 GND Ground

Caution Do not hot-swap USB devices while the cDAQ controller is in a

hazardous location or connected to high voltages. If the cDAQ controller is not in a hazardous location, you can connect and disconnect USB devices without affecting operation.

RESET Button

Pressing the RESET button, shown in Figure 1-1 or 1-2, resets the processor in the same manner as cycling power.

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time) You can also use the

RESET button to troubleshoot network connectivity. Holding the button down for 5 seconds, and then releasing it puts the controller into safe mode. For more information about using the RESET button to put the controller into safe mode and troubleshoot network issues, refer to the

Troubleshooting Network Communication in the LabVIEW Real-Time Controller section.

Power Button

The default behavior for the cDAQ controller is to power on when power is applied to the controller and power off by pressing and releasing the power button, shown in Figure 1-1 or 1-2. The behavior of the power button can be configured in the BIOS, as described in the Using the

BIOS Setup Utility to Change Configuration Settings section of Appendix A, Controller Operating System and BIOS Configuration. If the cDAQ controller becomes unresponsive, you

can power it off by holding the power button down for 4 seconds. For more information about safely powering down the cDAQ controller, refer to the Powering Down the cDAQ Controller section.

Caution Removing power without shutting down the cDAQ controller can corrupt

the embedded Windows system drive. For information about how to improve robustness on the Windows system, go to

extxxx.

ni.com/info and enter the Info Code

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Chapter 1 Getting Started with the cDAQ Controller

LEDs

The cDAQ controller features four LEDs—POWER, STATUS, USER1, and USER2—on its front panel as shown in Figure 1-1 or 1-2. Table 1-6 lists the LEDs and status indications.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Table 1-6. LED Indications

LED

Color LED State Indication

POWER Green Solid The cDAQ controller is powered from the V1 input.

Yellow Solid The cDAQ controller is powered from the V2 input.

Off The controller is not powered.

—

STATUS Yellow 2 flashes

every few seconds

The controller has detected an error in its software. This usually occurs when an attempt to upgrade the software is interrupted. Refer to the Measurement & Automation Explorer Help for information about installing software on the controller.

3 flashes every few

The controller is in safe mode. Refer to the Measurement & Automation Explorer Help for information about safe mode.

seconds

4 flashes every few seconds

The software has crashed twice without rebooting or cycling power between crashes. This usually occurs when the controller runs out of memory. Review your RT VI and check the memory usage. Modify the VI as necessary to solve the memory usage issue.

Continuously flashing

The controller either booted into an unsupported operating system, was interrupted during the boot process, or detected an unrecoverable software error.

Solid The controller is booting up.

Red Continuously

flashing

An internal power supply has failed. Check front-panel I/O and C Series module connections for shorts. Remove any shorts and power cycle the controller. If the problem persists, contact National Instruments.

USER1, USER2

— Off Normal operation.

Green/ yellow

— USER LEDs are controlled directly from your application.

You can define the USER1 and USER2 LEDs to meet the needs of your app lication. You can use the system hardware property node from the NI System Configuration API to write a state to the USER LEDs.

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time)

in LabVIEW Real-Time by using the RT LEDs VI. For more information about the RT LEDs VI, refer to the LabVIEW Help.

You can also define a USER LED

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Chapter 1 Getting Started with the cDAQ Controller

Ethernet Ports

The cDAQ controller has two tri-speed RJ-45 Ethernet ports, shown in Figure 1-1 or 1-2.

Refer to Figure 1-26 for Ethernet pin locations and signal descriptions. The Ethernet signal names are listed as Fast Ethernet signal name, RX/TX +/-, and then Gigabit Ethernet signal name, (RX/TX_x+/-).

Figure 1-26. Ethernet Port Pin Locations: Fast Ethernet Signals (Gigabit Ethernet Signals)

TX+ (TX_A+) TX– (TX_A–) RX+ (RX_B+) No Connect (TX_C+) No Connect (TX_C–) RX– (RX_B–) No Connect (RX_D+) No Connect (RX_D–)

1 2

4 5 6 7

Note Both Ethernet ports perform automatic crossover configuration so you do not

need to use a crossover cable to connect to a host computer.

(NI cDAQ-9132/9133/9134/9135/9136/9137 for Windows) Both Ethernet ports are enabled

and configured as DHCP, to “obtain an IP address automatically,” by default. The Ethernet ports can be configured in the Windows Control Panel, under the Network and Internet category. Both Ethernet ports provide Wake-on-LAN functionality. The Ethernet ports remain powered when the controller is in sleep mode.

(NI cDAQ-9132/9133/9134/9135/9136/9137 for LabVIEW Real-Time) Both Ethernet ports

are enabled and configured to “obtain an IP address automatically,” by default. The Ethernet ports can be configured in MAX

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Ethernet LEDs

Each Ethernet port has two LEDs—ACT/LINK and 10/100/1000—described in Table 1-7.

Table 1-7. Ethernet LED Indications

LED LED Color LED State Indication

ACT/LINK — Off LAN link not established

Green Solid LAN link established

Flashing Activity on LAN

10/100/1000 Ye l lo w Solid 1,000 Mbit/s data rate selected

Green Solid 100 Mbit/s data rate selected

— Off 10 Mbit/s data rate selected

Ethernet Cabling

Table 1-8 shows the shielded Ethernet cable wiring connections for both straight through and crossover cables.

Table 1-8. Ethernet Cable Wiring Connections

Connector 2

Pin Connector 1

Straight Through Crossover

1 white/orange white/orange white/green

2 orange orange green

3 white/green white/green white/orange

4 blue blue blue

5 white/blue white/blue white/blue

6 green green orange

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Chapter 1 Getting Started with the cDAQ Controller

Table 1-8. Ethernet Cable Wiring Connections (Continued)

Connector 2

Pin Connector 1

Straight Through Crossover

7 white/brown white/brown white/brown

8 brown brown brown

Connector 1 Connector 2

Pin 1

Pin 1 Pin 8Pin 8

NI-XNET CAN/LIN Connector

(NI cDAQ-9134/9135) The NI cDAQ-9134/9135 controller features an NI-XNET

hardware-selectable interface port that supports CAN and LIN transceiver cables.

Users have the flexibility to choose the physical bus protocol by plugging in corresponding external transceiver cables. The NI-XNET connector supports hot-swapping of transceiver cables and can detect and identify external transceiver cable types. For information about connecting to a CAN or LIN bus, refer to your NI-XNET transceiver cable operating instructions.

Caution To maintain product performance and accuracy specifications when using

the NI-XNET CAN/LIN port and NI transceiver cable(s), do not attach or mount the transceiver overmold directly to the cDAQ controller. Mount the overmolded section of the transceiver cable at least 50.8 mm (2.00 in.) away from the cDAQ controller. By following the cooling outline requirements shown in Figures 1-10 and 1-11, the NI transceiver cable will not affect the thermal performance of the system.

Caution Do not hot-swap NI-XNET devices while the cDAQ controller is in a

hazardous location or connected to high voltages. If the cDAQ controller is not in a

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hazardous location, you can connect and disconnect NI-XNET devices without affecting operation

Note (NI cDAQ-9134/9135 for LabVIEW Real-Time) To install or upgrade

NI-XNET software on the NI cDAQ-9134/9135 for LabVIEW Real-Time controller, you must install the software on the host computer and then deploy it to the controller in MAX, as described in the Installing the cDAQ Controller for LabVIEW Real-Time section.

PFI 0 SMB Connector

Refer to the PFI section of Chapter 4, Digital Input/Output and PFI, for information about the SMB connector for PFI 0.

RS-232 Serial Port

The cDAQ controller has an RS-232 (RJ50) 10-position modular jack, shown in Figure 1-1 or 1-2, to which you can connect devices such as displays or input devices. Use the Serial VIs to read from and write to the serial port. Refer to the LabVIEW Help for information about the Serial VIs. Refer to Figure 1-27 for pin locations and signal descriptions.

Figure 1-27. RS-232 Serial Port Pin Locations

1 No Connect 2 RI 3 CTS 4 RTS 5 DSR 6 GND 7 DTR 8 TXD 9 RXD 10 DCD

You can use the Ring Indicator (RI) on pin 2 to wake the controller from a low power state. You can drive RI with logic-level signals where a high level greater than 2.4 V signals a wake event.

Power Connector

Refer to the Wiring Power to the cDAQ Controller section and the specifications document for your cDAQ controller for more information about the power connector.

SD Card Removable Storage

The cDAQ controller features an SD card slot that can read from and write to NI-approved SD cards. Go to for data logging performance with cDAQ controllers.

ni.com/info and enter Info Code exyerk for information about best practices

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Chapter 1 Getting Started with the cDAQ Controller

Caution You must use the SD card slot cover to protect the SD card in hazardous

locations.

Caution Do not insert or remove SD cards unless power has been switched off or

the area is known to be nonhazardous.

Note NI recommends that you primarily log data to the SD card when logging data.

Note Using SD cards that are not approved by NI might invalidate specifications

and result in unreliable performance.

SD Card LEDs

The cDAQ controller has two LEDs that indicate SD card drive mount status and activity. Refer to Table 1-9 for descriptions of each of the LEDs.

Table 1-9. SD Card LED Indications

LED LED Color LED State Description

SD ACT Ye ll o w Off There is no I/O activity on the SD card in

the slot.

Flashing The cDAQ controller is performing I/O on

the SD card in the slot. Do not remove the SD card while this LED is flashing.

SD IN USE Green Off There is no SD card present in the slot or

the cDAQ controller has unmounted the SD card from the operating system. It is safe to remove the SD card from the slot.

Solid The SD card in the slot is mounted in the

operating system. Do not remove the SD card while this LED is lit.

SD Card Slot Cover

You must use the SD card slot cover to protect the SD card in hazardous locations. Do not remove an SD card while either LED is flashing or lit because file corruption may result.

Caution Do not insert or remove SD cards unless power has been switched off or

the area is known to be nonhazardous.

Caution Removing the SD card while the IN USE LED is lit might result in

incomplete or lost data.

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Note Screw the slot cover closed completely. Tighten the captive screws to a

maximum torque of 0.75 N · overtighten.

m (6.7 lb · in.) using a #1 Phillips screwdriver. Do not

USER1 Button

The general-purpose USER1 button is user defined. You can use the system hardware property node from the NI System Configuration API to read the state of the USER1 button. For information about programming the USER1 button, go to Code ex4b9n.

ni.com/info and enter the Info

Chassis Grounding Screw

For EMC compliance, the cDAQ controller must be connected to earth ground through the chassis ground, shown in Figures 1-1 and 1-2.

