National Instruments PC-DIO-24 manual

© Copyright 1989, 1995 National Instruments Corporation. All Rights Reserved. PC-DIO-24 User Manual Digital I/O Board for the IBM PC/XT/AT September 1995 Edition Part Number 320288B-01[...]

National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin, TX 78730-5039 (512) 794-0100 Technical support fax: (800) 328-2203 (512) 794-5678 Branch Offices: Australia 03 9 879 9422, Austria 0662 45 79 90 0, Belgium 02 757 00 20, Canada (Ontario) 519 622 9310, Canada (Québec) 514 694 8521, Denmark 45 76 26 00, Finland 90 527 2321[...]

Limited Warranty The PC-DIO-24 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 defective during the warranty period. This warranty includes parts and l[...]

WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS National Instruments products are not designed with components and testing intended to ensure a level of reliability suitable for use in treatment and diagnosis of humans. Applications of National Instruments products involving medical or clinical treatment can create a pot[...]

FCC/DOC Radio Frequency Interference Compliance This equipment generates and uses radio frequency energy and, if not installed and used in strict accordance with the instructions in this manual, may cause interference to radio and television reception. This equipment has been tested and found to comply with the following two regulatory agencies: Fe[...]

© National Instruments Corporation vii PC-DIO-24 User Manual Contents About This Manual ............................................................................................................. xi Organization of This Manual ......................................................................................... xi Conventions Used in This Ma[...]

Contents PC-DIO-24 User Manual viii © National Instruments Corporation Chapter 4 Register-Level Programming ......................................................................................... 4-1 Introduction .................................................................................................................... 4-1 82C55A Modes [...]

Contents © National Instruments Corporation ix PC-DIO-24 User Manual Figures Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware ................................................................................................... 1-3 Figure 2-1. PC-DIO-24 Parts Locator Diagram ................................[...]

© National Instruments Corporation xi PC-DIO-24 User Manual About This Manual This manual describes the mechanical and electrical aspects of the PC-DIO-24 and contains information concerning its operation and programming. The PC-DIO-24 is a 24-bit parallel, digital I/O interface designed around an 82C55A programmable peripheral interface (PPI). Th[...]

About This Manual PC-DIO-24 User Manual xii © National Instruments Corporation • The Index alphabetically lists the topics in this manual, including the page where you can find each one. Conventions Used in This Manual The following conventions are used in this manual. bold Bold text denotes menus, menu items, or dialog box buttons or options. b[...]

About This Manual © National Instruments Corporation xiii PC-DIO-24 User Manual • Your SCXI hardware user manuals—If you are using SCXI, read these manuals next for detailed information about signal connections and module configuration. They also explain in greater detail how the module works and contain application hints. • Your DAQ hardwar[...]

© National Instruments Corporation 1-1 PC-DIO-24 User Manual Chapter 1 Introduction This chapter describes the PC-DIO-24, lists what you need to get started, describes software programming choices, optional equipment, and custom cables, and explains how to unpack the PC-DIO-24. About the PC-DIO-24 Thank you for purchasing the National Instruments [...]

Introduction Chapter 1 PC-DIO-24 User Manual 1-2 © National Instruments Corporation With the PC-DIO-24, the PC can serve as a digital I/O system controller for laboratory testing, production testing, and industrial process monitoring and control. Detailed specifications of the PC-DIO-24 are in Appendix A, Specifications . What You Need to Get Star[...]

Chapter 1 Introduction © National Instruments Corporation 1-3 PC-DIO-24 User Manual NI-DAQ Driver Software The NI-DAQ driver software is included at no charge with all National Instruments DAQ hardware. NI-DAQ is not packaged with SCXI or accessory products, except for the SCXI-1200. NI -DAQ has an extensive library of functions that you can call [...]

Introduction Chapter 1 PC-DIO-24 User Manual 1-4 © National Instruments Corporation Register-Level Programming The final option for programming any National Instruments DAQ hardware is to write register- level software. Writing register-level programming software can be very time-consuming and inefficient, and is not recommended for most users. Ev[...]

Chapter 1 Introduction © National Instruments Corporation 1-5 PC-DIO-24 User Manual • Electronic Products Division/3M (part number 3425-7650) • T&B/Ansley Corporation (part number 609-5041CE) The standard ribbon cable (50-conductor, 28 AWG, stranded) that can be used with these connectors is as follows: • Electronic Products Division/3M [...]

