IOD-72 Manual - ACCES I/O Products
Contents
1. STANDARD ADDRESS ASSIGNMENTS FOR 286 386 486 COMPUTERS 000 01F DMA Controller 1 020 03F INT Controller 1 Master 040 05F Timer 060 06F 8042 Keyboard 070 07F Real Time Clock NMI Mask 080 09F DMA Page Register 0A0 0BF INT Controller 2 0 0 00 DMA Controller 2 OFO Clear Math Coprocessor Busy OF1 Reset Coprocessor OF8 0FF Arithmetic Processor 1F0 1F8 Fixed Disk 200 207 Game 278 27F Parallel Printer Port 2 2F8 2FF Asynchronous Comm n Secondary 300 31F Prototype Card 360 36F Reserved 378 37F Parallel Printer Port 1 380 38F SDLC or Binary Synchronous Comm n 2 0 Binary Synchronous Comm n 1 3B0 3BF Monochrome Display Printer 3C0 3CE Local Area Network 3D0 3DF Color Graphic Monitor 3F0 3F7 Floppy Diskette Controller 3F8 3FF Asynchronous Comm n Primary To set a desired board address refer to the illustrated Board Address setup program provided with the card Type the desired address in hexadecimal code and the graphic display shows you how to set the ADDRESS SETUP switches These switches are marked A4 A9 and form a binary representation of the address in negative true logic Assign O to all ADDRESS SETUP switches turned ON and assign 1 to all ADDRESS SETUP switches turned OFF The following example illustrates switch selection corresponding to hex 200 or binary 10 1101 xxxx The xxxx represents address lines A2 A1 and used on the Card to select individual registers a2. ADDRESS DECODE AND BUS INTERFACE TYPICAL OF THREE 3 PORTA GROUP POR PORTCLO DATA BUFFERS COMPUTER 10 BUS ozmmmncmp AOAOMZZOO IRQ INTERRUPT LEVEL SELECT ENABLE EXTERNAL INTERRUPT 2 2 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL OPTION SELECTION Refer to the setup programs on the CD provided with the card Also refer to the IOD 72 Card BLOCK DIAGRAM on the previous pages and the OPTION SELECTION MAP on the following page when reading this section of the manual Board Address selection is covered both by the setup program and by section 4 of this manual Interrupts are accepted on the I O connector pin 9 port C3 The Interrupt signal is positive true Interrupts are enabled if the IEN jumper is installed or if the IP jumper is installed and the C7 I O line connector pin 1 is held low Interrupts are disabled if neither the IEN or IP jumpers are installed or if the IP jumper is installed but the C7 I O line is high Interrupts are directed to levels 2 through 7 10 through 12 14 and 15 by jumpers installed at locations labeled IRQ2 through IRQ15 The foregoing are the only manual setups necessary to use the IOD 72 Input Output selection is done via software by writing to a control register in each PPI as described in the PROGRAMMING section of this manual 3 1 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D OdNI LdNI gt
3. include dos h int sensors at arm 15 int sensors now 15 bit by bit status of sensors at current time When compared against status of sensors at arm indicates break in if there is a change int arming stations variables representing all four arming stations int old arming stations If the value changes toggle alarm ON OFF char key useful temporary variable int i useful temporary variable used in loops int j useful temporary variable initialize outportb BASEADDR 3 0x93 X outportb addr byte is C s method of accessing port memory This procedure sets Port A B and C LO as inputs and Port C HI as outputs Address 303 hex is the control register The bit pattern needed to set the desired mode and port designation is 10010011 93 hex procedure initialize read sensors int ary unsigned char tempA unsigned char tempB tempA inportb BASEADDR tempB inportb BASEADDR 1 for i 0 i lt 8 i if tempA gt gt i 8 ON this determines if bit i is on and sets the corre ary ON3 sponding array element to ON if it is If not sets else sets the array element to OFF ary OFF for i 0 i lt 8 i if tempB gt gt i amp ary ON else ary OFF procedure read_sensors get_status int temp 6 7 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL temp inportb BASEADDR 2 this sets
4. jumpers for selected options See OPTION SELECTION section of this manual Select the base address on the card See ADDRESS SELECTION section of this manual Loosen the nuts on the strain relief bar and swing top end free Install the card in an I O expansion slot If convenient select a slot which is adjacent to a vacant slot because this will make cable installation easier Thread the I O cables one by one through the cutout in the mounting bracket and plug them into the headers Smooth the cables as close as possible to the card and while holding them close to the surface of the card swing the strain relief bar into position and tighten nuts Inspect for proper fit of the card and cables and tighten screws Replace the computer cover Input Output cable connections are via two 50 pin headers on the card A blank mounting bracket is provided with units marked for CE European Certification and for these units CE certifiable cable and break out methodology cables connect to chassis ground at the aperture shielded twisted pair wiring etc must be used Also it is important that the card bracket be properly screwed in place and that there be a positive chassis ground 1 5 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL FUNCTIONAL DESCRIPTION FEATURES 72 Channels of Digital Input Output All 72 I O Lines Buffered on the Board Four and Eight Bit Groups Independently Selectable for I O Hysteresis correction and Pul