The wire should be 1.31 mm (5 ft). Attach the wire to the earth ground of the facility’s power system. For more information about earth ground connections, go to

Note If you use shielded cabling to connect to a C Series module with a plastic

connector, you must attach the cable shield to the chassis grounding terminal using

1.31 mm

(16 AWG) or larger wire. Use shorter wire for better EMC performance.

(16 AWG) solid copper wire with a maximum length of 1.5 m

ni.com/info and enter the Info Code emcground.

CMOS Battery and CMOS Reset Button

The cDAQ controller contains a CMOS battery, a lithium cell battery that stores the system clock information when the controller is powered off. There is only a slight drain on the CMOS battery when power is applied to the cDAQ controller power connector. The rate at which the CMOS battery drains when power is disconnected depends on the ambient storage temperature. For longer battery life, store the cDAQ controller at a cooler temperature. Refer to the CMOS Battery section of the specifications document for your cDAQ controller for the expected battery lifetime.

CMOS BATTERY IS DEAD warning appears onscreen during the power-on self test if the

The battery is dead. The controller still starts, but the system clock is reset to the date and time of the BIOS release. The battery is not user replaceable. If you need to replace the CMOS battery, contact National Instruments.

Resetting the System CMOS and BIOS Settings

The cDAQ controller BIOS configuration information is stored in a nonvolatile memory location that does not require a battery to preserve the settings. Additionally, the BIOS optimizes boot time by saving specific system information to memory backed up by a battery (CMOS).

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Chapter 1 Getting Started with the cDAQ Controller

Complete the following steps to reset the CMOS and reset the BIOS settings to factory default values:

1. Disconnect power from the cDAQ controller.

2. Press the CMOS reset button, shown in Figures 1-1 and 1-2, and hold it for 1 second.

3. Reconnect power to the cDAQ controller.

The

BIOS Reset Detected warning message appears onscreen.

Note If the CMOS battery is dead, the CMOS reset button will not work.

Cables and Accessories

Table 1-10 contains information about cables and accessories available for the cDAQ controller. For a complete list of cDAQ controller accessories and ordering information, refer to the pricing section of the NI cDAQ-9132/9133/9134/9135/9136/9137 product page at ni.com.

Caution To ensure the specified EMC performance, operate this product only with

shielded cables and accessories.

Table 1-10. Cables and Accessories

Accessory Part Number cDAQ Controller

NI PS-15 Power Supply (24 VDC, 5 A, 100-120/200-240 VAC input)

781093-01 All

NI PS-10 Desktop Power Supply

782698-01 All

(24 VDC, 5 A, 100-120/200-240 VAC input)

NI Retention Accessory for Mini DisplayPort 156866-01 All

SD Door Kit 783660-01 All

NI Industrial USB Extender Cable 152166-xx All

NI Locking USB Cable 157788-01 All

Panel Mounting Kit 157253-01 cDAQ-9132/9134/

9136

Panel Mounting Kit 157267-01 cDAQ-9133/9135/

9137

NI Desktop Mounting Kit 779473-01 All

DIN Rail Mount Kit 157254-01 cDAQ-9132/9134/

9136

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Table 1-10. Cables and Accessories (Continued)

Accessory Part Number cDAQ Controller

DIN Rail Mount Kit 157268-01 cDAQ-9133/9135/

9137

Module Immobilization Accessory for 4-Slot CompactRIO and CompactDAQ Controllers

Module Immobilization Accessory for 8-Slot CompactRIO and CompactDAQ Controllers

158534-01 cDAQ-9132/9134/

9136

158533-01 cDAQ-9133/9135/

9137

NI 9910 Sliding Rack Mount Kit 779102-01 All

NI Rack Mount Kit for cDAQ/cRIO 781989-01 All

NI Industrial USB Extender Cable 152166-xx All

NI Locking USB Cable 157788-01 All

CAT-5E Ethernet Cable, shielded (2, 5, and 10 m lengths)

151733-02, 151733-05,

All

151733-10

Cable Adapters for 10-position Modular Jacks (1, 2, and 3 m lengths)

182845-01, 182845-02,

All

182845-03

SD Slot Covers (x3) 783660-01 All

SD Industrial Storage Card, 16 GB 786362-01 All

SD Industrial Storage Card, 32 GB 786363-01 All

4-Position Gold Power Supply Plugs (x5) 783529-01 All

Mini DisplayPort-to-DVI Adapter Cable 157231-0R5 All

Mini DisplayPort-to-VGA Adapter Cable 157230-0R5 All

Mini DisplayPort-to-Full DisplayPort Native

157232-xx All

Cable

TRC-8546 Cable 783702-02 cDAQ-9134/9135

TRC-8542 Cable 783699-02 cDAQ-9134/9135

TRC-8543 Cable 783701-02 cDAQ-9134/9135

SMB112 SMB Plug to BNC Male Cable,

778827-01 All

50 Ω, 1 m

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Chapter 1 Getting Started with the cDAQ Controller

Table 1-10. Cables and Accessories (Continued)

Accessory Part Number cDAQ Controller

Keyboard and Mouse 779660-01 All

USB CD/DVD Drive 778492-01 All

NI TSM 1012 Touch Screen Monitor (12 in.) 783635-01 All

NI TSM 1015 Touch Screen Monitor (15 in.) 783636-01 All

NI TSM 1017 Touch Screen Monitor (17 in.) 783637-01 All

* To comply with compliance guidelines in Korea, users should use the PS-16 power supply instead of the PS-15.

Using the cDAQ Controller

The cDAQ controller consists of four parts—C Series module(s), the cDAQ module interface, the STC3, and the processor—as shown in Figure 1-28. These components digitize signals, perform digital-to-analog conversions to generate analog output signals, measure and control digital I/O signals, and provide signal conditioning.

Figure 1-28. Block Diagram

cDAQ-9132/9133/9134/9135/9136/9137

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USB

PFI 0

cDAQ Mod

C Series

I/O Module 1

Processor

STC3

Interface

ule

Series

I/O Module x

RS-232Ethernet

Mini

DisplayPort

NI-XNET

CAN/LIN

(NI cDAQ-9134/9135)

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C Series Module

National Instruments C Series modules provide built-in signal conditioning and screw terminal, spring terminal, BNC, D-SUB, or RJ-50 connectors. A wide variety of I/O types are available, allowing you to customize the cDAQ controller to meet your application needs.

C Series modules are hot-swappable and automatically detected by the cDAQ controller. I/O channels are accessible using the NI-DAQmx driver software.

Because the modules contain built-in signal conditioning for extended voltage ranges or industrial signal types, you can usually make your wiring connections directly from the C Series modules to your sensors/actuators. C Series modules can sometimes provide isolation from channel-to-earth ground and channel-to-channel.

For more information about which C Series modules are compatible with the cDAQ controller, refer to the C Series Support in NI-DAQmx document by going to the Info Code rdcdaq.

Parallel versus Serial DIO Modules

Digital module capabilities are determined by the type of digital signals that the module is capable of measuring or generating.

• Serial digital modules are designed for signals that change slowly and are accessed by either software-timed or hardware-timed reads and writes.

• Parallel digital modules are for signals that change rapidly and are updated by either software-timed or hardware-timed reads and writes.

ni.com/info and entering

For more information about digital modules, refer to Chapter 4, Digital Input/Output and PFI.

cDAQ Module Interface

The cDAQ module interface manages data transfers between the STC3 and the C Series I/O modules. The interface also handles autodetection, signal routing, and synchronization.

STC3

The STC3 features independent high-speed data streams; flexible AI, AO, and DIO sample timing; triggering; PFI signals for multi-device synchronization; flexible counter/timers with hardware gating; digital waveform acquisition and generation; and static DIO.

• AI, AO, and DIO Sample Timing—The STC3 contains advanced AI, AO, and DIO timing engines. A wide range of timing and synchronization signals are available through the PFI lines. Refer to the following sections for more information about the configuration of these signals:

– The Analog Input Timing Signals section of Chapter 2, Analog Input

– The Analog Output Timing Signals section of Chapter 3, Analog Output

– The Digital Input Timing Signals section of Chapter 4, Digital Input/Output and PFI

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Chapter 1 Getting Started with the cDAQ Controller

– The Digital Output Timing Signals section of Chapter 4, Digital Input/Output and PFI

• Triggering Modes—The cDAQ controller supports different trigger modes, such as start trigger, reference trigger, and pause trigger with analog, digital, or software sources. Refer to the following sections for more information:

– The Analog Input Triggering Signals section of Chapter 2, Analog Input

– The Analog Output Triggering Signals section of Chapter 3, Analog Output

– The Digital Input Triggering Signals section of Chapter 4, Digital Input/Output

and PFI

– The Digital Output Triggering Signals section of Chapter 4, Digital Input/Output

and PFI

• Independent Data Streams—The cDAQ controller supports seven independent high-speed data streams, which allow for up to seven simultaneous hardware-timed tasks, such as analog input, analog output, buffered counter/timers, and hardware-timed digital input/output.

• PFI Signals—The PFI signals provide access to advanced features such as triggering, synchronization, and counter/timers. You can also enable a programmable debouncing filter on each PFI signal that, when enabled, samples the input on each rising edge of a filter clock. PFI signals are available through parallel digital input and output modules installed in up to two controller slots. Refer to the PFI section of Chapter 4, Digital Input/Output

and PFI, for more information.

• Flexible Counter/Timers—The cDAQ controller includes four general-purpose 32-bit counter/timers that can be used to count edges, measure pulse-widths, measure periods and frequencies, and perform position measurements (encoding). In addition, the counter/timers can generate pulses, pulse trains, and square waves with adjustable frequencies. You can access the counter inputs and outputs using parallel digital modules installed in up to two slots. Refer to Chapter 5, Counters, for more information.

Processor and Ports

Refer to the specifications document for your cDAQ controller for information about the processor on the cDAQ controller. Refer to the cDAQ Controller Features section for information about using the various ports on the cDAQ controller.

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Page 57

Analog Input

To perform analog input measurements, insert a supported analog input C Series module into any slot on the cDAQ controller. The measurement specifications, such as number of channels, channel configuration, sample rate, and gain, are determined by the type of C Series module used. For more information and wiring diagrams, refer to the documentation included with your C Series modules.

The cDAQ controller has three AI timing engines, which means that three analog input tasks can be running at a time on a controller. An analog input task can include channels from multiple analog input modules. However, channels from a single module cannot be used in multiple tasks.

Multiple timing engines allow the cDAQ controller to run up to three analog input tasks simultaneously, each using independent timing and triggering configurations. The three AI timing engines are ai, te0, and te1.