Introduction Chapter 1 PC-DIO-24 User Manual 1-6 © National Instruments Corporation Unpacking Your PC-DIO-24 board 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: • Grou[...]

© National Instruments Corporation 2-1 PC-DIO-24 User Manual Chapter 2 Configuration and Installation This chapter describes how to configure and install the PC-DIO-24, including I/O connector signal descriptions, handshake timing diagrams, and cabling instructions. Board Configuration The PC-DIO-24 contains one DIP switch and two jumpers to confi[...]

Configuration and Installation Chapter 2 PC-DIO-24 User Manual 2-2 © National Instruments Corporation 4 3 2 1 NATION AL INSTRUMENTS    1U 2 2W 1 3F 1 4W 2 Figure 2-1. PC-DIO-24 Parts Locator Diagram Base I/O Address Settings The base I/O address for the PC-DIO-24 is determined by the switches at position U2 (see Figure 2-1). The switches [...]

Chapter 2 Configuration and Installation © National Instruments Corporation 2-3 PC-DIO-24 User Manual U2 DIP switches, press the side marked OFF to select a binary value of 1 for the corresponding address bit. Press the other side of the switch to select a binary value of 0 for the corresponding address bit. Figure 2-2 shows two possible switch se[...]

Configuration and Installation Chapter 2 PC-DIO-24 User Manual 2-4 © National Instruments Corporation Interrupt Selection There are two sets of jumpers for interrupt selection on the PC-DIO-24 board. W1 is used for selecting the interrupt enable line. W2 is for selecting the interrupt level. The location of these jumpers is shown in Figure 2-1. In[...]

Chapter 2 Configuration and Installation © National Instruments Corporation 2-5 PC-DIO-24 User Manual The PC-DIO-24 can share interrupt lines with other devices by using a tristate driver to drive its selected interrupt lines. Installation The PC-DIO-24 can be installed in any unused 8-bit or 16-bit expansion slot in your computer. After you make [...]

Configuration and Installation Chapter 2 PC-DIO-24 User Manual 2-6 © National Instruments Corporation Signal Connections I/O Connector Pin Description Figure 2-5 shows the pin assignments for the PC-DIO-24 digital I/O connector. Warning: Connections that exceed any of the maximum ratings of input or output signals on the PC-DIO-24 may result in da[...]

Chapter 2 Configuration and Installation © National Instruments Corporation 2-7 PC-DIO-24 User Manual Signal Connection Descriptions Pin Signal Name Description 1, 3, 5, 7, 9, 11, 13, 15 PC<7..0> Port C—Bidirectional data lines for port C. PC7 is the MSB, PC0 the LSB. 17, 19, 21, 23, 25, 27, 29, 31 PB<7..0> Port B—Bidirectional dat[...]

Configuration and Installation Chapter 2 PC-DIO-24 User Manual 2-8 © National Instruments Corporation Timing Specifications This section lists the timing specifications for handshaking with the PC-DIO-24. The handshaking lines STB* and IBF synchronize input transfers. The handshaking lines OBF* and ACK* synchronize output transfers. The following [...]

Chapter 2 Configuration and Installation © National Instruments Corporation 2-9 PC-DIO-24 User Manual Mode 1 Input Timing The following figure illustrates the timing specifications for an input transfer in mode 1. T3 T5 T6 T7 T4 T1 T2 STB* IBF INTR RD* D ATA Name Description Minimum Maximum T1 STB* pulse width 100 – T2 STB* = 0 to IBF = 1 – 15[...]

Configuration and Installation Chapter 2 PC-DIO-24 User Manual 2-10 © National Instruments Corporation Mode 1 Output Timing The following figure illustrates the timing specifications for an output transfer in mode 1. T2 T3 WR* OBF* INTR DA T A T4 T6 T5 ACK* T1 Name Description Minimum Maximum T1 WR* = 0 to INTR = 0 – 250 T2 WR* = 1 to output –[...]

