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National Instruments DAQ 6527 User Manual - About This Manual

Other manuals for DAQ 6527: User Manual
Manual is about: Isolated Digital I/O Interface for PCI, PXI, and CompactPCI

Summary of DAQ 6527

  • Page 1

    Daq 6527 user manual isolated digital i/o interface for pci, pxi, and compactpci 652 7 user manual december 1999 edition part number 322164a-01.

  • Page 2

    Worldwide technical support and product information www.Ni.Com national instruments corporate headquarters 11500 north mopac expressway austin, texas 78759-3504 usa tel: 512 794 0100 worldwide offices australia 03 9879 5166, austria 0662 45 79 90 0, belgium 02 757 00 20, brazil 011 284 5011, canada ...

  • Page 3: Important Information

    Important information warranty the 6527 device is 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 defect...

  • Page 4: Contents

    © national instruments corporation v 6527 user manual contents about this manual how to use the manual set..........................................................................................Ix conventions ............................................................................................

  • Page 5

    Contents 6527 user manual vi www.Ni.Com solid-state relay outputs ............................................................................................. 3-9 output channels.............................................................................................. 3-9 overcurrent protection...

  • Page 6

    Contents © national instruments corporation vii 6527 user manual tables table 3-1. Port functionality for 6527 devices .....................................................3-3 table 3-2. Signal descriptions for 6527 device i/o connectors ...........................3-5 table 4-1. Digital filter chara...

  • Page 7: About This Manual

    © national instruments corporation ix 6527 user manual about this manual this manual describes the electrical and mechanical aspects of the 6527 devices, and contains information concerning their operation and programming. Unless otherwise noted, the text applies to all devices in the 6527 family, w...

  • Page 8: Conventions

    About this manual 6527 user manual x www.Ni.Com conventions the following conventions appear in this manual: angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name—for example, dig+0.. ♦ the ♦ symbol indicates that the text follo...

  • Page 9: Introduction

    © national instruments corporation 1-1 6527 user manual 1 introduction this chapter describes the 6527 devices; lists what you need to get started, software programming choices, and optional equipment; describes custom cabling options; and explains how to unpack your board. About the 6527 device tha...

  • Page 10: Using Pxi With Compactpci

    Chapter 1 introduction 6527 user manual 1-2 www.Ni.Com using pxi with compactpci using pxi-compatible products with standard compactpci products is an important feature provided by the pxi specification, revision 1.0. If you use a pxi-compatible plug-in device in a standard compactpci chassis, you w...

  • Page 11: Unpacking

    Chapter 1 introduction © national instruments corporation 1-3 6527 user manual unpacking your 6527 device is shipped in an antistatic package to prevent electrostatic damage to the board. Electrostatic discharge can damage several components on the board. To avoid such damage in handling the board, ...

  • Page 12

    Chapter 1 introduction 6527 user manual 1-4 www.Ni.Com componentworks contains tools for data acquisition and instrument control built on ni-daq driver software. Componentworks provides a higher-level programming interface for building virtual instruments through standard ole controls and dlls. With...

  • Page 13: Optional Equipment

    Chapter 1 introduction © national instruments corporation 1-5 6527 user manual 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 6527 device, including cables, connector bl...

  • Page 14: Custom Cabling

    Chapter 1 introduction 6527 user manual 1-6 www.Ni.Com custom cabling national instruments offers cables and accessories for you to prototype your application or to use if you frequently change board interconnections. If you want to develop your own cable, note that the 6527 device uses a 100-pin fe...

  • Page 15: Software Installation

    © national instruments corporation 2-1 6527 user manual 2 installation and configuration this chapter describes how to install and configure your 6527 device. Software installation note install your software before you install your 6527 device. Refer to the appropriate release notes indicated below ...

  • Page 16: Board Configuration

    Chapter 2 installation and configuration 6527 user manual 2-2 www.Ni.Com 3. Remove the expansion slot cover on the back panel of the computer. 4. Touch a metal part inside your computer to discharge any static electricity that might be on your clothes or body. 5. Insert the pci-6527 in a 5 v pci slo...

  • Page 17: Signal Connections

    © national instruments corporation 3-1 6527 user manual 3 signal connections this chapter describes the pin arrangement, signal names, and signal connections on your 6527 device. Caution connections that exceed any of the maximum ratings of input or output signals on your 6527 device can damage the ...

