National Instruments DAQPad-6508 User Manual

Digital i/o devices for usb

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DAQPad

-6507/6508

User Manual

Digital I/O Devices for USB

DAQPad-6507/6508 User Manual

December 1998 Edition

Part Number 321724B-01

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Page 1 ™ DAQPad -6507/6508 User Manual Digital I/O Devices for USB DAQPad-6507/6508 User Manual December 1998 Edition Part Number 321724B-01 © Copyright 1997, 1998 National Instruments Corporation. All rights reserved.
Page 2 Netherlands 0348 433466, Norway 32 84 84 00, Singapore 2265886, Spain 91 640 0085, Sweden 08 730 49 70, Switzerland 056 200 51 51, Taiwan 02 377 1200, United Kingdom 01635 523545 National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin, Texas 78730-5039 USA Tel: 512 794 0100 © Copyright 1997, 1998 National Instruments Corporation. All rights reserved.
Page 3: Daqpad
The DAQPad-6507 and DAQPad-6508 are warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor.
Page 4: Table Of Contents
National Instruments Documentation ................xi Related Documentation....................xii Customer Communication ....................xii Chapter 1 Introduction About the DAQPad-6507 and DAQPad-6508 Devices ...........1-1 What You Need to Get Started ..................1-2 Software Programming Choices ..................1-2 National Instruments Application Software ............1-3 NI-DAQ Driver Software ..................1-4 Optional Equipment ......................1-5 Custom Cabling ....................1-6...
Page 5 Customer Communication Glossary Index Figures Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware..............1-5 Figure 2-1. Connection between Your Computer or USB Hub and Your DAQPad Device ................2-2 DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 6 Host Computer and the DAQPad-6507 or DAQPad-6508 ....2-4 Figure 3-1. Screw Terminal Assignments for the DAQPad-6507 ......3-1 Figure 3-2. Digital I/O Connector Pin Assignments for the DAQPad-6508 .....3-2 Figure 3-3. Cable Assembly Connector Pin Assignments for Pins 1 through 50 of the DAQPad-6508 I/O Connector............3-5 Figure 3-4.
Page 7: About This Manual
The DAQPad-6507/6508 User Manual is organized as follows: • Chapter 1, Introduction, describes the DAQPad-6507 and DAQPad-6508; lists what you need to get started; describes software programming choices, optional equipment, and custom cables; and explains how to unpack the DAQPad-6507 and DAQPad-6508.
Page 8: Conventions Used In This Manual
About This Manual • Appendix D, Customer Communication, contains forms you can use to request help from National Instruments or to comment on our products. • Glossary contains an alphabetical list and description of terms used in this manual, including abbreviations, acronyms, metric prefixes, mnemonics, and symbols.
Page 9: National Instruments Documentation
Consult these guides when you are making your connections. • SCXI Chassis User Manual—If you are using SCXI, read this manual for maintenance information on the chassis and installation instructions. © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 10: Related Documentation
USB Specification, Revision 1.1 Customer Communication National Instruments wants to receive your comments on our products and manuals. We are interested in the applications you develop with our products, and we want to help if you have problems with them. To make it easy for you to contact us, this manual contains comment and configuration forms for you to complete.
Page 11: Introduction
About the DAQPad-6507 and DAQPad-6508 Devices Thank you for purchasing the National Instruments DAQPad-6507 or DAQPad-6508. Your DAQPad device is a 96-bit, parallel, digital I/O interface for computers with USB ports. Four 82C55A programmable peripheral interface (PPI) chips control the 96 bits of digital I/O. The 82C55A can operate in either a unidirectional or bidirectional mode and can generate interrupt requests to the host computer.
Page 12: What You Need To Get Started
Detailed specifications of the DAQPad-6507 and DAQPad-6508 devices are in Appendix A, Specifications. What You Need to Get Started To set up and use your DAQPad-6507 or DAQPad-6508, you will need the following: DAQPad-6507 or DAQPad-6508 device DAQPad-6507/6508 User Manual One of the following software packages and documentation: –...
Page 13: National Instruments Application Software