Chapter 2 Configuration and Installation © National Instruments Corporation 2-11 PC-DIO-24 User Manual Mode 2 Bidirectional Timing The following figure illustrates the timing specifications for bidirectional transfers in mode 2. T2 T1 WR* OBF* INTR ACK* D ATA T6 T7 T3 T4 T10 STB* T9 T8 T5 IBF RD* Name Description Minimum Maximum T1 WR* = 1 to OBF*[...]

© National Instruments Corporation 3-1 PC-DIO-24 User Manual Chapter 3 Theory of Operation This chapter contains a functional overview of the PC-DIO-24 board and explains the operation of each functional unit making up the PC-DIO-24. The block diagram in Figure 3-1 illustrates the key functional components of the PC-DIO-24 board. I/O Connector Int[...]

Theory of Operation Chapter 3 PC-DIO-24 User Manual 3-2 © National Instruments Corporation Address Decoder The base address used by the board is determined by an onboard switch setting. The address on the PC I/O Channel bus is monitored by the address decoder. If the address on the bus matches the selected I/O base address of the board, the board [...]

© National Instruments Corporation 4-1 PC-DIO-24 User Manual Chapter 4 Register-Level Programming This chapter describes in detail the address and function of each of the PC-DIO-24 control and status registers. This chapter also includes important information related to register-level programming the PC-DIO-24. The PC-DIO-24 is a parallel, digital[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-2 © National Instruments Corporation Mode 0 This mode can be used for simple input and output operations for each of the ports. No handshaking is required; data is simply written to or read from a selected port. Mode 0 has the following features: • Two 8-bit ports (A and B) and two 4-b[...]

Chapter 4 Register-Level Programming © National Instruments Corporation 4-3 PC-DIO-24 User Manual Register Map The following table lists the address map for the PC-DIO-24. The registers PORTA, PORTB, PORTC, and CNFG are 8-bit registers in the 82C55A. Table 4-1. PC-DIO-24 Address Map Register Offset Address (Hex) Size Type PORTA PORTB PORTC CNFG 0x[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-4 © National Instruments Corporation D2 D1 D0 D5 D4 D3 D7 D6  (high nibble) 1 = input 0 = output Control W ord Flag 1 = mode set  00 = mode 0 01 = mode 1 1X = mode 2 Mode Selection  1 = input 0 = output Port A Port C  (lo w nibble) 1 = input 0 = output[...]

Chapter 4 Register-Level Programming © National Instruments Corporation 4-5 PC-DIO-24 User Manual Table 4-2. Port C Set/Reset Control Words Number Bit Set Bit Reset Bit Set or Control Word Control Word Reset in Port C 0 0xxx0001 0xxx0000 xxxxxxxn 1 0xxx0011 0xxx0010 xxxxxxnx 2 0xxx0101 0xxx0100 xxxxxnxx 3 0xxx0111 0xxx0110 xxxxnxxx 4 0xxx1001 0xxx[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-6 © National Instruments Corporation Table 4-3. Mode 0 I/O Configurations Control Word Group A Group B Number Bit Port A Port C 1 Port B Port C 2 76543210 0 10000000 Output Output Output Output 1 10000001 Output Output Output Input 2 10000010 Output Output Input Output 3 10000011 Output [...]

Chapter 4 Register-Level Programming © National Instruments Corporation 4-7 PC-DIO-24 User Manual /* EXAMPLE 1*/ outp(cnfg,0x80); /* Ports A, B, and C are outputs. */ outp(porta,0x12); /* Write data to port A. */ outp(portb,0x34); /* Write data to port B. */ outp(portc,0x56); /* Write data to port C. */ /* EXAMPLE 2*/ outp(cnfg,0x90); /* Port A is[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-8 © National Instruments Corporation During a mode 1 data read transfer, the status of the handshaking lines and interrupt signals can be obtained by reading port C. The port C status-word bit definitions for an input transfer are shown as follows. The following are the port C status-wor[...]

Chapter 4 Register-Level Programming © National Instruments Corporation 4-9 PC-DIO-24 User Manual Mode 1 Input Programming Example Main() { #define BASE_ADDRESS 0x210 /* Board located at address 210. */ #define PORTAoffset 0x00 /* Offset for port A */ #define PORTBoffset 0x01 /* Offset for port B */ #define PORTCoffset 0x02 /* Offset for port C */[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-10 © National Instruments Corporation The control word written to the CNFG Register to configure port B for output in mode 1 is shown as follows. Notice that port B does not have extra input or output lines from port C. 1 XXX X 10X 76543210 During a mode 1 data write transfer, the status[...]

