PCI-INT32 User`s Guide - Coulbourn Instruments
Contents
1. UT Softwine 7975 Documentation LN LU m In addition to this hardware user s guide you should also receive the DAQ Software Quick Start available in PDF at www mccdaq com PDFmanuals DAQ Software Quick Start pdf Please read this booklet completely before installing any software and hardware DAQ Software Quick Start 2 1 PCI INT32 User s Guide Installing the PCI INT32 Optional components If you ordered any of the following products with your board they should be included with your shipment Universal Library Universal Library Data Acquisition and Control Programming Tools also includes the nstaCal installation package the Universal Library User s Guide and the Universal Library Function Reference Cables C50FF x Signal termination and conditioning accessories MCC provides signal termination and signal conditioning products for use with the PCI INT32 Refer to the Field wiring signal termination and conditioning section for a complete list of compatible accessory products Unpacking the board The PCI INT32 board is shipped in an antistatic container to prevent damage by an electrostatic discharge To avoid such damage perform the following procedure when unpacking and handling your board 1 Before opening the antistatic container ground yourself with a wrist grounding strap or by holding onto a grounded object such as the computer chassis 2 Touch the antistatic contai2. K2 29C Use a different value only if necessary Chapter 5 Specifications Typical for 25 C unless otherwise specified Specifications in italic text are guaranteed by design Power consumption Table 5 1 Power consumption specifications 5V operating 620 mA typical 925 mA max Counter timer and parallel I O Table 5 2 Counter timer and parallel I O specifications EE Output Tow ep are Digital configuration 4 banks of 8 Ports A and B 2 banks of 4 Port C programmable by bit or bank as input or output Number of channels 40 I O Configured as counter timers Port A is a digital I O port only Zilog 28536 Counter configuration 6 16 bit counter timers Port B High and Low nibble and Port C All Trigger C1 C3 TRIG Source C1 C3 IN Gate C1 C3 GATE and Output C1 C3 OUT for each chip are available at the user connector Interrupts The Z8536 is programmable to generate interrupts based on bit change pattern recognition level or edge triggered whether configured as a digital I O port or counter port Refer to the ZILOG 2803 6 Z8536 Product Specification for further options Table 5 3 Interrupt specifications INTA mapped to IRQn via PCI BIOS at boot time Interrupt enable Programmable enabled by default and external INT ENABLE active low pulled high through resistor Interrupt sources Programmable 8536A interrupt output 8536B interrupt output 8536A OR ed with 8536B externa
3. conformity with and CE marking has been applied according to the relevant EC Directives listed below using the relevant section of the following EC standards and other normative documents EU EMC Directive 89 336 EEC Essential requirements relating to electromagnetic compatibility EN 55022 Class B 1995 Radiated and conducted emission requirements for information technology equipment EN 50082 1 1997 EC generic immunity requirements EN 61000 4 2 1995 Electrostatic discharge immunity EN 61000 4 3 1997 ENV 50204 1996 RF immunity EN 61000 4 4 1995 Electric fast transient burst immunity Carl Haapaoja Vice President of Design Verification Measurement Computing Corporation 16 Commerce Boulevard Middleboro Massachusetts 02346 508 946 5100 Fax 508 946 9500 E mail info mccdag com Www mccdaq com