ANSI standard C programming language. The LabWindows/CVI Data Acquisition Library, a series of functions for using LabWindows/CVI with National Instruments DAQ hardware, is included with the NI-DAQ software kit. The LabWindows/CVI Data Acquisition Library is functionally equivalent to the NI-DAQ software.
Page 14: Ni-Daq Driver Software
An example of a low-level function is writing directly to registers on the DAQ device. NI-DAQ does not sacrifice the performance of National Instruments DAQ devices because it lets multiple devices operate at their peak performance.
Page 15: Optional Equipment
Workstation Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware Optional Equipment National Instruments offers a variety of products to use with your DAQPad-6508 device, including cables, connector blocks, and other accessories, as follows: • Cables and cable assemblies •...
Page 16: Custom Cabling
National Instruments offers cables and accessories for you to prototype your application or to use if you frequently change device interconnections. You can connect the DAQPad-6508 device to a wide range of printers, plotters, test instruments, I/O racks and modules, screw terminal panels, and almost any device with a parallel interface.
Page 17: Installation And Configuration
Hardware Installation You can connect your DAQPad-6507 or DAQPad-6508 to any available USB socket. The following are general installation instructions, but consult your computer user manual or technical reference manual for specific instructions and warnings.
Page 18: Figure 2-1. Connection Between Your Computer Or Usb Hub And Your Daqpad Device
Figure 2-1. Connection between Your Computer or USB Hub and Your DAQPad Device Flip the rocker switch to turn the power on for the DAQPad-6507 or DAQPad-6508. Your computer should detect your DAQPad device immediately, and when the computer recognizes your DAQPad device, the LED on the front panel blinks or lights up, depending on the status of your device.
Page 19: Table 2-1. Led Patterns For Daqpad-6507/6508 States
The DAQPad-6507/6508 devices use 100 kΩ resistors for polarity selection. These signals are controlled by a switch on the back of your DAQPad. For more information, see the Digital I/O State Selection section in Chapter 3, Signal Connections. © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 20: Configuration
DAQPad-6507/6508 with Upstream Connector Downstream Connector Figure 2-2. Upstream and Downstream Connections between the Host Computer and the DAQPad-6507 or DAQPad-6508 Configuration The DAQPad-6507/6508 devices are completely software-configurable, hot Plug and Play instruments. The Plug and Play services query the instrument and allocate the required resources.
Page 21 USB supply. If you are using a battery pack, such as the BP-1, it is best to use the rocker switch on the back panel to prolong the charge of the battery. © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 22: Signal Connections
DAQPad-6507/6508 devices can damage the device and the computer. The description of each signal in this section includes information about maximum input ratings. National Instruments is not liable for any damages resulting from any inaccurate signal connections. To learn more about screw terminal assignments on the DAQPad-6507, refer to Figure 3-1.
Page 23: I/O Connector Pin Description
CPA4 BPA4 DPA4 APA3 CPA3 BPA3 DPA3 APA2 CPA2 BPA2 DPA2 APA1 CPA1 BPA1 DPA1 APA0 CPA0 BPA0 DPA0 +5 V +5 V Figure 3-2. Digital I/O Connector Pin Assignments for the DAQPad-6508 DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 24: I/O Connector Signal Connection Descriptions
Chapter 3 Signal Connections I/O Connector Signal Connection Descriptions Refer to Table 3-1 for pin assignments for the DAQPad-6508. Table 3-1. Pin Assignments for the DAQPad-6508 Signal Name Description 1, 3, 5, 7, 9, 11, 13, 15 APC<7..0> Bidirectional Data Lines for Port C of PPI A—APC7 is the MSB, APC0 the LSB.
Page 25: Port C Pin Assignments
Both cables are joined to a single connector on one end and to individual connectors on the free ends. The 100-pin connector that joins the two cables plugs into the I/O connector of the DAQPad-6508. The other two connectors are 50-pin connectors, one of which is connected to pins 1 through 50, and the other is connected to pins 51 through 100 of the DAQPad-6508 I/O connector.
Page 26: Of The Daqpad-6508 I/O Connector
43 44 APA2 BPA2 45 46 BPA1 APA1 47 48 BPA0 APA0 49 50 +5 V Figure 3-3. Cable Assembly Connector Pin Assignments for Pins 1 through 50 of the DAQPad-6508 I/O Connector © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 27: Figure 3-4. Cable Assembly Connector Pin Assignments For Pins 51 Through 100 Of The Daqpad-6508 I/O Connector