Analog Input Triggering Signals

A trigger is a signal that causes an action, such as starting or stopping the acquisition of data. When you configure a trigger, you must decide how you want to produce the trigger and the action you want the trigger to cause. The cDAQ controller supports internal software triggering.

Three triggers are available: Start Trigger, Reference Trigger, and Pause Trigger. An analog or digital trigger can initiate these three trigger actions. Up to two C Series parallel digital input modules can be used in any controller slot to supply a digital trigger. To find your module triggering options, refer to the documentation included with your C Series modules. For more information about using digital modules for triggering, refer to Chapter 4, Digital Input/Output

and PFI.

Refer to the AI Start Trigger Signal, AI Reference Trigger Signal, and AI Pause Trigger Signal sections for more information about the analog input trigger signals.

Analog Input Timing Signals

The cDAQ controller features the following analog input timing signals:

• AI Sample Clock Signal*

• AI Sample Clock Timebase Signal

• AI Start Trigger Signal*

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Chapter 2 Analog Input

• AI Reference Trigger Signal*

• AI Pause Trigger Signal*

Signals with an * support digital filtering. Refer to the PFI Filters section of Chapter 4, Digital

Input/Output and PFI, for more information.

Refer to the AI Convert Clock Signal Behavior For Analog Input Modules section for AI Convert Clock signals and the cDAQ controller.

AI Sample Clock Signal

A sample consists of one reading from each channel in the AI task. Sample Clock signals the start of a sample of all analog input channels in the task. Sample Clock can be generated from external or internal sources as shown in Figure 2-1.

Figure 2-1. AI Sample Clock Timing Options

PFI

Analog Comparison Event

PFI

Analog Comparison

Event

20 MHz Timebase

80 MHz Timebase

100 kHz Timebase

Ctr n Internal Output

Sigma-Delta Module Internal Output

AI Sample Clock

Timebase

Programmable

Clock

Divider

AI Sample Cloc

Routing the Sample Clock to an Output Terminal

You can route Sample Clock to any output PFI terminal. Sample Clock is an active high pulse by default.

AI Sample Clock Timebase Signal

The AI Sample Clock Timebase signal is divided down to provide a source for Sample Clock. AI Sample Clock Timebase can be generated from external or internal sources. AI Sample Clock Timebase is not available as an output from the controller.

AI Convert Clock Signal Behavior For Analog Input Modules

Refer to the Scanned Modules, Simultaneous Sample-and-Hold Modules, Sigma-Delta Modules, and Slow Sample Rate Modules sections for information about the AI Convert Clock signal and C Series analog input modules.

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Scanned Modules

Scanned C Series analog input modules contain a single ADC and a multiplexer to select between multiple input channels. When the cDAQ Module Interface receives a Sample Clock pulse, it begins generating a Convert Clock for each scanned module in the current task. Each Convert Clock signals the acquisition of a single channel from that module. The Convert Clock rate depends on the module being used, the number of channels used on that module, and the system Sample Clock rate.

The driver chooses the fastest conversion rate possible based on the speed of the ADC for each module and adds 10 μs of padding between each channel to allow for adequate settling time. This scheme enables the channels to approximate simultaneous sampling. If the AI Sample Clock rate is too fast to allow for 10 μs of padding, NI-DAQmx selects a conversion rate that spaces the AI Convert Clock pulses evenly throughout the sample. NI-DAQmx uses the same amount of padding for all the modules in the task. To explicitly specify the conversion rate, use the ActiveDevs and AI Convert Clock Rate properties using the DAQmx Timing property node or functions.

Simultaneous Sample-and-Hold Modules

Simultaneous sample-and-hold (SSH) C Series analog input modules contain multiple ADCs or circuitry that allows all the input channels to be sampled at the same time. These modules sample their inputs on every Sample Clock pulse.

Sigma-Delta Modules

Sigma-delta C Series analog input modules function much like SSH modules, but use ADCs that require a high-frequency oversample clock to produce accurate, synchronized data. Some sigma-delta modules in the cDAQ controller automatically share a single oversample clock to synchronize data from all the modules that support an external oversample clock timebase when they all share the same task. (DSA modules are an example). The cDAQ controller supports a maximum of two synchronization pulse signals configured for your system. This limits the system to two tasks with different oversample clock timebases.

The oversample clock is used as the AI Sample Clock Timebase. While most modules supply a common oversample clock frequency (12.8 MHz), some modules, such as the NI 9234, supply a different frequency. When sigma-delta modules with different oversample clock frequencies are used in an analog input task, the AI Sample Clock Timebase can use any of the available frequencies; by default, the fastest available is used. The sampling rate of all modules in the system is an integer divisor of the frequency of the AI Sample Clock Timebase.

When one or more sigma-delta modules are in an analog input task, the sigma-delta modules also provide the signal used as the AI Sample Clock. This signal is used to cause analog-to-digital conversion for other modules in the system, just as the AI Sample Clock does when a sigma-delta module is not being used.

When sigma-delta modules are in an AI task, the controller automatically issues a synchronization pulse to each sigma-delta module that resets their ADCs at the same time.

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Chapter 2 Analog Input

Because of the filtering used in sigma-delta ADCs, these modules usually exhibit a fixed input delay relative to non-sigma-delta modules in the system. This input delay is specified in the C Series module documentation.

Slow Sample Rate Modules

Some C Series analog input modules are specifically designed for measuring signals that vary slowly, such as temperature. Because of their slow rate, it is not appropriate for these modules to constrain the AI Sample Clock to operate at or slower than their maximum rate. When using such a module in the cDAQ controller, the maximum Sample Clock rate can run faster than the maximum rate for the module. When operating at a rate faster than these slow rate modules can support, the slow rate module returns the same point repeatedly, until a new conversion completes. In a hardware-timed task, the first point is acquired when the task is committed. The second point is acquired after the start trigger as shown in Figure 2-2.

Figure 2-2. Sample Clock Timing Example

StartTrigger

1st A/D Conversion 2nd A/D Conversion 3rd A/D Conversion

Data from

A/D Conversion

(Slow Module)

SampleClock

Data Returned

to AI Task

AA ABB BC

For example, if running an AI task at 1 kHz using a module with a maximum rate of 10 Hz, the slow module returns 100 samples of the first point, followed by 100 samples of the second point, etc. Other modules in the task will return 1,000 new data points per second, which is normal. When performing a single-point acquisition, no points are repeated. To avoid this behavior, use multiple AI timing engines, and assign slow sample rate modules to a task w ith a ra te at or s lower than their maximum rate.

Refer to the C Series Support in NI-DAQmx document by going to the Info Code

rdcdaq.

ni.com/info and entering

AI Start Trigger Signal

Use the Start Trigger signal to begin a measurement acquisition. A measurement acquisition consists of one or more samples. If you do not use triggers, begin a measurement with a software command. Once the acquisition begins, configure the acquisition to stop in one of the following ways:

• When a certain number of points has been sampled (in finite mode)

• After a hardware reference trigger (in finite mode)

• With a software command (in continuous mode)

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An acquisition that uses a start trigger (but not a reference trigger) is sometimes referred to as a posttriggered acquisition. That is, samples are measured only after the trigger.

When you are using an internal sample clock, you can specify a default delay from the start trigger to the first sample.

Using a Digital Source

To use the Start Trigger signal with a digital source, specify a source and a rising or falling edge. Use the following signals as the source:

• Any PFI terminal

• Counter n Internal Output

The source also can be one of several other internal signals on your cDAQ controller. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event. When you use an analog trigger source for Start Trigger, the acquisition begins on the first rising edge of the Analog Comparison Event signal.

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Routing AI Start Trigger to an Output Terminal

You can route the Start Trigger signal to any output PFI terminal. The output is an active high pulse.

AI Reference Trigger Signal

Use Reference Trigger to stop a measurement acquisition. To use a reference trigger, specify a buffer of finite size and a number of pretrigger samples (samples that occur before the reference trigger). The number of posttrigger samples (samples that occur after the reference trigger) desired is the buffer size minus the number of pretrigger samples.

Once the acquisition begins, the cDAQ controller writes samples to the buffer. After the cDAQ controller captures the specified number of pretrigger samples, the cDAQ controller begins to look for the reference trigger condition. If the reference trigger condition occurs before the cDAQ controller captures the specified number of pretrigger samples, the controller ignores the condition.

If the buffer becomes full, the cDAQ controller continuously discards the oldest samples in the buffer to make space for the next sample. This data can be accessed (with some limitations) before the cDAQ controller discards it. Refer to the KnowledgeBase document, Can a

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Chapter 2 Analog Input

Pretriggered Acquisition be Continuous?, for more information. To access this KnowledgeBase,

ni.com/info and enter the Info Code rdcanq.

go to

When the reference trigger occurs, the cDAQ controller continues to write samples to the buffer until the buffer contains the number of posttrigger samples desired. Figure 2-3 shows the final buffer.

Figure 2-3. Reference Trigger Final Buffer

Reference Trigger

Pretrigger Samples

Complete Buffer

Posttrigger Samples

Using a Digital Source

To use Reference Trigger with a digital source, specify a source and a rising or falling edge. Either PFI or one of several internal signals on the cDAQ controller can provide the source. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event.

When you use an analog trigger source, the acquisition stops on the first rising or falling edge of the Analog Comparison Event signal, depending on the trigger properties.

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Routing the Reference Trigger Signal to an Output Terminal

You can route Reference Trigger to any output PFI terminal. Reference Trigger is active high by default.

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AI Pause Trigger Signal

You can use the Pause Trigger to pause and resume a measurement acquisition. The internal sample clock pauses while the external trigger signal is active and resumes when the signal is inactive. You can program the active level of the pause trigger to be high or low.

Using a Digital Source

To use the Pause Trigger, specify a source and a polarity. The source can be either from PFI or one of several other internal signals on your cDAQ controller. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event.

When you use an analog trigger source, the internal sample clock pauses when the Analog Comparison Event signal is low and resumes when the signal goes high (or vice versa).

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Note Pause triggers are only sensitive to the level of the source, not the edge.

Getting Started with AI Applications in Software

You can use the cDAQ controller in the following analog input applications:

• Single-point acquisition

• Finite acquisition

• Continuous acquisition

For more information about programming analog input applications and triggers in software, refer to the NI-DAQmx Help or the LabVIEW Help for more information.

Page 64

Analog Output

To generate analog output, insert an analog output C Series module in any slot on the cDAQ controller. The generation specifications, such as the number of channels, channel configuration, update rate, and output range, are determined by the type of C Series module used. For more information, refer to the documentation included with your C Series module(s).