5. polls those same bits PSAMPLES SAMPLE1 A Pascal program that writes a sequence of values to Port A and reads and displays the values in Ports A amp B SETUP This program is supplied with the IOD 72 card as a tool for you to use in configuring jumpers and switches on the card It is menu driven and provides pictures of the card on the computer monitor You make simple keystrokes to select the functions In turn the pictures then change to show how the jumpers or switches should be placed to effect your choices The setup program is a stand alone program that can be run at any time It does not require the IOD 72 to be plugged into the computer for any part of the setup The program is self explanatory with operation instructions and on line help 5 1 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL PROGRAMMING The IOD 72 is an mapped device that is easily configured from any language and any language can easily perform digital I O through the card s ports This is especially true if the form of the data is byte or word wide All references to the 1 ports would be in absolute port addressing However a table could be used to convert the byte and word data ports to a logical reference If you are working with VisualBASIC for Windows then the VBACCESS utility provided with your card provides InPort and OutPort capability DEVELOPING YOUR APPLICATION SOFTWARE If you wish to gain a better understanding of the pr
6. representation Other than the above no other warranty expressed or implied shall apply to any and all such equipment furnished or sold by ACCES 9 1 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL APPENDIX A PROGRAMMABLE PERIPHERAL INTERFACE DATA SHEETS The data sheets in this Appendix are provided to help your understanding of the 8255 5 PPI which is made by a number of companies These sheets are reprinted with permission of Mitsubishi Electric Corp Copyright 1987 The information diagrams and all other data included are believed to be correct and reliable However no responsibility is assumed by Mitsubishi Electric Corporation for their use nor for any infringements of patents or other rights belonging to third parties which may result from their use Values shown on these data sheets are subject to change for product improvement A 1
7. status to the lower half of Port C the half defined in Initialize to be input for four arming switches return temp amp OxOF function get_arming_status ALARM long int temp 0 sound 2000 this starts the computer s speaker outportb BASEADDR 0xF0 this sets Port C upper nybble bits to ON 1111 binary F hex dof arming stations get status this activates four alarm outputs and ifrarming stations old arming stations then toggles Port C Hi LSB which temp 2000000000 dis armed maybe used with an ext l speaker outportb BASEADDR 2 inportb BASEADDR 2 0x1 0 while temp 2000000000 nosound procedure ALARM main time_t start initialize clscr goto 5 5 printf This IOD card demonstration program simulates an alarm printf system program for 16 sensors four arming stations and printf four separate alarm outputs which could be routed to printf siren lights silent alarm etc n printf n printf THIS PROGRAM IS FOR DEMONSTRATION PURPOSES ONLY AND n printf IS NOT MEANT TO BE USED AS AN ACTUAL ALARM SYSTEM n printf n printf n printf Press any key to begin program n key getch old arming stations get status clrscr read_sensors sensors_now 1 0 1 lt 15 1 if lsensors_nowl i printf Sensor d s n i is open printf n printf Press ESC to re scan RETURN to beg
8. temporary variable VAR i integer useful temporary variable used in loops VAR integer procedure initialize_board this procedure sets MODE 0 as active and sets Port A B and C LO as input and Port C HI as output begin port BASEADDR 3 93 port X is Pascal s method of accessing the port memory This code sets the port memory at address 303 hex and the control register to 93 hex because the bit pattern to set the desired mode and port designations is 10010011 which equals 93 hex end procedure initialize board procedure read sensors VAR ary sensor ary VAR tempA byte this procedure fetches data from Ports VAR tempB byte A and and returns a binary representation of each sensor begin tempA port BASEADDR this procedure loads tempA and tempB with corresponding inputs from the IOD card tempB port BASEADDR 1 for i 0 to 7 do begin if tempA shri AND ON gt O then this tests to see if bit i is ON and sets the ary i ON corresponding array element to ON else ary i OFF if it is else the array element is set to OFF end for i 0 to 7 do begin 6 4 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL if tempB shr i AND ON gt 0 then ary i 8 ON in order to get Port B into array elements 8 thru 15 else we add 8 to the bit numbers in the assignment ary i 8 OFF end end procedure read_sensors function get_status integer var t