  • Page 18

    Chapter 3 signal connections 6527 user manual 3-2 www.Ni.Com note for input ports, connect the higher voltage to the dig+ pin and the lower voltage to the dig– pin. For output ports, you can connect signals to the two pins of each line without regard to which voltage is higher. The output lines cons...

  • Page 19

    Chapter 3 signal connections © national instruments corporation 3-3 6527 user manual table 3-1 shows the functionality of each port. Cable assembly connectors the optional r1005050 cable assembly you can use with the 6527device is an assembly of two 50-pin cables and three connectors. Both cables ar...

  • Page 20

    Chapter 3 signal connections 6527 user manual 3-4 www.Ni.Com figure 3-2. Cable-assembly connector pinout for the r1005050 ribbon cable +5 v dig+0.0 dig+0.1 dig+0.2 dig+0.3 dig+0.4 dig+0.5 dig+0.6 dig+0.7 dig+1.0 dig+1.1 dig+1.2 dig+1.3 dig+1.4 dig+1.5 dig+1.6 dig+1.7 dig+2.0 dig+2.1 dig+2.2 dig+2.3 ...

  • Page 21

    Chapter 3 signal connections © national instruments corporation 3-5 6527 user manual i/o connector signal descriptions table 3-2 lists the signal descriptions for the 6527 device i/o connector pins. Table 3-2. Signal descriptions for 6527 device i/o connectors pin signal name description 33, 35, 37,...

  • Page 22: Power Connections

    Chapter 3 signal connections 6527 user manual 3-6 www.Ni.Com power connections four of the pins on the i/o connector are not isolated. Pin 50 and pin 100 connect to gnd, the computer ground reference. Pin 49 and pin 99 of the i/o connector supply +5 v from the computer power supply via a self-resett...

  • Page 23: Isolation Voltages

    Chapter 3 signal connections © national instruments corporation 3-7 6527 user manual isolation voltages the positive and negative (dig+ and dig–) terminals of each channel are isolated from the other input and output channels, from the +5 v and gnd pins, and from the computer power supply. Isolation...

  • Page 24

    Chapter 3 signal connections 6527 user manual 3-8 www.Ni.Com sensing dc voltages when you apply a dc voltage of at least 2 v across the two input terminals, the 6527 device registers a logic high for that input. If no voltage is present (a voltage difference of 1 v or less), the 6527 device register...

  • Page 25: Solid-State Relay Outputs

    Chapter 3 signal connections © national instruments corporation 3-9 6527 user manual reducing the forward current for high voltages as input voltage increases above 5 v, the input current drawn by the 6527 (forward current i f ) also rises. At 24 v, for example, current is approximately (24 v – 1.5 ...

  • Page 26

    Chapter 3 signal connections 6527 user manual 3-10 www.Ni.Com figure 3-5. Signal connections for solid-state relays writing a 0 (logic low) to an output bit closes the relay, and writing a 1 (logic high) opens the relay. To both sink and source current with one channel requires an external resistor....

  • Page 27

    Chapter 3 signal connections © national instruments corporation 3-11 6527 user manual figure 3-6 shows a signal connection example for both sinking and sourcing current. The example shows a ttl-level application with a supply voltage of +5 v. The 6527 provides sink current when the relay is closed. ...

  • Page 28

    Chapter 3 signal connections 6527 user manual 3-12 www.Ni.Com overcurrent protection the 6527 device outputs include circuitry to protect them from currents over the specified range. When excessive current flows through the relay, the relay increases resistance. Once the current level drops back und...

  • Page 29: Device Overview

    © national instruments corporation 4-1 6527 user manual 4 device overview this chapter contains a functional overview of the 6527device and explains the operation of each functional unit. The digital filter and change detection options are also described. Functional overview the block diagram in fig...

  • Page 30

    Chapter 4 device overview 6527 user manual 4-2 www.Ni.Com figure 4-1. 6527 block diagram pci interface circuitry your 6527 board uses the pci mite asic to communicate with the pci bus. The pci mite was designed by national instruments specifically for data acquisition. The pci mite is fully complian...

  • Page 31: Digital Filtering

    Chapter 4 device overview © national instruments corporation 4-3 6527 user manual • input ports – read – apply digital filtering (software programmable) – detect changes on selected lines (software programmable) table 3-1, port functionality for 6527 devices , contains a summary of port functions. O...

  • Page 32

    Chapter 4 device overview 6527 user manual 4-4 www.Ni.Com you can enable filtering on as many input lines as you wish. All filtered lines share the same timing interval. The interval ranges from 100 ns to 100 ms. However, as shown in table 4-1, an interval of 200 µs or less does not guarantee blocki...