On a single analog output C Series module, you can assign any number of channels to either a hardware-timed task or a software-timed (single-point) task. However, you cannot assign some channels to a hardware-timed task and other channels (on the same module) to a software-timed task.

Any hardware-timed task or software-timed task can have channels from multiple modules in the same controller.

Analog Output Data Generation Methods

When performing an analog output operation, you either can perform software-timed or hardware-timed generations. Hardware-timed generations must be buffered.

Software-Timed Generations

With a software-timed generation, software controls the rate at which data is generated. Software sends a separate command to the hardware to initiate each DAC conversion. In NI-DAQmx, software-timed generations are referred to as on-demand timing. Software-timed generations are also referred to as immediate or static operations. They are typically used for writing out a single value, such as a constant DC voltage.

The following considerations apply to software-timed generations:

• If any AO channel on a module is used in a hardware-timed (waveform) task, no channels on that module can be used in a software-timed task.

• You can configure software-timed generations to simultaneously update.

• Only one simultaneous update task can run at a time.

• A hardware-timed AO task and a simultaneous update AO task cannot run at the same time.

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Chapter 3 Analog Output

Hardware-Timed Generations

With a hardware-timed generation, a digital hardware signal controls the rate of the generation. This signal can be generated internally on the controller or provided externally.

Hardware-timed generations have several advantages over software-timed acquisitions:

• The time between samples can be much shorter.

• The timing between samples is deterministic.

• Hardware-timed acquisitions can use hardware triggering.

Hardware-timed AO operations on the cDAQ controller must be buffered.

Buffered Analog Output

A buffer is a temporary storage in computer memory for generated samples. In a buffered generation, data is moved from a host buffer to the cDAQ controller onboard FIFO before it is written to the C Series modules.

One property of buffered I/O operations is sample mode. The sample mode can be either finite or continuous:

• Finite—Finite sample mode generation refers to the generation of a specific, predetermined number of data samples. After the specified number of samples is written out, the generation stops.

• Continuous—Continuous generation refers to the generation of an unspecified number of samples. Instead of generating a set number of data samples and stopping, a continuous generation continues until you stop the operation. There are three different continuous generation modes that control how the data is written. These modes are regeneration, onboard regeneration, and non-regeneration:

– In regeneration mode, you define a buffer in host memory. The data from the buffer is

continually downloaded to the FIFO to be written out. New data can be written to the host buffer at any time without disrupting the output. There is no limitation on the number of waveform channels supported by regeneration mode.

– With onboard regeneration, the entire buffer is downloaded to the FIFO and

regenerated from there. After the data is downloaded, new data cannot be written to the FIFO. To use onboard regeneration, the entire buffer must fit wi thi n the FIFO siz e. The advantage of using onboard regeneration is that it does not require communication with the main host memory once the operation is started, which prevents problems that may occur due to excessive bus traffic or operating system latency. There is a limit of 16 waveform channels for onboard regeneration.

– With non-regeneration, old data is not r epeated. N ew data must continually be written

to the buffer. If the program does not write new data to the buffer at a fast enough rate to keep up with the generation, the buffer underflows and causes an error. There is no limitation on the number of waveform channels supported by non-regeneration.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Programmable

Clock

Divider

AO Sample Clock

Timebase

PFI

Analog Comparison Event

Ctr

Internal Output

AO Sample Clock

Analog Comparison

Event

20 MHz Timebase

80 MHz Timebase

PFI

100 kHz Timebase

Analog Output Triggering Signals

Analog output supports two different triggering actions: AO Start Trigger and AO Pause Trigger.

An analog or digital trigger can initiate these actions. Up to two C Series parallel digital input modules can be used in any controller slot to supply a digital trigger. An analog trigger can be supplied by some C Series analog modules.

Refer to the AO Start Trigger Signal and AO Pause Trigger Signal sections for more information about the analog output trigger signals.

Analog Output Timing Signals

The cDAQ controller features the following AO (waveform generation) timing signals:

• AO Sample Clock Signal*

• AO Sample Clock Timebase Signal

• AO Start Trigger Signal*

• AO Pause Trigger Signal*

Signals with an * support digital filtering. Refer to the PFI Filters section of Chapter 4, Digital

Input/Output and PFI, for more information.

AO Sample Clock Signal

The AO sample clock (ao/SampleClock) signals when all the analog output channels in the task update. AO Sample Clock can be generated from external or internal sources as shown in Figure 3-1.

Figure 3-1. Analog Output Timing Options

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Chapter 3 Analog Output

Routing AO Sample Clock to an Output Terminal

You can route AO Sample Clock to any output PFI terminal. AO Sample Clock is active high by default.

AO Sample Clock Timebase Signal

The AO Sample Clock Timebase (ao/SampleClockTimebase) signal is divided down to provide a source for AO Sample Clock. AO Sample Clock Timebase can be generated from external or internal sources, and is not available as an output from the controller.

AO Start Trigger Signal

Use the AO Start Trigger (ao/StartTrigger) signal to initiate a waveform generation. If you do not use triggers, you can begin a generation with a software command. If you are using an internal sample clock, you can specify a delay from the start trigger to the first sample. For more information, refer to the NI-DAQmx Help.

Using a Digital Source

To use AO Start Trigger, specify a source and a rising or falling edge. The source can be one of the following signals:

• A pulse initiated by host software

• Any PFI terminal

• AI Reference Trigger

• AI Start Trigger

The source also can be one of several internal signals on the cDAQ controller. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

You also can specify whether the waveform generation begins on the rising edge or falling edge of AO Start Trigger.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event, depending on the trigger properties.

When you use an analog trigger source, the waveform generation begins on the first rising or falling edge of the Analog Comparison Event signal, depending on the trigger properties. The analog trigger circuit must be configured by a simultaneously running analog input task.

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

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Pause Trigger

Sample Clock

Routing AO Start Trigger Signal to an Output Terminal

You can route AO Start Trigger to any output PFI terminal. The output is an active high pulse.

AO Pause Trigger Signal

Use the AO Pause Trigger signal (ao/PauseTrigger) to mask off samples in a DAQ sequence. When AO Pause Trigger is active, no samples occur, but AO Pause Trigger does not stop a sample that is in progress. The pause does not take effect until the beginning of the next sample.

When you generate analog output signals, the generation pauses as soon as the pause trigger is asserted. If the source of the sample clock is the onboard clock, the generation resumes as soon as the pause trigger is deasserted, as shown in Figure 3-2.

Figure 3-2. AO Pause Trigger with the Onboard Clock Source

Pause Trigger

Sample Clock

If you are using any signal other than the onboard clock as the source of the sample clock, the generation resumes as soon as the pause trigger is deasserted and another edge of the sample clock is received, as shown in Figure 3-3.

Figure 3-3. AO Pause Trigger with Other Signal Source

Using a Digital Source

To use AO Pause Trigger, specify a source and a polarity. The source can be a PFI signal or one of several other internal signals on the cDAQ controller.

You also can specify whether the samples are paused when AO Pause Trigger is at a logic high or low level. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

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Chapter 3 Analog Output

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event, depending on the trigger properties.

When you use an analog trigger source, the samples are paused when the Analog Comparison Event signal is at a high or low level, depending on the trigger properties. The analog trigger circuit must be configured by a simultaneously running analog input task.

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Minimizing Glitches on the Output Signal

When you use a DAC to generate a waveform, you may observe glitches on the output signal. These glitches are normal. When a DAC switches from one voltage to another, it produces glitches due to released charges. The largest glitches occur when the most significant bit of the DAC code changes. You can build a lowpass deglitching filter to remove some of these glitches, depending on the frequency and nature of the output signal. Go to information about minimizing glitches.

ni.com/support for more

Getting Started with AO Applications in Software

You can use the cDAQ controller in the following analog output applications:

• Single-point (on-demand) generation

• Finite generation

• Continuous generation

• Waveform generation

For more information about programming analog output applications and triggers in software, refer the LabVIEW Help or to the NI-DAQmx Help.

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Digital Input/Output and PFI

This chapter describes the digital input/output (DIO) and Programmable Function Interface (PFI) functionality available on the cDAQ controller.

Digital Input/Output

To use digital I/O, insert a digital I/O C Series module into any slot on the cDAQ controller. The I/O specifications, such as number of lines, logic levels, update rate, and line direction, are determined by the type of C Series module used. For more information, refer to the documentation included with your C Series module(s).

Serial DIO versus Parallel DIO Modules

Serial digital modules have more than eight lines of digital input/output. They can be used in any controller slot and can perform the following tasks:

• Software-timed and hardware-timed digital input/output tasks

Parallel digital modules can be used in any controller slot and can perform the following tasks:

• Software-timed and hardware-timed digital input/output tasks

• Counter/timer tasks (can be used in up to two slots)

• Accessing PFI signal tasks (can be used in up to two slots)

• Filter digital input signals

Software-timed and hardware-timed digital input/output tasks have the following restrictions:

• You cannot use parallel and serial modules together on the same hardware-timed task.

• You cannot use serial modules for triggering.

• You cannot do both static and timed tasks at the same time on a single serial module.

• You can only do hardware timing in one direction at a time o n a serial bidirectional module.

To determine the capability of digital modules supported by the cDAQ controller, refer to the C Series Support in NI-DAQmx document by going to Code rdcdaq.

ni.com/info and entering the Info

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Chapter 4 Digital Input/Output and PFI

Static DIO

Each of the DIO lines can be used as a static DI or DO line. You can use static DIO lines to monitor or control digital signals on some C Series modules. Each DIO line can be individually configured as a digital input (DI) or digital output (DO), if the C Series module being used allows such configuration.

All samples of static DI lines and updates of static DO lines are software-timed.

Digital Input

You can acquire digital waveforms using either parallel or serial digital modules. The DI waveform acquisition FIFO stores the digital samples. The cDAQ controller samples the DIO lines on each rising or falling edge of the DI Sample Clock signal.

Digital Input Triggering Signals

Three triggers are available: Start Trigger, Reference Trigger, and Pause Trigger. An analog or digital trigger can initiate these three trigger actions. Up to two C Series parallel digital input modules can be used in any controller slot to supply a digital trigger. To find your module triggering options, refer to the documentation included with your C Series modules. For more information about using analog modules for triggering, refer to the Analog Input Triggering

Signals section of Chapter 2, Analog Input, and the Analog Output Triggering Signals section of

Chapter 3, Analog Output.

Refer to the DI Start Trigger Signal, DI Reference Trigger Signal, and DI Pause Trigger Signal sections for more information about the digital input trigger signals.