9. used For information about the format of the registry key consult the card specific samples provided with the hardware In Windows NT NTioPCI SYS runs each time the computer is booted thereby refreshing the registry as PCI hardware is added or removed In Windows 95 98 NT PCIFind EXE places itself in the boot sequence of the OS to refresh the registry on each power up This program also provides some COM configuration when used with PCI COM ports Specifically it will configure compatible COM cards for IRQ sharing and multiple port issues 1 3 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL WIN32IRQ This directory provides a generic interface for IRQ handling in Findbase exe Poly exe Risc bat RISCTerm exe Windows 95 98 NT Source code is provided for the driver greatly simplifying the creation of custom drivers for specific needs Samples are provided to demonstrate the use of the generic driver Note that the use of IRQs in near real time data acquisition programs requires multi threaded application programming techniques and must be considered an intermediate to advanced programming topic Delphi C Builder and Visual C samples are provided DOS utility to determine an available base address for ISA bus non Plug n Play cards Run this program once before the hardware is installed in the computer to determine an available address to give the card Once the address has been determined run the setup progr
10. ACCES I O PRODUCTS INC 10623 Roselle Street San Diego CA 92121 Tel 619 550 9559 FAX 619 550 7322 DIGITAL INPUT OUTPUT CARD IOD 72 USER MANUAL File MIOD 72 D2 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL NOTICES The information in this document is provided for reference only ACCES does not assume any liability arising out of the application or use of the information or products described herein This document may contain or reference information and products protected by copyrights or patents and does not convey any license under the patent rights of ACCES nor the rights of others IBM PC PC XT and PC AT are registered trademarks of the International Business Machines Corporation Printed in USA Copyright 1995 by ACCES I O PRODUCTS INC 10623 Roselle Street San Diego CA 92121 All rights reserved DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL INSTALLATION tr eO eC o es 1 1 CD INSTALLATION 1 1 3 5 INCH DISKETTE INSTALLATION 1 1 DIRECTORIES CREATED ON THE HARD DISK 1 2 INSTALLING THE CARD 1 5 FUNCTIONAL DESCRIPTION 2 1 FEATUBES 2 1 5 2 1 DESCRIPTION rare 2 1 BLOCK 2 2 O PTION SELEGTION Rr a 3 1 OPTION SELECTION MAP 3 2 ADD
11. RESS SELECTION 4 1 ADDRESS ASSIGNMENTS FOR PC AND PO XT 4 1 ADDRESS ASSIGNMENTS FOR 286 386 486 4 2 SOFTWARE Fr a n nn FD LA DL 5 1 SET 5 1 PROGRAMMING 6 1 ADDRESS SELECTION TABLE 6 1 PPI CONTROL REGISTER BIT ASSIGNMENTS 6 2 PROGRAMMING EXAMPLE 6 3 SAMPLE PROGRAMS 6 4 TURBO PASCAL PROGRAM 6 4 TURBO C 6 7 CONNECTOR PIN ASSIGNMENTS 7 1 SPEGIEIGATION no no Ce en 8 1 WARRANIN terete cet AAA DA A c D 9 1 APPENDDCA ER A 1 PROGRAMMABLE PERIPHERAL INTERFACE DATA SHEETS A 1 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL INSTALLATION The software provided with this card is contained on either one CD or multiple diskettes and must be installed onto your hard disk prior to use To do this perform the following steps as appropriate for your software format and operating system Substitute the appropriate drive letter for your CD ROM or disk drive where you see or Al respectively in the examples below CD INSTALLATION DOS WIN3 x 1 Place the CD into your CD ROM drive 2 Type HEj to change the active drive to the CD ROM drive 3 Type to run the install program 4 Follow the on scre
12. acked for handling and returned with freight prepaid to the ACCES designated Service Center and will be returned to the customer s user s site freight prepaid and invoiced COVERAGE First Three Years Returned unit part will be repaired and or replaced at ACCES option with no charge for labor or parts not excluded by warranty Warranty commences with equipment shipment Following Years Throughout your equipment s lifetime ACCES stands ready to provide on site or in plant service at reasonable rates similar to those of other manufacturers in the industry EQUIPMENT NOT MANUFACTURED BY ACCES Equipment provided but not manufactured by ACCES is warranted and will be repaired according to the terms and conditions of the respective equipment manufacturer s warranty GENERAL Under this Warranty liability of ACCES is limited to replacing repairing or issuing credit at ACCES discretion for any products which are proved to be defective during the warranty period In no caseis ACCES liable for consequential or special damage arriving from use or misuse of our product The customer is responsible for all charges caused by modifications or additions to ACCES equipment not approved in writing by ACCES or ifin ACCES opinion the equipment has been subjected to abnormal use Abnormal use for purposes of this warranty is defined as any use to which the equipment is exposed other than that use specified or intended as evidenced by purchase or sales