Chapter 4 Register-Level Programming © National Instruments Corporation 4-11 PC-DIO-24 User Manual At the digital I/O connector, port C has the following pin assignments when in mode 1 output. Notice that the status of ACKA* and ACKB* is not included when port C is read. PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 OBF A* ACKA* I/O?[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-12 © National Instruments Corporation Mode 2–Bidirectional Bus Mode 2 has an 8-bit bus that can transfer both input and output without changing the configuration. The data transfers are synchronized with handshaking lines in port C. This mode uses only port A; however, port B can be us[...]

Chapter 4 Register-Level Programming © National Instruments Corporation 4-13 PC-DIO-24 User Manual Bit Name Description (continued) 4 INTE2 Interrupt Enable Bit for Input—If this bit is set, interrupts are enabled from the 82C55A for IBFA. Controlled by bit set/reset of PC4. 3 INTRA Interrupt Request Status—If INTE1 is high and IBFA is high, t[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-14 © National Instruments Corporation /* EXAMPLE 1*/ outp(cnfg,0xC0); /* Port A is in mode 2. */ while (!(inp(portc) & 0x80)); /* Wait until OBFA* is set, indicating that the data last written to port A has been read.*/ outp(porta,0x67); /* Write the data to port A. */ while (!(inp(p[...]

Chapter 4 Register-Level Programming © National Instruments Corporation 4-15 PC-DIO-24 User Manual /* EXAMPLE 3–Set up interrupts for mode 1 output for port A. Select PC4 as the interrupt enable bit. */ outp(cnfg,0xA0); /* Port A is an output in mode 1. */ outp(cnfg,0x0D); /* Set PC6 to enable interrupts from 82C55A. */ outp(cnfg,0x0C); /* Clear[...]

Register-Level Programming Chapter 4 PC-DIO-24 User Manual 4-16 © National Instruments Corporation Table 4-4. Interrupt Enable Signals for All Mode Combinations Port A Port A Port B Port B Port A Port A Port B Port A Interrupt Mode 2 Mode 2 Mode 1 Mode 1 Mode 1 Mode 1 Mode 0 Mode 0 Enable Output Input Output Input Output Input Bit No No No No No N[...]

© National Instruments Corporation A-1 PC-DIO-24 User Manual Appendix A Specifications This appendix lists the specifications for the PC-DIO-24 board. These specifications are typical at 25 ° C, unless otherwise stated. The operating temperature range is 0 ° to 70 ° C. Digital I/O Number of channels .............................................[...]

Specifications Appendix A PC-DIO-24 User Manual A-2 © National Instruments Corporation Physical Dimensions .................................................................. 17.5 by 9.9 cm (6.9 in. by 3.9 in.) I/O connector ............................................................... 50-pin male ribbon-cable connector Power Requirement (from PC[...]

© National Instruments Corporation B-1 PC-DIO-24 User Manual Appendix B I/O Connector This appendix describes the pinout and signal names for the I/O connector on the PC-DIO-24. Figure B-1 shows the PC-DIO-24 digital I/O connector. 12 34 56 78 9 10 1 1 12 13   14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 4[...]

© Na t ion a l I ns tr u men ts C or po ra ti o n C- 1 PC -DIO-24 User Manual Appendix C OKI 82C55A Data Sheet * T h is appen d ix conta in s t h e man u factur er d ata s h ee t fo r the OK I Se m ic o nd u ctor 8 2C5 5 A CMO S pr ogr amma ble p er iphera l int e rfa c e (PPI ). Th i s in terfac e i s u s e d on th e DAQCard-DI O-24. * C o py r i[...]

Appendix C OKI 82C55A Data Sheet PC -DIO-24 User Manual C- 2 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © Na t ion a l I ns tr u men ts C or po ra ti o n C- 3 PC -DIO-24 User M anual[...]

Appendix C O KI 82C55A Data Sheet PC -DIO-24 User Manual C- 4 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © Na t ion a l I ns tr u men ts C or po ra ti o n C- 5 PC -DIO-24 User M anual[...]