Digital Input Timing Signals

The cDAQ controller features the following digital input timing signals:

• DI Sample Clock Signal*

• DI Sample Clock Timebase Signal

• DI Start Trigger Signal*

• DI Reference Trigger Signal*

• DI Pause Trigger Signal*

Signals with an * support digital filtering. Refer to the PFI Filters section for more information.

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Programmable

Clock

Divider

DI Sample Clock

Timebase

PFI

Analog Comparison Event

Ctr

Internal Output

DI Sample Clock

Sigma-Delta Module Internal Output

Analog Comparison

Event

20 MHz Timebase

80 MHz Timebase

PFI

100 kHz Timebase

DI Sample Clock Signal

Use the DI Sample Clock (di/SampleClock) signal to sample digital I/O on any slot using parallel digital modules, and store the result in the DI waveform acquisition FIFO. If the cDAQ controller receives a DI Sample Clock signal when the FIFO is full, it reports an overflow error to the host software.

A sample consists of one reading from each channel in the DI task. DI Sample Clock signals the start of a sample of all digital input channels in the task. DI Sample Clock can be generated from external or internal sources as shown in Figure 4-1.

Figure 4-1. DI Sample Clock Timing Options

Routing DI Sample Clock to an Output Terminal

You can route DI Sample Clock to any output PFI terminal. Sample Clock is an active high pulse by default.

DI Sample Clock Timebase Signal

The DI Sample Clock Timebase (di/SampleClockTimebase) signal is divided down to provide a source for DI Sample Clock. DI Sample Clock Timebase can be generated from external or internal sources. DI Sample Clock Timebase is not available as an output from the controller.

Using an Internal Source

To use DI Sample Clock with an internal source, specify the signal source and the polarity of the signal. Use the following signals as the source:

• AI Sample Clock

• AO Sample Clock

• Counter n Internal Output

• Frequency Output

• DI Change Detection Output

Several other internal signals can be routed to DI Sample Clock. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

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Using an External Source

You can route the following signals as DI Sample Clock:

• Any PFI terminal

• Analog Comparison Event (an analog trigger)

You can sample data on the rising or falling edge of DI Sample Clock.

DI Start Trigger Signal

Use the DI Start Trigger (di/StartTrigger) signal to begin a measurement acquisition. A measurement acquisition consists of one or more samples. If you do not use triggers, begin a measurement with a software command. Once the acquisition begins, configure the acquisition to stop in one of the following ways:

• When a certain number of points has been sampled (in finite mode)

• After a hardware reference trigger (in finite mode)

• With a software command (in continuous mode)

An acquisition that uses a start trigger (but not a reference trigger) is sometimes referred to as a posttriggered acquisition. That is, samples are measured only after the trigger.

When you are using an internal sample clock, you can specify a delay from the start trigger to the first sample.

Using a Digital Source

To use DI Start Trigger with a digital source, specify a source and a rising or falling edge. Use the following signals as the source:

• Any PFI terminal

• Counter n Internal Output

The source also can be one of several other internal signals on the cDAQ controller. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event. When you use an analog trigger source for DI Start Trigger, the acquisition begins on the first rising edge of the Analog Comparison Event signal.

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Routing DI Start Trigger to an Output Terminal

You can route DI Start Trigger to any output PFI terminal. The output is an active high pulse.

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DI Reference Trigger Signal

Use a reference trigger (di/ReferenceTrigger) signal to stop a measurement acquisition. To use a reference trigger, specify a buffer of finite size and a number of pretrigger samples (samples that occur before the reference trigger). The number of posttrigger samples (samples that occur after the reference trigger) desired is the buffer size minus the number of pretrigger samples.

Once the acquisition begins, the cDAQ controller writes samples to the buffer. After the cDAQ controller captures the specified number of pretrigger samples, the controller begins to look for the reference trigger condition. If the reference trigger condition occurs before the cDAQ controller captures the specified number of pretrigger samples, the controller ignores the condition.

ni.com/info and enter the Info Code rdcanq.

go to

When the reference trigger occurs, the cDAQ controller continues to write samples to the buffer until the buffer contains the number of posttrigger samples desired. Figure 4-2 shows the final buffer.

Figure 4-2. Reference Trigger Final Buffer

Reference Trigger

Pretrigger Samples

Complete Buffer

Posttrigger Samples

Using a Digital Source

To use DI Reference Trigger with a digital source, specify a source and a rising or falling edge. Either PFI or one of several internal signals on the cDAQ controller can provide the source. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event.

When you use an analog trigger source, the acquisition stops on the first rising or falling edge of the Analog Comparison Event signal, depending on the trigger properties.

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Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Routing DI Reference Trigger Signal to an Output Terminal

You can route DI Reference Trigger to any output PFI terminal. Reference Trigger is active high by default.

DI Pause Trigger Signal

You can use the DI Pause Trigger (di/PauseTrigger) signal to pause and resume a measurement acquisition. The internal sample clock pauses while the external trigger signal is active and resumes when the signal is inactive. You can program the active level of the pause trigger to be high or low.

Using a Digital Source

To use DI Pause Trigger, specify a source and a polarity. The source can be either from PFI or one of several other internal signals on your cDAQ controller. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event.

When you use an analog trigger source, the internal sample clock pauses when the Analog Comparison Event signal is low and resumes when the signal goes high (or vice versa).

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Note Pause triggers are only sensitive to the level of the source, not the edge.

Digital Input Filters

When performing a hardware-timed task, you can enable a programmable debouncing filter on the digital input lines of a parallel DIO module. All lines on a module must share the same filter configuration. When the filter is enabled, the controller samples the inputs with a user-configured Filter Clock derived from the controller timebase. This is used to determine whether a pulse is propagated to the rest of the system. However, the filter also introduces jitter onto the input signal.

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In NI-DAQmx, the filter is programmed by setting the minimum pulse width, Tp1, that will pass the filter, and is selectable in 25 ns increments. The appropriate Filter Clock is selected by the driver. Pulses of length less than 1/2 Tp will be rejected, and the filtering behavior of lengths between 1/2 Tp and 1 Tp are not defined because they depend on the phase of the Filter Clock relative to the input signal.

Figure 4-3 shows an example of low-to-high transitions of the input signal. High-to-low transitions work similarly.

Assume that an input terminal has been low for a long time. The input terminal then changes from low to high, but glitches several times. When the filter clock has sampled the signal high on consecutive rising edges, the low-to-high transition is propagated to the rest of the circuit.

Figure 4-3. Filter Example

Digital Input P0.x

Filter Clock

Filtered Input

11 211 21

Getting Started with DI Applications in Software

You can use the cDAQ controller in the following digital input applications:

• Single-point acquisition

• Finite acquisition

• Continuous acquisition

Change Detection Event

The Change Detection Event is the signal generated when a change on the rising or falling edge lines is detected by the change detection task.

Routing Change Detection Event to an Output Terminal

You can route ChangeDetectionEvent to any output PFI terminal.

Change Detection Acquisition

You can configure lines on parallel digital modules to detect rising or falling edges. When one or more of these lines sees the edge specified for that line, the cDAQ controller samples all the lines in the task. The rising and falling edge lines do not necessarily have to be in the task.

Change detection acquisitions can be buffered or nonbuffered:

• Nonbuffered Change Detection Acquisition—In a nonbuffered acquisition, data is transferred from the cDAQ controller directly to a PC buffer.

Tp is a nominal value; the accuracy of the controller timebase and I/O distortion will affect this value.

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Chapter 4 Digital Input/Output and PFI

• Buffered Change Detection Acquisition—A buffer is a temporary storage in computer memory for acquired samples. In a buffered acquisition, data is stored in the cDAQ controller onboard FIFO then transferred to a PC buffer. Buffered acquisitions typically allow for much faster transfer rates than nonbuffered acquisitions because data accumulates and is transferred in blocks, rather than one sample at a time.

Digital Output

To generate digital output, insert a digital output C Series module in any slot on the cDAQ controller. The generation specifications, such as the number of channels, channel configuration, update rate, and output range, are determined by the type of C Series module used. For more information, refer to the documentation included with your C Series module(s).

With parallel digital output modules (formerly known as hardware-timed modules), you can do multiple software-timed tasks on a single module, as well as mix hardware-timed and software-timed digital output tasks on a single module. On serial digital output modules, (formerly known as static digital output modules), you cannot mix hardware-timed and software-timed tasks, but you can run multiple software-timed tasks.

You may have a hardware-timed task or a software-timed task include channels from multiple modules, but a hardware-timed task may not include a mix of channels from both parallel and serial modules.

Digital Output Data Generation Methods

When performing a digital output operation, you either can perform software-timed or hardware-timed generations. Hardware-timed generations must be buffered.

Software-Timed Generations

With a software-timed generation, software controls the rate at which data is generated. Software sends a separate command to the hardware to initiate each digital generation. In NI-DAQmx, software-timed generations are referred to as on-demand timing. Software-timed generations are also referred to as immediate or static operations. They are typically used for writing out a single value.

For software-timed generations, if any DO channel on a serial digital module is used in a hardware-timed task, no channels on that module can be used in a software-timed task.

Hardware-Timed Generations

With a hardware-timed generation, a digital hardware signal controls the rate of the generation. This signal can be generated internally on the controller or provided externally.

Hardware-timed generations have several advantages over software-timed acquisitions:

• The time between samples can be much shorter.

• The timing between samples is deterministic.

• Hardware-timed acquisitions can use hardware triggering.

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Hardware-timed DO operations on the cDAQ controller must be buffered.

Buffered Digital Output

One property of buffered I/O operations is sample mode. The sample mode can be either finite or continuous:

• Finite—Finite sample mode generation refers to the generation of a specific, predetermined number of data samples. After the specified number of samples is written out, the generation stops.

– In regeneration mode, you define a buffer in host memory. The data from the buffer is

continually downloaded to the FIFO to be written out. New data can be written to the host buffer at any time without disrupting the output.

– With onboard regeneration, the entire buffer is downloaded to the FIFO and

– With non-regeneration, old data is not r epeated. N ew data must continually be written

to the buffer. If the program does not write new data to the buffer at a fast enough rate to keep up with the generation, the buffer underflows and causes an error.

Digital Output Triggering Signals

Digital output supports two different triggering actions: DO Start Trigger and DO Pause Trigger.

A digital or analog trigger can initiate these actions. Any PFI terminal can supply a digital trigger, and some C Series analog modules can supply an analog trigger. For more information, refer to the documentation included with your C Series module(s).

Refer to the DO Start Trigger Signal and DO Pause Trigger Signal sections for more information about the digital output trigger signals.