  • Page 33: Change Notification

    Chapter 4 device overview © national instruments corporation 4-5 6527 user manual figure 4-2 shows a filter configuration with an 800 ns filter interval (400 ns filter clock). In practice, a much slower filter interval is recommended. In periods a and b the filter blocks the glitches because the ext...

  • Page 34

    Chapter 4 device overview 6527 user manual 4-6 www.Ni.Com if you anticipate noisy or rapidly changing input lines, use digital filtering to reduce the changes to a manageable number; excessive notifications can hurt system performance. For example, if you want to limit the rate of notifications (and...

  • Page 35: Specifications

    © national instruments corporation a-1 6527 user manual a specifications this appendix lists the specifications for the 6527 devices. These specifications are typical at 25 ° c unless otherwise noted. Digital i/o pci/pxi-6527......................................... 24 optically isolated digital inp...

  • Page 36

    Appendix a specifications for 6527 user manual a-2 www.Ni.Com relay outputs number of channels................................24, each with two terminals that are isolated from other channels relay type ...............................................Normally open form a solid-state relays max switch...

  • Page 37

    Appendix a specifications for © national instruments corporation a-3 6527 user manual physical dimensions (not including connectors) pci-6527 ......................................... 17.5 × 10.7 cm (6.9 × 4.2 in.) pxi-6527......................................... 16 × 10 cm (6.3 × 3.9 in.) i/o conn...

  • Page 38: Technical Support Resources

    © national instruments corporation b-1 6527 user manual b technical support resources this appendix describes the comprehensive resources available to you in the technical support section of the national instruments web site and provides technical support telephone numbers for you to use if you have...

  • Page 39: Worldwide Support

    Appendix b technical support resources 6527 user manual b-2 www.Ni.Com software-related resources • instrument driver network—a library with hundreds of instrument drivers for control of standalone instruments via gpib, vxi, or serial interfaces. You also can submit a request for a particular instru...

  • Page 40: Glossary

    © national instruments corporation g-1 6527 user manual glossary prefix meanings value n- nano- 10 –9 µ- micro- 10 – 6 m- milli- 10 –3 k- kilo- 10 3 numbers/symbols ° degrees – negative of, or minus Ω ohms / per % percent ± plus or minus + positive of, or plus +5 v +5 volts signal a a amperes ac alt...

  • Page 41

    Glossary 6527 user manual g-2 www.Ni.Com c c celsius cat i installation category (overvoltage category) i—equipment for which measures are taken to limit transient overvoltages to an appropriate low level. Examples include signal-level, telecommunications, and electronic equipment with transient ove...

  • Page 42

    Glossary © national instruments corporation g-3 6527 user manual i i ih current, input high i il current, input low in. Inches i/o input/output i oh current, output high i ol current, output low isolation signal conditioning to break ground loops and reject high common-mode voltages to protect equip...

  • Page 43

    Glossary 6527 user manual g-4 www.Ni.Com o optocoupler a device that transfers electrical signals by utilizing light waves to provide coupling with electrical isolation between input and output optical isolation the technique of using an optocoupler to transfer data without electrical continuity, to...

  • Page 44

    Glossary © national instruments corporation g-5 6527 user manual t ttl transistor-transistor logic, or 5 v digital voltage levels originally used with transistor-transistor logic typ typical v v volts v cc supply voltage; for example, the voltage a computer supplies to its plug-in devices vdc volts ...

  • Page 45: Index

    © national instruments corporation i-1 6527 user manual index numbers +5 v signal description (table), 3-5 power connections, 3-6 6527 devices block diagram, 4-2 change notification, 4-5 to 4-6 custom cabling, 1-6 digital filtering, 4-3 to 4-5 features, 1-1 functional overview, 4-1 to 4-3 optional e...

  • Page 46

    Index 6527 user manual i-2 www.Ni.Com e environment specifications, a-3 equipment, optional, 1-5 f filtering. See digital filtering. Forward current for high voltages, reducing, 3-8 to 3-9 fuse, self-resetting, 3-6 g gnd signal description (table), 3-5 power connections, 3-6 h hardware installation,...

  • Page 47

    Index © national instruments corporation i-3 6527 user manual power rating, 3-6 power requirement specifications, a-2 power-on and power-off conditions, 3-12 problem-solving and diagnostic resources, online, b-1 pxi, using with compactpci, 1-2 r r1005050 cable assembly. See cable assembly connectors...