43 44 CPA2 DPA2 45 46 CPA1 DPA1 47 48 DPA0 CPA0 49 50 +5 V Figure 3-4. Cable Assembly Connector Pin Assignments for Pins 51 through 100 of the DAQPad-6508 I/O Connector DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 28: Digital I/O Signal Connections
TTL signals and sensing external device states, such as the state of the switch in Figure 3-5. Digital output applications include sending TTL signals and driving external devices such as the LED shown in Figure 3-5. © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 29: Power Connections
Pins 49 and 99 of the I/O connector are connected to the +5 V supply of the DAQPad-6507/6508 devices. You can power the DAQPad-6507 or DAQPad-6508 from either USB power or an external source. The DAQPad uses USB power when the external source is not plugged in. USB power limits any device from using more than 0.5 A.
Page 30: Digital I/O State Selection
TTL low level of 0.4 VDC. DAQPad-6507/6508 +5 V 100 kΩ 82C55A Digital I/O Line Figure 3-6. DIO Channel Configured for High DIO State with External Load © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 31: Low Dio State
Also, make sure the pull-up resistor value is not so large that leakage current from the DIO line along with the current from the 100 kΩ pull-down resistor brings the voltage at the resistor below a TTL-high level of 2.8 VDC. DAQPad-6507/6508 User Manual 3-10 © National Instruments Corporation...
Page 32: Floating Dio State
Floating DIO State The DIO lines are not pulled high or low by your DAQPad device in this configuration. Use an external 100 kΩ resistor to pull the line to the state you want. © National Instruments Corporation 3-11 DAQPad-6507/6508 User Manual...
Page 33: Timing Specifications
If the port is in the input mode, this signal indicates when the data on the data lines should be valid. DAQPad-6507/6508 User Manual 3-12 © National Instruments Corporation...
Page 34: Mode 1 Input Timing
STB* = 1 to INTR = 1 — Data after STB* = 1 — RD* = 0 to INTR = 0 — RD* = 1 to IBF = 0 — All timing values are in nanoseconds. © National Instruments Corporation 3-13 DAQPad-6507/6508 User Manual...
Page 35: Mode 1 Output Timing
WR* = 1 to OBF* = 0 — ACK* = 0 to OBF* = 1 — ACK* pulse width — ACK* = 1 to INTR = 1 — All timing values are in nanoseconds. DAQPad-6507/6508 User Manual 3-14 © National Instruments Corporation...
Page 36: Mode 2 Bidirectional Timing
ACK* = 0 to OBF = 1 — ACK* pulse width — ACK* = 0 to output — ACK* = 1 to output float RD* = 1 to IBF = 0 — All timing values are in nanoseconds. © National Instruments Corporation 3-15 DAQPad-6507/6508 User Manual...
Page 37: Theory Of Operation
Theory of Operation This chapter contains a functional overview of the DAQPad-6507/6508 devices and explains the operation of each functional unit making up the DAQPad-6507 or DAQPad-6508. The block diagram in Figure 4-1 illustrates the key functional components of the DAQPad-6507/6508 devices.
Page 38: Interrupt Control Circuitry
Each group has eight data bits and four control and status bits from port C (PC). Modes 1 and 2 use handshaking signals from port C to synchronize data transfers. Refer to Appendix B, OKI 82C55A Data Sheet, for more detailed information. DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 39: Digital I/O Connector
Digital I/O Connector All digital I/O is transmitted through a standard, 100-pin, female connector for the DAQPad-6508 or 100-pin screw terminal with a strain-relief clamp for the DAQPad-6507. Pins 49 and 99 are connected to +5 V through a self-restarting protection fuse (F1). See Figure 4-1 for its location. This +5 V supply is often required to operate I/O module mounting racks.
Page 40: Appendix A Specifications
1.0 µA Output low voltage (I = 2.5 mA) 0.4 V Output high voltage (I = -2.5 mA) 3.7 V 5.0 V Input current (0 < V < 5 V) –1.0 µA 1.0 µA © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 41 4.40 to 5.25 VDC......220 mA typ, 500 mA max Physical Dimensions ..........22.9 by 14.6 cm (9.0 by 5.7 in.) I/O connector DAQPad-6507 .........100-screw terminals DAQPad-6508 .........100-pin female, 0.050 series D-type Environment Operating temperature ......0° to 70° C Storage temperature ........–55° to 150° C Relative humidity ........5% to 90% noncondensing...
Page 42: Oki 82C55A Data Sheet