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Chapter 4 Digital Input/Output and PFI

Digital Output Timing Signals

The cDAQ controller features the following DO timing signals:

• DO Sample Clock Signal*

• DO Sample Clock Timebase Signal

• DO Start Trigger Signal*

• DO Pause Trigger Signal*

Signals with an * support digital filtering. Refer to the PFI Filters section for more information.

DO Sample Clock Signal

The DO Sample Clock (do/SampleClock) signals when all the digital output channels in the task update. DO Sample Clock can be generated from external or internal sources as shown in Figure 4-4.

Figure 4-4. Digital Output Timing Options

PFI

Analog Comparison

Event

20 MHz Timebase

80 MHz Timebase

100 kHz Timebase

DO Sample Clock

Timebase

Analog Comparison Event

Internal Output

Ctr

Programmable

Clock

Divider

DO Sample Clock

Routing DO Sample Clock to an Output Terminal

You can route DO Sample Clock to any output PFI terminal. DO Sample Clock is active high by default.

DO Sample Clock Timebase Signal

The DO Sample Clock Timebase (do/SampleClockTimebase) signal is divided down to provide a source for DO Sample Clock. DO Sample Clock Timebase can be generated from external or internal sources, and is not available as an output from the controller.

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DO Start Trigger Signal

Use the DO Start Trigger (do/StartTrigger) signal to initiate a waveform generation. If you do not use triggers, you can begin a generation with a software command. If you are using an internal sample clock, you can specify a delay from the start trigger to the first sample. For more information, refer to the NI-DAQmx Help.

Using a Digital Source

To use DO Start Trigger, specify a source and a rising or falling edge. The source can be one of the following signals:

• A pulse initiated by host software

• Any PFI terminal

• AI Reference Trigger

• AI Start Trigger

The source also can be one of several internal signals on the cDAQ controller. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

You also can specify whether the waveform generation begins on the rising edge or falling edge of DO Start Trigger.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event, depending on the trigger properties.

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

Routing DO Start Trigger Signal to an Output Terminal

You can route DO Start Trigger to any output PFI terminal. The output is an active high pulse.

DO Pause Trigger Signal

Use the DO Pause Trigger signal (do/PauseTrigger) to mask off samples in a DAQ sequence. When DO Pause Trigger is active, no samples occur, but DO Pause Trigger does not stop a sample that is in progress. The pause does not take effect until the beginning of the next sample.

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Chapter 4 Digital Input/Output and PFI

Pause Trigger

Sample Clock

When you generate digital output signals, the generation pauses as soon as the pause trigger is asserted. If the source of the sample clock is the onboard clock, the generation resumes as soon as the pause trigger is deasserted, as shown in Figure 4-5.

Figure 4-5. DO Pause Trigger with the Onboard Clock Source

Pause Trigger

Sample Clock

Figure 4-6. DO Pause Trigger with Other Signal Source

Using a Digital Source

To use DO Pause Trigger, specify a source and a polarity. The source can be a PFI signal or one of several other internal signals on the cDAQ controller.

You also can specify whether the samples are paused when DO Pause Trigger is at a logic high or low level. Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event, depending on the trigger properties.

Note Depending on the C Series module capabilities, you may need two modules

to utilize analog triggering.

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Getting Started with DO Applications in Software

You can use the cDAQ controller in the following digital output applications:

• Single-point (on-demand) generation

• Finite generation

• Continuous generation

For more information about programming digital output applications and triggers in software, refer the LabVIEW Help or to the NI-DAQmx Help.

Digital Input/Output Configuration for NI 9401

When you change the configuration of lines on a NI 9401 digital module between input and output, NI-DAQmx temporarily reserves all of the lines on the module for communication to send the module a line configuration command. For this reason, you must reserve the task in advance through the DAQmx Control Task before any task has started. If another task or route is actively using the module, to avoid interfering with the other task, NI-DAQmx generates an error instead of sending the line configuration command. During the line configuration command, the output lines are maintained without glitching.

PFI

You can configure channels of a parallel digital module as Programmable Function Interface (PFI) terminals. The cDAQ controller also provides one terminal for PFI on its front panel. One or two digital modules can be used to access the cDAQ controller PFI terminal. You can use the the cDAQ controller PFI terminal to wake the controller from a low power state. You can drive a wake event with high logic-level signals. Refer to the specifications document for your cDAQ controller for DC input characteristics.

You can configure each PFI individually as the following:

• Timing input signal for AI, AO, DI, DO, or counter/timer functions

• Timing output signal from AI, AO, DI, DO, or counter/timer functions

PFI Filters

You can enable a programmable debouncing filter on each PFI signal. When the filter is enabled, the controller samples the inputs with a user-configured Filter Clock derived from the controller timebase. This is used to determine whether a pulse is propagated to the rest of the circuit. However, the filter also introduces jitter onto the PFI signal.

The following is an example of low-to-high transitions of the input signal. High-to-low transitions work similarly.

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Assume that an input terminal has been low for a long time. The input terminal then changes from low to high, but glitches several times. When the Filter Clock has sampled the signal high on N consecutive edges, the low-to-high transition is propagated to the rest of the circuit. The value of N depends on the filter setting, as shown in Table 4-1.

Table 4-1. Selectable PFI Filter Settings

Min Pulse

Filter

Setting

Filter Clock Jitter

Width

Pass

Max Pulse Width*

to Not Pass

112.5 ns

80 MHz 12.5 ns 112.5 ns 100 ns

(short)

6.4 μs

80 MHz 12.5 ns 6.4 μs 6.3875 μs

(medium)

2.56 ms

100 kHz 10 μs 2.56 ms 2.55 ms

(high)

Custom User-configurable 1 Filter

Clock

user

- (1 Filter Clock

user

period)

period

Pulse widths are nominal values; the accuracy of the controller timebase and I/O distortion will affect

these values.

On power up, the filters are disabled. Figure 4-7 shows an example of a low-to-high transition on an input that has a custom filter set to N = 5.

Figure 4-7. PFI Filter Example

PFI Terminal

Filter Clock

Filtered Input

12314123 45

Filtered input goes high when terminal is sampled high on five consecutive filter clocks.

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Counter 0

Counter 0 Source (Counter 0 Timebase)

Counter 0 Aux

Counter 0 HW Arm

Counter 0 A

Counter 0 B (Counter 0 Up_Down)

Counter 0 Z

Counter 0 Gate

Counter 0 Internal Output

Counter 0 TC

Input Selection Muxes

Frequency Generator

Frequency Output Timebase

Freq Out

Input Selection Muxes

Embedded Ctr0

FIFO

Counter 0 Sample Clock

Counters

The cDAQ controller has four general-purpose 32-bit counter/timers and one frequency generator. The general-purpose counter/timers can be used for many measurement and pulse generation applications. Figure 5-1 shows the cDAQ controller Counter 0 and the frequency generator. All four counters on the cDAQ controller are identical.

Figure 5-1. cDAQ Controller Counter 0 and Frequency Generator

Counters have eight input signals, although in most applications only a few inputs are used.

For information about connecting counter signals, refer to the Default Counter/Timer Routing section.

Each counter has a FIFO that can be used for buffered acquisition and generation. Each counter also contains an embedded counter (Embedded Ctrn) for use in what are traditionally two-counter measurements and generations. The embedded counters cannot be programmed independent of the main counter; signals from the embedded counters are not routable.

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Counter Timing Engine

Unlike analog input, analog output, digital input, and digital output, the cDAQ controller counters do not have the ability to divide down a timebase to produce an internal counter sample clock. For sample clocked operations, an external signal must be provided to supply a clock source. The source can be any of the following signals:

• AI Sample Clock

• AI Start Trigger

• AI Reference Trigger

• AO Sample Clock

• DI Sample Clock

• DI Start Trigger

• DO Sample Clock

•CTR n Internal Output

• Freq Out

• PFI

• Change Detection Event

• Analog Comparison Event

Not all timed counter operations require a sample clock. For example, a simple buffered pulse width measurement latches in data on each edge of a pulse. For this measurement, the measured signal determines when data is latched in. These operations are referred to as implicit timed operations. However, many of the same measurements can be clocked at an interval with a sample clock. These are referred to as sample clocked operations. Table 5-1 shows the different options for the different measurements.

Table 5-1. Counter Timing Measurements

Measurement

Implicit

Timing Support

Sample Clocked

Timing Support

Buffered Edge Count No Ye s

Buffered Pulse Width Ye s Yes

Buffered Pulse Ye s Yes

Buffered Semi-Period Ye s No

Buffered Frequency Ye s Yes

Buffered Period Ye s Yes

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Counter Armed

SOURCE

Counter Value105432

Table 5-1. Counter Timing Measurements (Continued)

Implicit

Measurement

Buffered Position No Ye s

Buffered Two-Signal Edge Separation Ye s Ye s

Timing Support

Sample Clocked

Timing Support

Counter Input Applications

The following sections list the various counter input applications available on the cDAQ controller:

• Counting Edges

• Pulse-Width Measurement

• Pulse Measurement

• Semi-Period Measurement

• Frequency Measurement

• Period Measurement

• Position Measurement

Counting Edges

In edge counting applications, the counter counts edges on its Source after the counter is armed. You can configure the counter to count rising or falling edges on its Source input. You also can control the direction of counting (up or down), as described in the Controlling the Direction of

Counting section. The counter values can be read on demand or with a sample clock.

Refer to the following sections for more information about edge counting options:

• Single Point (On-Demand) Edge Counting

• Buffered (Sample Clock) Edge Counting

Single Point (On-Demand) Edge Counting

With single point (on-demand) edge counting, the counter counts the number of edges on the Source input after the counter is armed. On-demand refers to the fact that software can read the counter contents at any time without disturbing the counting process. Figure 5-2 shows an example of single point edge counting.

Figure 5-2. Single Point (On-Demand) Edge Counting

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Chapter 5 Counters

Counter Armed

SOURCE

Pause Trigger

(Pause When Low)

Counter Value

100 5432

You also can use a pause trigger to pause (or gate) the counter. When the pause trigger is active, the counter ignores edges on its Source input. When the pause trigger is inactive, the counter counts edges normally.

You can route the pause trigger to the Gate input of the counter. You can configure the counter to pause counting when the pause trigger is high or when it is low. Figure 5-3 shows an example of on-demand edge counting with a pause trigger.

Figure 5-3. Single Point (On-Demand) Edge Counting with Pause Trigger

Buffered (Sample Clock) Edge Counting

With buffered edge counting (edge counting using a sample clock), the counter counts the number of edges on the Source input after the counter is armed. The value of the counter is sampled on each active edge of a sample clock and stored in the FIFO. The STC3 transfers the sampled values to host memory using a high-speed data stream.