13. am provided with the hardware to see instructions on setting the address switch and various option selections A generic utility to convert a table of data into an n order polynomial Useful for calculating linearization polynomial coefficients for thermocouples and other non linear sensors A batch file demonstrating the command line parameters of RISCTerm exe A dumb terminal type communication program designed for RS422 485 operation Used primarily with REMOTE ACCES Data Acquisition Pods and our RS422 485 serial communication product line Can be used to say hello to an installed modem RISCTerm stands for Really Incredibly Simple Communications TERMinal INSTALLING THE CARD Before installing the card carefully read the ADDRESS SELECTION and OPTION SELECTION Sections of this manual and configure the card according to your require ments Use the special software program called SETUP provided with the card It supplies visual aids to configure all areas of the board Be especially careful with address selection If the addresses of two installed functions overlap you will experience unpredictable computer behavior If unsure what locations are available you can use the FINDBASE program to locate blocks of available addresses 1 4 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL To install the card Bp mc NO 10 11 Remove power from the computer Remove the computer cover Remove blank I O backplate Install
14. b BASE ADDRESS 0 outporto BASE_ADDRESS 1 0 These instructions set the initial state of ports A and B to all zeroes Port C is not set because it is configured as an input See item c on the previous page DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL PROGRAMMING EXAMPLE The following example in BASIC is provided as a guide to assist you in developing your working software In this example the card base address is 200 hex and I O lines of Port 0 are to be setup as follows PortA Input Port B Output Port C Hi Input Port C Lo Output The first step is to configure the control register Configure bits of the control register as 7 19 O ve DI DU 0 oO D3 D2 Di DO Port C Lo output Port B output Mode 0 Port C Hi input TR Port A input Mode 0 D 1 Mode 0 Active Mode Set This corresponds to 98 hex If the card base address is 200 hex use the C command to write to the control register as follows Base 0x2D0 outportb Base 3 0x98 To read the inputs at Port A and the upper nybble of Port C use the C INPUT command x inportb Base Read Port A x inportb Baseaddr y inportb Base 2 16 Read Port C Hi y inportb Baseaddr 2 gt gt 4 To set outputs high 1 at Port B and the lower nybbl
15. e of Port C outportb Base 1 0xFF Turn on all Port B bits outportbBase 2 0xF Turn on all bits of Port C Lo 6 3 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL SAMPLE PROGRAMS The following sample programs are in TURBO C and TURBO PASCAL languages They Cover a security system that allows you to monitor the status of 16 switches and to automatically trigger four alarms that can be used to turn on lights activate a siren or send a signal to a silent alarm The alarm system in this demonstration has four arming stations which toggle the alarm on or off These programs are also provided on the CD that ACCES supplied with your IOD card TURBO PASCAL PROGRAM CONST BASEADDR 300 declare base address for IOD card CONST ON 1 declare some useful constants CONST OFF 0 fi Pte a TYPE sensor_array array 0 15 of integer creates a type of variable used for sensor data VAR sensors_at_arm sensor_array bit by bit status of sensors when alarm is activated Used to notify user of open windows etc VAR sensors_now bit by bit status of sensors at current time When compared against sensors_at_arm indicates break in if there is a change VAR arming stations integer variables representing all four arming stations If VAR old arming stations integer value changes toggle alarm on off VAR hour min sec hun word variables used to retrieve time VAR key char useful
16. e with Industry Standard I O Racks like Opto 22 Potter amp Brumfield etc Digital Inputs Logic High 2 0 to 5 0 VDC Logic Low 0 5 to 0 8 VDC Input Load Hi 20 uA Input Load Lo 200 uA Digital Outputs Logic High 2 5 VDC min source 15 mA Logic Low 0 5 VDC max sink 24 mA 64 mA optional Power Output 5 VDC from computer bus ext 1A fast blow fuse recommended Power Required 5 VDC at 350 mA typical Size 7 5 Long Environmental Operating Temperature 0 degr to 60 degr C Storage Temperature 50 degr to 120 degr C Humidity O to 9096 RH non condensing 8 1 DIGITAL INPUT OUTPUT CARD 00 72 Rev D USER MANUAL WARRANTY Prior to shipment ACCES equipment is thoroughly inspected and tested to applicable specifications However should equipment failure occur ACCES assures its customers that prompt service and support will be available All equipment originally manufactured by ACCES which is found to be defective will be repaired or replaced subject to the following considerations TERMS AND CONDITIONS If a unit is suspected of failure contact ACCES Customer Service department Be prepared to give the unit model number serial number and a description of the failure symptom s We may suggest some simple tests to confirm the failure We will assign a Return Material Authorization RMA number which must appear on the outer label of the return package All units components should be properly p
