National Instruments DAQ 6527 manuale d’uso

DAQ 6527 User Manual Isolated Digital I/O Interface for PCI, PXI, and CompactPCI 652 7 User Manual December 1999 Edition Part Number 3221 64A-01[...]

Worldwide Technical Support and Product Info rmation 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 (Calgary) 403 274 9391, Canada (Ontario) 905 785 [...]

Important Information Warranty The 6527 device is warranted against defect s in materi als and workmanshi p for a period of one year from the date of shipment , a s evidenced by receipts or other documentation. Nat ional Instruments will, at its option, repair or replace equipment that proves to be defective durin g the warranty period . T his w ar[...]

© National Instruments Corporation v 6527 User Manual Contents About This Manual How To Use the Manual Set ............ ............ ........... .............. ........... ............ ........... ....... ix Conventions ............ ........... ........... ............... ........... ........... ........... ............... ........... ....... x Re[...]

Contents 6527 User Manual vi www.ni.com Solid-State Relay Outputs ...................... .............. ........... ............ ........... .............. ......... 3-9 Output Channels .................... ... ... ........... ... ........... ... ........... ............ ... ........... ... 3-9 Overcurrent Protection ....... ............ ... ......[...]

Contents © National Instruments Corporation vii 6527 User Manual Tables Table 3-1. Port Functionality for 6 527 Devices ..................................................... 3-3 Table 3-2. Signal Descriptions for 6527 Devic e I/O Connectors .................... ....... 3-5 Table 4-1. Digital Filter Characteristics ........................... .....[...]

© National Instruments Corporation ix 6527 User Manual About This Manual This manual describes the electrical and mechanical aspects of the 652 7 de vices, and contains information concerning their operation and programming. Unless otherwise noted, the text applies to all de vices in the 652 7 family , which includes the PCI-6527 and PXI-6527. How[...]

About This Manual 6527 User Manual x www.ni.com Conventions The follo wing con ventions appear in this manual: < > Angle brackets that contain numbers separated b y an ellipsis represent a range of v alues associated with a bit or signal name—for example, DIG+0.<3..0>. ♦ The ♦ symbol indicates that the te xt follo wing it applies [...]

© National Instruments Corporation 1-1 6527 User Manual 1 Introduction This chapter describes the 652 7 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 Thank you for purchasing a National Instruments 652[...]

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 will be unable to use PXI-specific function s, bu[...]

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, take the following precautions: • Ground yourse[...]

Chapter 1 Introduction 6527 User Manual 1-4 www .ni.com ComponentW orks contains to ols for data acquisitio n and instrument control bu ilt on NI-D A Q driv er software. ComponentW orks provides a higher-le vel programming interface for b uilding virtual instruments through standard OLE controls and DLLs. W ith ComponentW orks, you can use all of t[...]

Chapter 1 Introduction © National Instruments Corporation 1-5 6527 User Manual Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Y our Hardware Optional Equipment National Instruments offers a variety of products to use with yo ur 652 7 device, including cables, connector blocks, and other accessories, as follows: • C[...]

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 yo u frequently change board interconnections. If you want to de velop your own cable, note that the 6527 de vice uses a 100-pin female cable header . A MP Corporation part nu m[...]

© National Instruments Corporation 2-1 6527 User Manual 2 Installation and Configuration This chapter describes how to install and configure your 65 27 device. Software Installation Note Install your software before you install your 6527 device. Refer to the appropriate release notes indicated belo w for specific instructions on the software insta[...]

Chapter 2 Installation and Configuration 6527 User Manual 2-2 www .ni.com 3. Remov e the expansion slot cover on the back panel of the computer . 4. T ouch a metal part inside your computer to discharge an y static electricity that might be on your clothes or body . 5. Insert the PCI-6527 in a 5 V PCI slot. It may be a tight f i t, but do not force[...]

© 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 ex ceed any of the maximum ratings of input or output signals on your 6527 de vice can damage the board and your computer . The description of ea[...]

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 lo wer v oltage to the DIG– pin. For output ports, you can connect signals to the two pins of each line without regard to which v oltage is higher . The output lines consist of solid-state relays and act as bidire[...]

Chapter 3 Signal Connections © National Instruments Corporation 3-3 6527 User Manual T able 3-1 shows the functionality of each port. Cable Assembly Connectors The optional R1005050 cable assembly you can use with the 6527 device is an assembly of two 50-pin cables and three connectors. Both cables are joined to a single connector on one end and t[...]

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 DIG+2.4 DIG+2.5 DIG+2.6 DIG+2.7 GND DIG–0.1 DIG[...]

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, 39, 41, 43, 45, 47 DIG+0.<7..0> Isolated i[...]

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 groun d reference. Pin 49 and pin 99 of the I/O connector supply +5 V from the computer power supply via a self-resetting fuse. The fu se resets automatically wi thin[...]

Chapter 3 Signal Connections © National Instruments Corporation 3-7 6527 User Manual Isolation V oltages 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 G ND pins, and from the computer power supply . Isolation barriers provide isolation up to 60 VDC or [...]

Chapter 3 Signal Connections 6527 User Manual 3-8 www .ni.com Sensing DC V oltages When you apply a DC voltage of at least 2 V across the two in put terminals, the 6527 device registers a logic high for th at input. If no voltage is present (a voltage difference of 1 V or less), the 6527 device registers a logic low for that input. DC voltages betw[...]

Chapter 3 Signal Connections © National Instruments Corporation 3-9 6527 User Manual Reducing the For ward Current for High V oltages 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 V)/3 k Ω = 7.5 mA per line. If you wish to[...]