The count values returned are the cumulative counts since the counter armed event. That is, the sample clock does not reset the counter. You can configure the counter to sample on the rising or falling edge of the sample clock.

Figure 5-4 shows an example of buffered edge counting. Notice that counting begins when the counter is armed, which occurs before the first active edge on Sample Clock.

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(Sample on Rising Edge)

Figure 5-4. Buffered (Sample Clock) Edge Counting

Counter Armed

Sample Clock

SOURCE

Counter Value

Buffer

10763 452

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Controlling the Direction of Counting

In edge counting applications, the counter can count up or down. You can configure the counter to do the following:

• Always count up

• Always count down

• Count up when the Counter 0 B input is high; count down when it is low

For information about connecting counter signals, refer to the Default Counter/Timer Routing section.

Pulse-Width Measurement

In pulse-width measurements, the counter measures the width of a pulse on its Gate input signal. You can configure the counter to measure the width of high pulses or low pulses on the Gate signal.

You can route an internal or external periodic clock signal (with a known period) to the Source input of the counter. The counter counts the number of rising (or falling) edges on the Source signal while the pulse on the Gate signal is active.

You can calculate the pulse width by multiplying the period of the Source signal by the number of edges returned by the counter.

A pulse-width measurement will be accurate even if the counter is armed while a pulse train is in progress. If a counter is armed while the pulse is in the active state, it will wait for the next transition to the active state to begin the measurement.

Refer to the following sections for more information about cDAQ controller pulse-width measurement options:

• Single Pulse-Width Measurement

• Implicit Buffered Pulse-Width Measurement

• Sample Clocked Buffered Pulse-Width Measurement

Single Pulse-Width Measurement

With single pulse-width measurement, the counter counts the number of edges on the Source input while the Gate input remains active. When the Gate input goes inactive, the counter stores the count in the FIFO and ignores other edges on the Gate and Source inputs. Software then reads the stored count.

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SOURCE

GATE

Counter Value

Latched Value

Figure 5-5 shows an example of a single pulse-width measurement.

Figure 5-5. Single Pulse-Width Measurement

Implicit Buffered Pulse-Width Measurement

An implicit buffered pulse-width measurement is s im il ar to single pulse-width measurement, but buffered pulse-width measurement takes measurements over multiple pulses.

The counter counts the number of edges on the Source input while the Gate input remains active. On each trailing edge of the Gate signal, the counter stores the count in the counter FIFO. The STC3 transfers the sampled values to host memory using a high-speed data stream.

Figure 5-6 shows an example of an implicit buffered pulse-width measurement.

Figure 5-6. Implicit Buffered Pulse-Width Measurement

GATE

SOURCE

Counter Value

Buffer

10 3

212

Sample Clocked Buffered Pulse-Width Measurement

A sample clocked buffered pulse-width measurement is similar to single pulse-width measurement, but buffered pulse-width measurement takes measurements over multiple pulses correlated to a sample clock.

The counter counts the number of edges on the Source input while the Gate input remains active. On each sample clock edge, the counter stores the count in the FIFO of the last pulse width to complete. The STC3 transfers the sampled values to host memory using a high-speed data stream.

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Pulse

Source

Sample Clock

Buffer

Figure 5-7 shows an example of a sample clocked buffered pulse-width measurement.

Figure 5-7. Sample Clocked Buffered Pulse-Width Measurement

Note If a pulse does not occur between sample clocks, an overrun error occurs.

For information about connecting counter signals, refer to the Default Counter/Timer Routing section.

Pulse Measurement

In pulse measurements, the counter measures the high and low time of a pulse on its Gate input signal after the counter is armed. A pulse is defined in terms of its high and low time, high and low ticks or frequency and duty cycle. This is similar to the pulse-width measurement, except that the inactive pulse is measured as well.

You can route an internal or external periodic clock signal (with a known period) to the Source input of the counter. The counter counts the number of rising (or falling) edges occurring on the Source input between two edges of the Gate signal.

You can calculate the high and low time of the Gate input by multiplying the period of the Source signal by the number of edges returned by the counter.

Refer to the following sections for more information about cDAQ controller pulse measurement options:

• Single Pulse Measurement

• Implicit Buffered Pulse Measurement

• Sample Clocked Buffered Pulse Measurement

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Chapter 5 Counters

Counter Armed

Gate

Source

710

Latched

Value

987654321564321

Single Pulse Measurement

Single (on-demand) pulse measurement is equivalent to two single pulse-width measurements on the high (H) and low (L) ticks of a pulse, as shown in Figure5-8.

Figure 5-8. Single (On-Demand) Pulse Measurement

Implicit Buffered Pulse Measurement

In an implicit buffered pulse measurement, on each edge of the Gate signal, the counter stores the count in the FIFO. The STC3 transfers the sampled values to host memory using a high-speed data stream.

The counter begins counting when it is armed. The arm usually occurs between edges on the Gate input but the counting does not start until the desired edge. You can select whether to read the high pulse or low pulse first using the StartingEdge property in NI-DAQmx.

Figure 5-9 shows an example of an implicit buffered pulse measurement.

Figure 5-9. Implicit Buffered Pulse Measurement

Counter Armed

Gate

Source

Buffer

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4 44 6 2

2 2

42 4

4 4

4 2

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Counter

Armed

Gate

Source

Sample

Clock

Buffer

Sample Clocked Buffered Pulse Measurement

A sample clocked buffered pulse measurement is similar to single pulse measurement, but a buffered pulse measurement takes measurements over multiple pulses correlated to a sample clock.

The counter performs a pulse measurement on the Gate. On each sample clock edge, the counter stores the high and low ticks in the FIFO of the last pulse to complete. The STC3 transfers the sampled values to host memory using a high-speed data stream.

Figure 5-10 shows an example of a sample clocked buffered pulse measurement.

Figure 5-10. Sample Clocked Buffered Pulse Measurement

Note If a pulse does not occur between sample clocks, an overrun error occurs.

For information about connecting counter signals, refer to the Default Counter/Timer Routing section.

Semi-Period Measurement

In semi-period measurements, the counter measures a semi-period on its Gate input signal after the counter is armed. A semi-period is the time between any two consecutive edges on the Gate input.

You can calculate the semi-period of the Gate input by multiplying the period of the Source signal by the number of edges returned by the counter.

Refer to the following sections for more information about semi-period measurement options:

• Single Semi-Period Measurement

• Implicit Buffered Semi-Period Measurement

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Chapter 5 Counters

1 2

SOURCE

GATE

Counter Value

Buffer

1 3

Counter

Armed

Starting

Edge

Refer to the Pulse versus Semi-Period Measurements section for information about the differences between semi-period measurement and pulse measurement.

Single Semi-Period Measurement

Single semi-period measurement is equivalent to single pulse-width measurement.

Implicit Buffered Semi-Period Measurement

In implicit buffered semi-period measurements, on each edge of the Gate signal, the counter stores the count in the FIFO. The STC3 transfers the sampled values to host memory using a high-speed data stream.

The counter begins counting when it is armed. The arm usually occurs between edges on the Gate input. You can select whether to read the first active low or active high semi period using the CI.SemiPeriod.StartingEdge property in NI-DAQmx.

Figure 5-11 shows an example of an implicit buffered semi-period measurement.

Figure 5-11. Implicit Buffered Semi-Period Measurement

For information about connecting counter signals, refer to the Default Counter/Timer Routing section.

Pulse versus Semi-Period Measurements

In hardware, pulse measurement and semi-period are the same measurement. Both measure the high and low times of a pulse. The functional difference between the two measurements is how the data is returned. In a semi-period measurement, each high or low time is considered one point of data and returned in units of seconds or ticks. In a pulse measurement, each pair of high and low times is considered one point of data and returned as a paired sample in units of frequency and duty cycle, high and low time or high and low ticks. When reading data, 10 points in a semi-period measurement will get an array of five high times and five low times. When you read 10 points in a pulse measurement, you get an array of 10 pairs of high and low times.

Also, pulse measurements support sample clock timing while semi-period measurements do not.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Gate

Source

123 … N

Single Period

Measurement

…

Period of fx =

Frequency of fx =

Interval Measured

Frequency Measurement

You can use the counters to measure frequency in several different ways. Refer to the following sections for information about cDAQ controller frequency measurement options:

• Low Frequency with One Counter

• High Frequency with Two Counters

• Large Range of Frequencies with Two Counters

• Sample Clocked Buffered Frequency Measurement

Low Frequency with One Counter

For low frequency measurements with one counter, you measure one period of your signal using a known timebase.

You can route the signal to measure (fx) to the Gate of a counter. You can route a known timebase (fk) to the Source of the counter. The known timebase can be an onboard timebase, such as 80 MHz Timebase, 20 MHz Timebase, or 100 kHz Timebase, or any other signal with a known rate.

You can configure the counter to measure one period of the gate signal. The frequency of fx is the inverse of the period. Figure 5-12 illustrates this method.

Figure 5-12. Low Frequency with One Counter

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Chapter 5 Counters

High Frequency with Two Counters

For high frequency measurements with two counters, you measure one pulse of a known width using your signal and derive the frequency of your signal from the result.

Note Counter 0 is always paired with Counter 1. Counter 2 is always paired with

Counter 3.

In this method, you route a pulse of known duration (T) to the Gate of a counter. You can generate the pulse using a second counter. You also can generate the pulse externally and connect it to a PFI terminal. You only need to use one counter if you generate the pulse externally.

Route the signal to measure (fx) to the Source of the counter. Configure the counter for a single pulse-width measurement. If you measure the width of pulse T to be N periods of fx, the frequency of fx is N/T.

Figure 5-13 illustrates this method. Another option is to measure the width of a known period instead of a known pulse.

Figure 5-13. High Frequency with Two Counters

Width of Pulse (T )

Pulse

Gate

Source

Pulse-Width

Measurement

Pulse

12… N

Width of

Frequency of fx =

Pulse

T =

Large Range of Frequencies with Two Counters

By using two counters, you can accurately measure a signal that might be high or low frequency. This technique is called reciprocal frequency measurement. When measuring a large range of frequencies with two counters, you generate a long pulse using the signal to measure. You then measure the long pulse with a known timebase. The cDAQ controller can measure this long pulse more accurately than the faster input signal.

Note Counter 0 is always paired with Counter 1. Counter 2 is always paired with

Counter 3.