17. emp integer begin this sets status to the lower nybble of Port temp port BASEADDR 2 C the half defined by Initialize to be input for get_status temp AND 0F four arming switches end function get_arming_status procedure ALARM var temp longint begin sound 2000 this starts the computer s speaker as siren for the alarm temp 0 port BASEADDR 2 F this sets Port C s lower nybble bits ON repeat arming_stations get_status this activates four alarm outputs and then if arming_stations lt gt old_arming_stations then toggles Port C Hi s LSB which temp 2000000000 disarmed might be used with an external siren port BASEADDR 2 port BASEADDR 2 10 temp temp 1 until temp gt 2000000000 nosound end procedure ALARM begin initialize board clrscr gotoxy 5 5 writeln This is the IOD card demonstration program This writeln program will simulate an alarm system program for writeln sixteen sensors and four arming stations along with writeln four separate alarm outputs which could be routed to writeln a siren lights silent alarm etc writeln writeln THIS PROGRAM IS INTENDED FOR DEMONSTRATION PURPOSES writela ONLY AND IS NOT MEANT TO BE USED AS AN ACTUAL ALARM writeln SYSTEM writeln writeln writeln Press any key to begin program key readkey old arming stations get status this loads the status of the arming switches repeat at the time
18. en prompts to install the software for this card WIN95 98 NT 1 Place the CD into your CD ROM drive 2 The CD should automatically run the install program after 30 seconds If the install program does not run click START RUN and type 8811 click OK or press eed 3 Follow the on screen prompts to install the software for this card 4 Click the to ACCES Web button to check for software updates 3 5 INCH DISKETTE INSTALLATION As with any software package you should make backup copies for everyday use and store your original master diskettes in a safe location The easiest way to make a backup copy is to use the DOS DISKCOPY utility In a single drive system the command is Sr AI fend You will need to swap disks as requested by the system In a two disk system the command is 9 5712142 1 1 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL This will copy the contents of the master disk in drive A to the backup disk in drive B To copy the files on the master diskette to your hard disk perform the following steps 1 Place the master diskette into a floppy drive 2 Change the active drive to the drive that has the diskette installed For example if the diskette is in drive A type 3 and follow the on screen prompts DIRECTORIES CREATED ON THE HARD DISK The installation process will create several director
19. gister This Write only 8 bit register is used to set the mode and direction of the ports At Power Up or Reset all I O lines are set as inputs Each PPI should be configured during initialization by writing to the control registers even if the ports 6 1 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL are only going to be used as inputs Output buffers are automatically set by hardware according to the control register states Note that control registers are located at base address 3 base address 7 and base address B Bit assignments in each of these control registers are as follows PPI CONTROL REGISTER BIT ASSIGNMENTS 5i Port C Lo 0 3 Input 0 Output 1 Port B 1 Input 0 Output 1 Mode Selection Mode 1 0 Mode 0 Port C Hi C4 C7 1 Input 0 Output Port A 1 Input 0 Output Mode Selection 01 Mode 1 00 Mode 0 Mode Set Flag 1 Active Note Mode 1 cannot be used by the IOD 72 without modification Consult factory Thus bits D2 D5 and D6 should always be set to 0 and bit D7 to 1 Similarly the Group 1 ports and the Group 2 ports can be enabled via the Control Register at Base Address 7 and Base Address B respectively The following program fragment in C illustrates the foregoing const BASE ADDRESS 0x300 outportb BASE ADDRESS 3 0x89 This instruction sets the PPI to Mode 0 ports A and B as output and port C as input See item b on the previous page outport
20. gt IOD 72 OPTION SELECTION MAP Cable Strain Relief Bar USER MANUAL DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL ADDRESS SELECTION The IOD 72 Input Output Card occupies 16 bytes of I O space The card base address can be selected anywhere within an I O address range 100 3F0 hex in AT s except 1 0 to 1F8 and 200 3F0 in XT s However two installed cards cannot share the same address If in doubt where to assign the base address of the IOD 72 refer to the following tables and the FINDBASE program to find an available address in your system STANDARD ADDRESS ASSIGNMENTS FOR PC AND PC XT COMPUTERS 000 00F DMA Chip 8237 5 020 021 Interrupt 8259A 040 043 Timer 8253 5 060 063 PPI 8255A 5 080 083 DMA Page Register Mask Register 0CX Reserved Reserved 100 1FF Not usable 200 20F Game Control 210 217 Expansion Unit 220 24F Reserved 278 27F Reserved 2F0 2F7 Reserved 2F8 2FF Asynchronous Comm n Secondary 300 31F Prototype Card 320 32F Fixed Disk 378 37F Printer 380 38C SDLC Communications 380 389 Binary Synchronous Comm Secondary 0 9 Binary Synchronous Comm Primary 3B0 3BF IBM Monochrome Display Printer 3C0 3CF Reserved 3D0 3DF Color Graphics 3E0 3E7 Reserved 3F0 3F7 Diskette 3F8 3FF Asynchronous Comm n Primary These options can not be used together addresses overlap DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL
21. ies on your hard disk If you accept the installation defaults the following structure will exist CARDNAME Root or base directory containing the SETUP EXE setup program used to help you configure jumpers and calibrate the card DOS PSAMPLES A subdirectory of CARDNAME that contains Pascal samples DOS CSAMPLES A subdirectory of CARDNAME that contains C samples WIN32 anguage Subdirectories containing samples for Win95 98 and NT WinRisc exe A Windows dumb terminal type communication program ACCES32 designed for RS422 485 operation Used primarily with REMOTE ACCES Data Acquisition Pods and our RS422 485 serial communication product line Can be used to say hello to an installed modem This directory contains the Windows 95 98 NT driver used to provide access to the hardware registers when writing 32 bit Windows software Several samples are provided in a variety of languages to demonstrate how to use this driver The DLL provides four functions InPortB OutPortB InPort and OutPort to access the hardware This directory also contains the device driver for Windows NT ACCESNT SYS This device driver provides register level hardware access in Windows NT Two methods of using the driver are available through ACCESS32 DLL recommended and through the DevicelOControl handles provided by ACCESNT SYS slightly faster SAMPLES Samples for using ACCES32 DLL are provided in this directory Using this DLL not only ma
22. in alarm scanning key getch while key 13 clrscr for this creates an infinite loop printf Waiting to be armed Press any key to halt program n dof arming stations get status if kbhit abort 0 while arming_stations old arming stations sound 1000 delay 300 6 8 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL nosound printf Alarm system will activate in 15 seconds read sensors sensors at arm old arming stations get status start time NULL do while difftime time NULL start 15 printf n print ALARM SYSTEM ACTIVE AND ARMED n n sound 900 delay 300 nosound j 0 do read_sensors sensors_now for i 1 i lt 16 i ifsensors now i 1 sensors_at_arm i 1 1 for arming stations get status if arming stations old arming stations j 1 flag used to signal alarm is de activated while j 1 start time NULL printf Alarm deactivated at s asctime gmtime amp start sound 900 delay 300 nosound delay 50 sound 900 delay 100 nosound else printf Sensor d has been activated n n j start time NULL printf The time of alarm is s asctime gmtime amp start old arming stations get status ALARM else for this end used to send program back to await re arm 6 9 DIGITAL INPUT OUTPUT CARD 100 72 Rev D USER MANUAL SHARING INTERRUPTS ON THE ISA BUS As n
23. kes the hardware 1 2 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL programming easier MUCH easier but also one source file can be used for both Windows 95 98 and WindowsNT One executable can run under both operating systems and still have full access to the hardware registers The DLL is used exactly like any other DLL so it is compatible with any language capable of using 32 bit DLLs Consult the manuals provided with your language s compiler for information on using DLLs in your specific environment VBACCES This directory contains sixteen bit DLL drivers for use with VisualBASIC 3 0 and Windows 3 1 only These drivers provide four functions similar to the ACCES32 DLL However this DLL is only compatible with 16 bit executables Migration from 16 bit to 32 bit is simplified because of the similarity between VBACCES and ACCES32 PCI This directory contains PCl bus specific programs and information If you are not using an ACCES PCI card this directory will not be installed SOURCE A utility program is provided with source code you can use to determine allocated resources at run time from your own programs in DOS PCIFind exe A utility for DOS and Windows to determine what base address and IRQ are allocated to installed PCI cards This program runs two versions depending on the operating system Windows 95 98 NT displays a GUI interface and modifies the registry When run from DOS or Windows3 x a text interface is
24. l Ups on I O Lines Interrupt and Interrupt Disable Capability 5V Supply Available to the User Compatible with Industry Standard I O Racks like Opto 22 Potter amp Brumfield etc APPLICATIONS Automatic Test Systems Robotics Security Systems Energy Management Relay Monitoring and Control Parallel Data Transfer to PC Sensing Switch Closures or TTL DTL CMOS Logic Driving Indicator Lights or Recorders DESCRIPTION The IOD 72 Board was designed for industrial applications and can be installed in any I O slot of an IBM PC XT AT or compatible computer Each I O line is buffered and capable of sourcing 15 mA or sinking 24mA 64 mA on request The card contains three Programmable Peripheral Interface chips type 8255 5 PPI to provide computer interface to 72 I O lines Each PPI provides three 8 bit ports A B and C Each 8 bit port can be software configured to function as either inputs or output latches Port C can also be configured as four inputs and four output latches The 1 line buffers 74LS245 are configured automatically by hardware logic for input or output use according to direction assignment from a control register in the PPI Two I O lines of each port can be used to interface User Interrupts to the computer Interrupts are buffered and are enabled by jumper installation or by a combination of jumper installation and a digital input line You can use Interrupts 2 through 7 10 through 12 14 and 15 Inte