(OKI Semiconductor) CMOS programmable peripheral interface. This interface is used on the DAQPad-6507/6508 devices. Copyright © OKI Semiconductor 1993. Reprinted with permission of copyright owner. All rights reserved. OKI Semiconductor Data Book Microprocessor, Seventh Edition, March 1993 © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 59: Appendix C Common Questions
If you are using Windows, the NI-DAQ Configuration Utility has a Test menu with some excellent tools for doing simple functional tests of the device, such as analog input and output, digital I/O, and counter/timer tests. © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 60 Digital I/O State Selection section in Chapter 3, Signal Connections. These resistors weakly pull the output to either a logic high or logic low state. DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 61: Customer Communication
Electronic Services Bulletin Board Support National Instruments has BBS and FTP sites dedicated for 24-hour support with a collection of files and documents to answer most common customer questions. From these sites, you can also download the latest instrument drivers, updates, and example programs. For recorded instructions on how to use the bulletin board and FTP services and for BBS automated information, call 512 795 6990.
Page 62 Telephone and Fax Support National Instruments has branch offices all over the world. Use the list below to find the technical support number for your country. If there is no National Instruments office in your country, contact the source from which you purchased your software to obtain support.
Page 63 National Instruments for technical support helps our applications engineers answer your questions more efficiently. If you are using any National Instruments hardware or software products related to this problem, include the configuration forms from their user manuals. Include additional pages if necessary.
Page 64 Complete a new copy of this form each time you revise your software or hardware configuration, and use this form as a reference for your current configuration. Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently.
Page 65 Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products. This information helps us provide quality products to meet your needs. Title: ™ DAQPad -6507/6508 User Manual Edition Date: December 1998 Part Number: 321724B-01 Please comment on the completeness, clarity, and organization of the manual.
Page 66: Glossary
– 3 milli- kilo- mega- giga- Symbols/Numbers percent ± plus or minus ° degrees positive of, or plus – negative of, or minus Ω ohms square root of +5 V +5 VDC source signal © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 67 (1) hardware—a property of an event that occurs at an arbitrary time, without synchronization to a reference clock (2) software—a property of a function that begins an operation and returns prior to the completion or termination of the operation DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 68 See also working voltage. buffer temporary storage for acquired or generated data (software) © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 69 Port A of PPI C bidirectional lines for Port A of PPI C DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 70 D/A and/or DIO boards in the same computer DATA data lines at the specified port signal direct current DC coupled allowing the transmission of both AC and DC signals © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 71 PPI D interrupt request bit for Port A DIRQ1 PPI D interrupt request bit for Port B direct memory access differential nonlinearity disk operating system downstream the direction of data flow from the host computer or away from the host DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 72 ROM an onboard EEPROM that may contain device-specific initialization and system boot functionality external trigger a voltage pulse from an external source that triggers an event such as A/D conversion © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 73 (such as digital ground, analog output ground, analog input ground, and so on), are connected or tied together grounded measurement See referenced single-ended measurement system. system DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 74 Universal Serial Bus host controller is installed hertz input buffer full signal IBFA input buffer bit for Port A IBFB input buffer bit for Port B International Business Machines integrated circuit identification © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 75 Port A input interrupts INTEA interrupt enable bit for Port A INTEB interrupt enable bit for Port B integral control a control action that eliminates the offset inherent in proportional control DAQPad-6507/6508 User Manual G-10 © National Instruments Corporation...