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 lo w ) to an output bit closes the relay , and writing a 1 (logic high) opens the relay . T o both sink and source current with one channel requires an external resistor . Y ou can use the solid-state relays of a 6[...]

Chapter 3 Signal Connections © National Instruments Corporation 3-11 6527 User Manual Figure 3 -6 shows a signal connection e xample for both sinking and sourcing current. The e xample shows a TTL-le vel application with a supply voltage of +5 V . The 6527 provides sink current when the relay is closed. Resistor R L pro vides source current when t[...]

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 under the specified range, the relays return to norm[...]

© National Instruments Corporation 4-1 6527 User Manual 4 Device Over view This chapter contains a functional overview of the 6527 device and explains the operation of each functional unit. The digital filter and change detection options are also described. Functional Over view The block diagram in Figure 4-1 illustrates the key functio nal compon[...]

Chapter 4 Device Over view 6527 User Manual 4-2 www .ni.com Figure 4-1. 6527 Block Diagram PCI Interface Circuitr y 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. Th e PCI MITE is fully complian t with PCI Local Bus Specification 2.0 . Digi[...]

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) Ta b l e 3 - 1 , Port Fu nctionality for 6527 Devices , contains a summary of port functions. Optical Isolation Circuitr y The di[...]

Chapter 4 Device Over view 6527 User Manual 4-4 www .ni.com Y ou can enable fi ltering on as many input lines as you wish. All f iltered lines share the same timing interv al. The interv al ranges from 100 ns to 100 ms. Ho we v er , as shown in T able 4-1, an interval of 200 µs or less does not guarantee blocking of high pulses. Therefore, an inte[...]

Chapter 4 Device Overview © National Instruments Corporation 4-5 6527 User Manual Figure 4 -2 shows a filter configuration with an 800 ns f ilter interval (400 ns filter clock). In practice, a much slo wer filter interv al is recommended. In periods A and B the filter blocks the glitches because the e xternal signal does not remain steadily high f[...]

Chapter 4 Device Over view 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; excessi v e notifications can hurt system performance. For example, if you want to limit the rate of notifications (and interrupts) to a maximum of one change per li[...]

© National Instruments Corporation A-1 6527 User Manual A Specifications This appendix lists the specif ications for the 652 7 de vices. These specifications are typical at 25 ° C unless otherwise noted. Digital I/O PCI/PXI-6527....................... .............. .... 24 optically isolated digital input channels and 24 solid-stat e rel ay outp[...]

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 switching v oltage AC............ .................[...]

Appendix A Specifications for © National Instruments Corporation A-3 6527 User Manual Physical Dimensions (not including connectors) PCI-652 7 .................. .............. ......... 17.5 × 10.7 cm (6. 9 × 4.2 in.) PXI-652 7 .................... ............ ......... 16 × 10 cm (6.3 × 3.9 in.) I/O connector..................... ..........[...]

© National Instruments Corporation B-1 6527 User Manual B T echnical Support Resources This appendix describes the comprehensiv e resources av ailable to yo u in the T echnical Sup port section of the National Instruments W e b site and provides technical support telephone numbers for you to use if you hav e trouble connecting to our W eb site or [...]

Appendix B T echnical Support Resour ces 6527 User Manual B-2 www .ni.com Software-Related Resources • Instrument Driver Network —A library with hundreds of instrument dri v ers for contro l of standalone instruments via GPIB, VXI, or serial interfaces. Y ou also can submit a request for a particular instrument dri ver if it does not already ap[...]

© National Instruments Corporation G-1 6527 User Manual Glossar y Pref ix Meanings V alue n- nano- 10 –9 µ- micro- 10 –6 m- milli- 10 –3 k- kilo- 10 3 Numbers/Symbols ° degrees – negati ve of, or minus Ω ohms /p e r % percent ± plus or minus + positi ve of, or plus +5 V +5 V olts signal A A amperes A C alternating current ANSI America[...]

Glossary 6527 User Manual G-2 www .ni.com C C Celsius CA T I installation category (o vervoltage category) I—equipment for which measures are taken to limit transient overv oltages to an appropriate lo w le vel. Examples include signal-le vel, telecommunications, and electronic equipment with transient ov ervoltages smaller than local-le vel main[...]

Glossary © National Instruments Corporation G-3 6527 User Manual I I IH current, input high I IL current, input lo w in. inches I/O input/output I OH current, output high I OL current, output lo w isolation signal conditioning to break ground loo ps and reject high common-mode voltages to protect equipment and users and to ensure accurate measurem[...]

Glossary 6527 User Manual G-4 www .ni.com O optocoupler a de vice that transfers electrical signals b y utilizing light wav es to pro vide coupling with electrical isolation between input and output optical isolation the technique of using an optocoupler to transfer data without electrical continuity , to eliminate high-potential differences and tr[...]

Glossary © National Instruments Corporation G-5 6527 User Manual T TTL transistor-transistor logic, or 5 V digital voltage le vels originally used with transistor-transistor logic typ typical V V volts V cc supply voltage; for e xample, the v oltage a computer supplies to its plug-in de vices VDC v olts direct current VI virtual instrument—a com[...]

© 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 equipment, 1-5 requirements for getting started, [...]

Index 6527 User Manual I-2 www .ni.com E environment specifications, A-3 equipment, optional, 1-5 F filtering. See dig ital 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, 2-1 to 2-2 I input channels, 3-7 inputs, optica[...]

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. reducing forwar d current for high voltages, 3-[...]