25. loop writeln writeln ALARM SYSTEM ACTIVE AND ARMED sound 900 short tone indicating that alarm is fully activated delay 300 no sound j 0 the following code compares current status of sensors against status when armed to determine if break in has occurred any change indicates break in repeat read_sensors sensors_now for i 1 to 16 do begin if sensors now i 1 sensors at arm i 1 then j 1 end for arming_stations get_status if arming_stations lt gt old_arming_stations then j i flag used to signal that alarm is de activated until j lt gt 0 if j 1 then begin if j was set to 1 in the above loop then alarm is de activated gettime hour min sec hun writeln Alarm deactivated at hour min sec sound 900 the following code chirps the speaker to indicate disarming delay 100 nosound delay 50 sound 900 delay 100 nosound nosound end end of disarming routine else if alarm begin writeln Sensor j has been activated gettime hour min sec hun writeln The time of alarm is hour min sec ALARM end else 6 6 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL end WHILE this end sends the program back to wait to be re armed end TURBO C PROGRAM define BASEADDR 0x300 declare base address for IOD card define ON 1 create useful constant define OFF 0 Fo include stdio h include conio h include time h
26. ograms listed in the previous section then the information in the following paragraphs will be of interest to you Refer to the data sheets and 8255 5 specification in Appendix A A total of 15 address locations are used by the IOD 72 five for each PPI The PPI s are addressed consecutively with Address bits through AO See Address Selection section 4 as follows ADDRESS SELECTION TABLE Port Assignment Base Address Base Address 1 Base Address 2 Base Address 3 Base Address 4 Base Address 5 Base Address 6 Base Address 7 Base Address 8 Base Address 9 Base Address A Base Address B PA Port 0 PB Port 0 PC Port 0 Control Group 0 PA Port 1 PB Port 1 PC Port 1 Control Group 1 PA Port 2 PB Port 2 PB Port 2 Control Group 2 Read Write Read Write Read Write Write Only Read Write Read Write Read Write Write Only Read Write Read Write Read Write Write Only Base Address Base Address D Base Address E Enable Disable Buffer Grp 0 Write Only Enable Disable Buffer Grp 1 Write Only Enable Disable Buffer Grp 2 Write Only The IOD 72 card uses three 8255 5 PPI s to provide a total of 72 bits input output capability The card is designed to use each of these PPI s in Mode 0 wherein a There are two 8 bit ports A and B and two 4 bit ports C Hi and C Lo b Any port can be configured as an input or an output C Outputs are latched d Inputs are not latched Each PPI contains a control re
27. oted on page 3 1 IOD 72 can facilitate an external interrupt via bit C3 at each 24 bit group On occasion however a system application will require more interrupt levels than are available on the ISA bus While not recommended IRQ sharing is possible Each card that is going to share an IRQ must strictly adhere to a special standard for accessing the IRQ line as follows 1 The interrupt must be held in a high impedance state until asserting an interrupt 2 The interrupt must be asserted in the form of a low signal lasting at least 500 nanoseconds followed by a rising edge and then immediately returning to a high impedance condition 3 The card must contain a status register or flag of some kind to indicate that it generated the interrupt There is an exception to this rule This is the case where only one card of those sharing the interrupt level does not provide a status bit to indicate that it asserted the interrupt but is otherwise capable of sharing the IRQ In this case it may share the interrupt level with other cards if a it is the only card on that IRQ level that does not have a status bit and b it is installed onto the IRQ vector first This makes it the last card to be called in the vector chain This scheme will work because it can be assumed that if every other card in the vector chain did not cause the interrupt then the last card must be the one that did Note that if two cards assert the IRQ line within 500 nanosecond