Page 76 Isothermal construction of terminal blocks increases thermocouple measurement accuracy. © National Instruments Corporation G-11 DAQPad-6507/6508 User Manual...
Page 77 (1) Mega, the standard metric prefix for 1 million or 10 , when used with units of measure such as volts and hertz; (2) mega, the prefix for 1,048,576, or 2 , when used with B to quantify data or computer memory DAQPad-6507/6508 User Manual G-12 © National Instruments Corporation...
Page 78 NuBus—a slot-dependent, 32-bit bus type used in Macintosh computers that has 32 interrupts normally closed, or not connected NI-DAQ National Instruments driver software for DAQ hardware © National Instruments Corporation G-13 DAQPad-6507/6508 User Manual...
Page 80 Intel to replace ISA and EISA. It is achieving widespread acceptance as a standard for PCs and workstations; it offers a theoretical maximum transfer rate of 132 Mbytes/s. © National Instruments Corporation G-15 DAQPad-6507/6508 User Manual...
Page 81 DAQ board to keep a continuous buffer filled with data, so that when the trigger conditions are met, the sample includes the data leading up to the trigger condition DAQPad-6507/6508 User Manual G-16 © National Instruments Corporation...
Page 83 For example, a scan rate of 10 Hz means sampling each channel 10 times per second. SCXI Signal Conditioning eXtensions for Instrumentation single-ended inputs shared memory See dual-access memory DAQPad-6507/6508 User Manual G-18 © National Instruments Corporation...
Page 84 (1) hardware—a property of an event that is synchronized to a reference clock (2) software—a property of a function that begins an operation and returns only when the operation is complete © National Instruments Corporation G-19 DAQPad-6507/6508 User Manual...
Page 85 (and vice versa), commonly used as a computer bus to serial device interface for serial communication update interval UISOURCE update interval counter clock signal DAQPad-6507/6508 User Manual G-20 © National Instruments Corporation...
Page 86 VISA a new driver software architecture developed by National Instruments to unify instrumentation software for GPIB, DAQ, and VXI. It has been accepted as a standard for VXI by the VXIplug&play Systems Alliance. © National Instruments Corporation...
Page 88: Index
NI-DAQ driver software, 1-4 to 1-5 pin assignments theory of operation, 4-1 to 4-3 pins 1 through 50 (figure), 3-5 unpacking, 1-6 pins 51 through 100 (figure), 3-6 common questions, C-1 to C-2 ComponentWorks software, 1-3 © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 89 DIO state, 3-10 to 3-11 (figure), 2-4 documentation high DIO state, 3-9 to 3-10 conventions used in manual, x National Instruments documentation, xi organization of manual, ix-x I/O connector pin descriptions related documentation, xii pin assignments (figure), 3-2 DPA<7..0> signal (table), 3-3 Port C pin assignments, 3-4 DPB<7..0>...
Page 90 DAQPad-6507/6508 devices. See installation and configuration, C-1 to C-2 theory of operation. RD* signal description (table), 3-12 mode 1 input timing (figure), 3-13 mode 2 bidirectional timing (figure), 3-15 requirements for getting started, 1-2 © National Instruments Corporation DAQPad-6507/6508 User Manual...
Page 91 A-1 to A-2 USB microcontroller digital I/O, A-1 to A-2 common questions, C-1 environment, A-2 description, 4-2 physical, A-2 power requirements, A-2 SSR-OAC-5 and SSR-OAC-5A output modules, driving (note), 1-2 VirtualBench software, 1-3 DAQPad-6507/6508 User Manual © National Instruments Corporation...
Page 92 Index WR* signal description (table), 3-12 mode 1 output timing (figure), 3-14 mode 2 bidirectional timing (figure), 3-15 © National Instruments Corporation DAQPad-6507/6508 User Manual...

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Daqpad-6507

National Instruments DAQPad-6508 User Manual

About this Manual

Chapter 1 Introduction

Chapter 2 Installation and Configuration

Chapter 3 Signal Connections

Chapter 4 Theory of Operation

Appendix A Specifications

Appendix B

OKI 82C55A Data Sheet

Appendix C Common Questions

Appendix D

Customer Communication

Glossary

Index

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Summary of Contents for National Instruments DAQPad-6508

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