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Source Out

Counter 0

Source

Gate

Out

Counter 1

Signal to

Measure (fx)

Signal of Known

Frequency (fk)

CTR_0_SOURCE

(Signal to Measure)

CTR_0_OUT

(CTR_1_GATE)

CTR_1_SOURCE

Interval

to Measure

0123 … N

You can route the signal to measure to the Source input of Counter 0, as shown in Figure 5-14. Assume this signal to measure has frequency fx. NI-DAQmx automatically configures Counter 0 to generate a single pulse that is the width of N periods of the source input signal.

Figure 5-14. Large Range of Frequencies with Two Counters

Next, route the Counter 0 Internal Output signal to the Gate input of Counter 1. You can route a signal of known frequency (fk) to the Counter 1 Source input. Configure Counter 1 to perform a single pulse-width measurement. Suppose the result is that the pulse width is J periods of the fk clock.

From Counter 0, the length of the pulse is N/fx. From Counter 1, the length of the same pulse is J/fk. Therefore, the frequency of fx is given by fx = fk *(N/J ).

Sample Clocked Buffered Frequency Measurement

Sample clocked buffered point frequency measurements can either be a single frequency measurement or an average between sample clocks. Use CI.Freq.EnableAveraging to set the behavior. For buffered frequency, the default is True.

A sample clocked buffered frequency measurement with CI.Freq.EnableAveraging set to True uses the embedded counter and a sample clock to perform a frequency measurement. For each sample clock period, the embedded counter counts the signal to measure (fx) and the primary counter counts the internal time-base of a known frequency (fk). Suppose T1 is the number of ticks of the unknown signal counted between sample clocks and T2 is the number of ticks counted of the known timebase as shown in Figure 5-15. The frequency measured is:

fx = fk * (T1/T2)

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Chapter 5 Counters

Figure 5-15. Sample Clocked Buffered Frequency Measurement (Averaging)

Counter Armed

S1 S2 S3

Gate

(fx)

Source

(fk)

Sample

Clock

Buffer

121

6106

T1 T2

17 210

When CI.Freq.EnableAveraging is set to false, the frequency measurement returns the frequency of the pulse just before the sample clock. This single measurement is a single frequency measurement and is not an average between clocks as shown in Figure 5-16.

Figure 5-16. Sample Clocked Buffered Frequency Measurement (Non-Averaging)

Counter Armed

Gate

T1 T2

1 2 1

Source

Sample

Clock

Latched

Values

646

6 4

6 4 6

With sample clocked frequency measurements, ensure that the frequency to measure is twice as fast as the sample clock to prevent a measurement overflow.

Choosing a Method for Measuring Frequency

The best method to measure frequency depends on several factors including the expected frequency of the signal to measure, the desired accuracy, how many counters are available, and how long the measurement can take. For all frequency measurement methods, assume the following:

fx is the frequency to be measured if no error

fk is the known source or gate frequency

measurement time (T) is the time it takes to measure a single sample

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

gating period

-----------------------------------

----

N fx

----

fx fs

---- 1–

------------------------------ -

fk fx–

---------------

Nfkfx–

--------------------------

fx fs

---- 1–

------------------------------ -

fk fx–

---------------

fk fx

----

Nfkfx–

--------------------------

Divide down (N) is the integer to divide down measured frequency, only used in

large range two counters

fs is the sample clock rate, only used in sample clocked frequency

measurements

Here is how these variables apply to each method, summarized in Table 5-2.

• One counter—With one counter measurements, a known timebase is used for the source frequency (fk). The measurement time is the period of the frequency to be measured, or 1/fx.

• Two counter high frequency—With the two counter high frequency method, the second counter provides a known measurement time. The gate frequency equals 1/measurement time.

• Two counter large range—The two counter larger range measurement is the same as a one counter measurement, but now the user has an integer divide down of the signal. An internal timebase is still used for the source frequency (fk), but the divide down means that the measurement time is the period of the divided down signal, or N/fx where N is the divide down.

• Sample clocked—For sample clocked frequency measurements, a known timebase is counted for the source frequency (fk). The measurement time is the period of the sample clock (fs).

Table 5-2. Frequency Measurement Methods

Two Counter

fk Known timebase Known

Measurement time

Max. frequency error

Max. error %

Note: Accuracy equations do not take clock stability into account. Refer to the specifications document for your cDAQ controller for information about clock stability.

Variab le Sample Clocked One Counter

timebase

High

Frequency

Large Range

Known timebase

gating period

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Chapter 5 Counters

Which Method Is Best?

This depends on the frequency to be measured, the rate at which you want to monitor the frequency and the accuracy you desire. Take for example, measuring a 50 kHz signal. Assuming that the measurement times for the sample clocked (with averaging) and two counter frequency measurements are configured the same, Table 5-3 summarizes the results.

Table 5-3. 50 kHz Frequency Measurement Methods

Two Counter

Var iab le

Sample

Clocked

One Counter

High

Frequency

Large Range

fx 50,000 50,000 50,000 50,000

fk 80 M 80 M 1,000 80 M

Measurement

1 .02 1 1

time (ms)

N — — — 50

Max. frequency

.638 31.27 1,000 .625

error (Hz)

Max. error % .00128 .0625 2 .00125

From this, you can see that while the measurement time for one counter is shorter, the accuracy is best in the sample clocked and two counter large range measurements. For another example, Table 5-4 shows the results for 5 MHz.

Table 5-4. 5 MHz Frequency Measurement Methods

Two Counter

Var iab le

Sample

Clocked

One Counter

High

Frequency

Large Range

fx 5 M 5 M 5 M 5 M

fk 80 M 80 M 1,000 80 M

Measurement

1 .0002 1 1

time (ms)

N — — — 5,000

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Table 5-4. 5 MHz Frequency Measurement Methods (Continued)

Two Counter

Var iab le

Max.

Sample

Clocked

One Counter

62.51 333 k 1,000 62.50

High

Frequency

Large Range

Frequency error (Hz)

Max. Error % .00125 6.67 .02 .00125

Again, the measurement time for the one counter measurement is lowest, but the accuracy is lower. Note that the accuracy and measurement time of the sample clocked and two counter large range are almost the same. The advantage of the sample clocked method is that even when the frequency to measure changes, the measurement time does not and error percentage varies little. For example, if you configured a large range two counter measurement to use a divide down of 50 for a 50 k signal, then you would get the accuracy measurement time and accuracy listed in Table 5-3. But if your signal ramped up to 5 M, then with a divide down of 50, your measurement time is 0.01 ms, but your error is now 0.125%. The error with a sample clocked frequency measurement is not as dependent on the measured frequency so at 50 k and 5 M with a measurement time of 1 ms the error percentage is still close to 0.00125%. One of the disadvantages of a sample clocked frequency measurement is that the frequency to be measured must be at least twice the sample clock rate to ensure that a full period of the frequency to be measured occurs between sample clocks.

• Low frequency measurements with one counter is a good method for many applications. However, the accuracy of the measurement decreases as the frequency increases.

• High frequency measurements with two counters is accurate for high frequency signals. However, the accuracy decreases as the frequency of the signal to measure decreases. At very low frequencies, this method may be too inaccurate for your application. Another disadvantage of this method is that it requires two counters (if you cannot provide an external signal of known width). An advantage of high frequency measurements with two counters is that the measurement completes in a known amount of time.

• Measuring a large range of frequencies with two counters measures high and low frequency signals accurately. However, it requires two counters, and it has a variable sample time and variable error % dependent on the input signal.

National Instruments cDAQ-9133, cDAQ-9132, cDAQ-9136, cDAQ-9137, cDAQ-9134 User Manual

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WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS

Contents

Figure 1-1. NI cDAQ-9132/9134/9136 Controller

Figure 1-2. NI cDAQ-9133/9135/9137 Controller

Safety Guidelines

Electromagnetic Compatibility Guidelines

Special Guidelines for Marine Applications

Hardware Symbol Definitions

Unpacking

Installing the cDAQ Controller for Windows

Table 1-1. cDAQ Controller NI-DAQmx Software Support

Figure 1-3. Ring Lug Attached to Ground Terminal

Installing the cDAQ Controller for LabVIEW Real-Time

Table 1-2. cDAQ Controller NI-DAQmx Software Support

Table 1-3. cDAQ Controller NI-XNET Software Support

Figure 1-4. cDAQ Controller System Settings in MAX

Figure 1-5. Adding Software in MAX

Connecting to the Network through the Ethernet Port

Troubleshooting Network Communication in the LabVIEW Real-Time Controller

Wiring Power to the cDAQ Controller

Figure 1-6. Installing the Ferrite on the Power Leads

Figure 1-7. Power Screw Terminal Connector Plug

Powering Down the cDAQ Controller

Controller Startup Options

Removing Modules from the cDAQ Controller

Mounting the cDAQ Controller

Figure 1-8. NI cDAQ-9132/9134/9136 Mounted Horizontally with Panel Mount Kit

Figure 1-9. NI cDAQ-9133/9135/9137 Mounted Horizontally with Panel Mount Kit

Mounting the cDAQ Controller on a Panel

Figure 1-13. Dimensions of the cDAQ-9132/9134/9136 with Mounting Plate Installed

Figure 1-14. Dimensions of the cDAQ-9133/9135/9137 with Mounting Plate Installed

Using the cDAQ Controller on a Desktop

Figure 1-16. Connecting the End Brackets to the Controller (cDAQ-9134 Shown)

Figure 1-17. Dimensions of the cDAQ-9132/9134/9136 with Desktop Mounting Kit Installed

Figure 1-18. Dimensions of the cDAQ-9133/9135/9137 with Desktop Mounting Kit Installed

Mounting the cDAQ Controller on a DIN Rail

Figure 1-20. DIN Rail Clip Parts Locator Diagram

Mounting the cDAQ Controller on a Rack

Installing the Module Immobilization Accessory

Figure 1-21. Module Immobilization Accessory Installation

cDAQ Controller Features

Mini DisplayPort Connector

Figure 1-24. Mini DisplayPort Pinout

USB Host Ports

Figure 1-25. Installing a Ferrite on Two USB Cables

Table 1-4. USB Host Port Pin Locations

USB Device Port

Table 1-5. USB Device Port Pin Locations

RESET Button

Power Button

LEDs

Table 1-6. LED Indications

Ethernet Ports

Figure 1-26. Ethernet Port Pin Locations: Fast Ethernet Signals (Gigabit Ethernet Signals)

Ethernet LEDs

Table 1-7. Ethernet LED Indications

Ethernet Cabling

Table 1-8. Ethernet Cable Wiring Connections

NI-XNET CAN/LIN Connector

PFI 0 SMB Connector

RS-232 Serial Port

Figure 1-27. RS-232 Serial Port Pin Locations

Power Connector