28. rrupts of all ports one per port are OR ed together I O wiring connections are via 50 pin headers on the board Three flat I O cables connect IOD 72 to termination panels such as ACCES model STA 50 Also this provides compatibility with OPTO 22 Gordos Potter amp Brumfield etc module mounting racks Every second conductor of the flat cables is grounded to minimize the effect of crosstalk 2 1 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL between signals If needed for external circuits 5 VDC power is available on each I O connector pin 49 If you use this power we recommend that you include a 1A fast blow fuse in your circuits in order to avoid possible damage to the host computer in the event of a malfunction in those external circuits The IOD 72 occupies sixteen bytes of I O address space The base address is selectable via a DIP switch anywhere within the range of 000 3FF hex If in doubt how to select a base address check your computer Reference Manual For additional information about setting the base address of IOD 72 see section 4 of this manual Utility software provided with the IOD 72 card is an illustrated setup program Interactive displays show locations and proper settings of DIP switches and jumpers to set up board address interrupt levels and interrupt enable Also sample programs in Turbo C and Turbo Pascal are presented in section 5 of this manual IOD 72 BLOCK DIAGRAM Typical of three sections
29. s of each other the second card in the ISR chain will not be serviced It s possible to alleviate this problem by writing a single ISR that can detect the bit flag on every card and therefore detect the fact that two or more cards report generating an interrupt even though only one interrupt was processed by the CPU 6 10 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL CONNECTOR PIN ASSIGNMENTS Three 50 pin headers are provided on the IOD 72 one for each group of 24 1 0 lines mating connector is an AMP type 1 746285 0 or equivalent Connector pin assignments are listed below Notice that every second line is grounded to minimize crosstalk between signals Assignment Pin Assignment Pin Port C Hi Port C Hi Port C Hi Port C Hi Port C Lo Port C Lo Port C Lo Port C Lo Port B Port B Port B Port B Port B Port B Port B Port B Port A Port A Port A Port A Port A Port A Port A Port A 45 VDC Ground NOTES This line is an port and also an Interrupt Enable This line is an port and also an User Interrupt 7 1 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL SPECIFICATION Features 72 Channels of Digital Input Output All 72 I O Lines Buffered on the Board Four and Eight Bit Groups Independently Selectable for I O Hysteresis correction and 10KQ Pull Ups on 1 Lines Interrupt and Interrupt Disable Capability 5V Supply Available to the User Compatibl
30. t the PPl s See Section 5 PROGRAMMING DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL Representation 2 0 Conversion mutipiers 2 8 2 P t Binary Representation 1 o s o t CAUTION Carefully review the address selection reference table on the previous page before selecting the card address If the addresses of two installed functions overlap you will experience unpredictable computer behavior DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL SOFTWARE ACCES supplies several programs to support the IOD 72 Digital I O card and also to help you develop your applications software These programs are on a CD that comes with your card and consist of a Setup program and sample programs The sample programs are in forms suitable for use with BASIC QuickBASIC C and Pascal The programs as follows FINDBASE Program locates active and available port addresses SETUP IOD 120 Board Setup Program BSAMPLES SAMPLE1 Quickbasic program that writes a sequence of values to Port A and reads and displays the values in Ports A amp B SAMPLE2 AQuickbasic program that displays the bits in Ports A amp B and when an interrupt occurs polls those same bits CSAMPLES SAMPLE1 program that writes a sequence of values to Port A and reads and displays the values in Ports A amp B SAMPLE2 A C program that displays the bits in Ports A amp B and when an interrupt occurs
31. the program is first activated A clrscr change in status would indicate arming read_sensors sensors_now this reads the current status of the sensors for i 0 to 15 do begin which is then displayed to indicate open windows etc if sensors writeln Sensor i 16 open end writeln writeln Press ESC to re scan RETURN to begin alarm scanning 6 5 DIGITAL INPUT OUTPUT CARD IOD 72 Rev D USER MANUAL key readkey until key 13 the repeat until loop gives the user an opportunity to shut open windows or doors and then re scan the sensors clrscr WHILE TRUE do begin this WHILE is used to form an infinite loop Writeln Waiting to be armed or press any key to halt program repeat this repeat until loop continues until arming arming_stations get_status station status changes indicating arming or if key pressed then halt 1 until a key is pressed terminating the program until arming stations old arming stations sound 900 short tone indicating that alarm has been armed delay 300 nosound writeln Alarm system will activate in 15 seconds read sensors sensors at arm old arming stations get status gettime hour min sec hun this code reads the system clock for the current 5 15 time which is used to delay for 15 seconds if i gt 60 then i i 60 repeat gettime hour min sec hun until sec i end of delay
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