Appendix C O KI 82C55A Data Sheet PC -DIO-24 User Manual C- 6 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © Na t ion a l I ns tr u men ts C or po ra ti o n C- 7 PC -DIO-24 User M anual[...]

Appendix C O KI 82C55A Data Sheet PC -DIO-24 User Manual C- 8 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © Na t ion a l I ns tr u men ts C or po ra ti o n C- 9 PC -DIO-24 User M anual[...]

Appendix C O KI 82C55A Data Sheet PC -DIO-24 User Manual C- 10 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © N at ion a l I ns t ru me nt s Co rp or at i on C-1 1 PC -DIO-24 User M anual[...]

Appendix C O KI 82C55A Data Sheet PC -DIO-24 User Manual C- 12 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © N at ion a l I ns t ru me nt s Co rp or at i on C-1 3 PC -DIO-24 User M anual[...]

Appendix C O KI 82C55A Data Sheet PC -DIO-24 User Manual C- 14 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © N at ion a l I ns t ru me nt s Co rp or at i on C-1 5 PC -DIO-24 User M anual[...]

Appendix C O KI 82C55A Data Sheet PC -DIO-24 User Manual C- 16 © Natio nal Inst rument s Corpora tion[...]

Appendix C OKI 82C55A Dat a Sheet © National Instruments Corporation C-17 PC-DIO-24 User Manual[...]

© National Instruments Corporation D - 1 PC-DIO-24 User Manual Appendix D Customer Communication __________________________________________________ _ For your convenience, this appendix contains forms to help you gather the information necessary to help us solve technical problems you might have as well as a form you can use to comment on the prod[...]

Technical Support Form ___________________________________________________ Photocopy this form and update it each time you make changes to your software or hardware, and use the completed copy of this form as a reference for your current configuration. Completing this form accurately before contacting National Instruments for technical support help[...]

PC-DIO-24 Hardware and Software Configuration Form ___________________________________________________ Record the settings and revisions of your hardware and software on the line to the right of each item. 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[...]

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: PC-DIO-24 User Manual Edition Date: September 1995 Part Number: 320288B-01 Please comment on the [...]

© National Instruments Corporation Glossary-1 PC-DIO-24 User Manual Glossary ___________________________________________________ Prefix Meaning Value µ - micro- 10 -6 m- milli- 10 -3 k- kilo- 10 3 M- mega- 10 6 ° degrees Ω ohms % percent A amperes AWG American Wire Gauge BCD binary-coded decimal C Celsius DMA direct memory access hex hexadecim[...]

© National Instruments Corporation Index- 1 PC-DIO-24 User Manual Index Special Characters +5 V signal (table), 2-7 82C55A Programmable Peripheral Interface. See OKI 82C55A Programmable Peripheral Interface. A ACK* signal description (table), 2-8 mode 1 output timing, 2-10 mode 2 bidirectional timing, 2-11 address, setting. See base I/O address. a[...]

Index PC-DIO-24 User Manual Index- 2 © National Instruments Corporation I IBF signal description (table), 2-8 mode 1 input timing, 2-9 mode 2 bidirectional timing, 2-11 IBFA bit, Port C, 4-8, 4-12 IBFB bit, Port C, 4-8 installation. See also configuration. procedure for, 2-5 unpacking the PC-DIO-24, 1-6 INTE1 bit, Port C, 4-12 INTE2 bit, Port C, 4[...]

Index © National Instruments Corporation Index- 3 PC-DIO-24 User Manual N NI-DAQ driver software, 1-3 O OBF* signal description (table), 2-8 mode 1 output timing, 2-10 mode 2 bidirectional timing, 2-11 OBFA* bit, Port C, 4-10 OBFB* bit, Port C, 4-10, 4-12 OKI 82C55A Programmable Peripheral Interface capabilities, 1-1 data sheet, C-1 to C-17 modes [...]

Index PC-DIO-24 User Manual Index- 4 © National Instruments Corporation mode 1 strobed output, 4-9 to 4-11 control words written to CNFG register (figure), 4-9 to 4-10 Port C pin assignments (figure), 4-11 Port C status-word bit definitions, 4-10 programming example, 4-11 mode 2 bidirectional bus, 4-12 to 4-14 control word written to CNFG Register[...]