4. CC DAQ software Therefore you need to install the MCC DAQ software before you install your board Refer to the DAQ Software Quick Start for instructions on installing the software 1 Turn your computer off open it up and insert your board into an available PCI slot 2 Close your computer and turn it on If you are using an operating system with support for plug and play such as Windows 2000 or Windows XP a dialog box pops up as the system loads indicating that new hardware has been detected If the information file for this board is not already loaded onto your PC you will be prompted for the disk containing this file The MCC DAQ software contains this file If required insert the Measurement Computing Data Acquisition Software CD and click OK 3 To test your installation and configure your board run the nstaCal utility installed in the previous section Refer to the DAQ Software Quick Start that came with your board for information on how to initially set up and load nstaCal Connecting the board for I O operations Connectors cables main I O connector Table 2 1 lists the board connectors applicable cables and compatible accessory boards Table 2 1 Board connectors cables accessory equipment 50 pin high density IDC header connector Compatible cables CSOFF x Figure 2 1 Compatible accessory products CIO MINI50 The PCI INT32 I O connector is a 50 pin header type connector accessible from the rear of the
5. IStOES aies iei E A A A E A E A a Ae ELO UE 4 1 Chapter 5 SPS CITI GALI OM Ssa e a a a a ee ee 5 1 RO WET CONGUE IO Ma acne n E E E CS RE 5 1 Counter imerand parallel TO iri ere ne TE R EREE EEE EEE dee ane ee E OIE R 5 1 Tatre A T O 5 1 EnvirontWuental e dee she Nad hae E EA aed EAA ce ee ein aa Ake eee eo a tee 5 2 Preface About this User s Guide What you will learn from this user s guide This user s guide explains how to install configure and use the PCI INT32 so that you get the most out of the board s interrupt and counter features This user s guide also refers you to related documents available on our web site and to technical support resources Conventions in this user s guide For more information on Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading Caution Shaded caution statements present information to help you avoid injuring yourself and others damaging your hardware or losing your data X b Angle brackets that enclose numbers separated by a colon signify a range of numbers such as those assigned to registers bit settings etc bold text Bold text is used for the names of objects on the screen such as buttons text boxes and check boxes For example 1 Insert the disk or CD and click the OK button italic text Italic text is used for the names of manuals an
6. Installing the P eu crm 2 1 What comes with your PCIEIN 13 2 Shipment eere rene e enn tenentes tue tes Ren n eua Rn Ree 2 AWW 1 REIN RN ET ccs ease es sa RR ORE I 2 1 BH RIA 1 S RR NRI ER T D RTI DLP Te EET 2 1 POC UTC NETTO LSU RENE E 2 1 OPO MAC OM OMNES oi ete mme T Rodin sala Lis oe dine tad uas eo S tec ea Rupe LEE 2 2 Unpackins the DOGEQ siio oo Eb ated Mese uds ue MM desee e Ms M A 2 2 l talim he SOLD VUTO doors cte dori oct eR o eM tet 2 3 nissan Pte Dard Wa Esna a a teiepden cantata dea tincs E cesta tede ecd oae E E 2 3 Connectmp the board tor T O ODEELTORIS carers ert ae I endet etn ei adeste ede aes 2 3 Connectors cables Trai VO CONNEC DOT ae eoi tone ico a eoa eode taps Sd Eie ies Gadel cea ood Poen 2 3 Field wirine and signal termination Accessorie S sess iie eoe eteo cia Piet seus Rp eee Un Ua Epp epe OEIL ETE Un idu UU tese o cU ugs Les 2 4 Chapter 3 Programming and Developing Applications ceeeseeeeeee eese eee eene nnne nnn nnns 3 1 PRO Se AMAT VS VAT OAS CS mad qun MR Ds Ea M MR M LL MR LM E M A MUR 3 1 Packaged applications Profra ennn opes e docx re e obi in eerte esse osea dae aei lestie e 3 1 Resister level DEOPLAPDIPHIDE cono Si i hii b ha ae i ha i ed ae dias eL cM ME E 3 1 Chapter 4 F unct ornal DetallS E T E E E E A E E E E A S E E A 4 1 DIO SPHA TRECE 4 1 Pull p AO Will TesS
7. Measurement Computing Corporation Notice Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use in life support systems and or devices without the written approval of the CEO of Measurement Computing Corporation Life support devices systems are devices or systems which a are intended for surgical implantation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury Measurement Computing Corporation products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people iii Table of Contents About tliis User s GUIdGe cosesocii virgo vie ba YR Ul rV Dru wga 0 Den w UE E VRE cba VERA Duva Ew cR aT DvicS Pu a e ER Na RD RO V What you will learn from this user s guide oo ccccccccsscneceeeeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeess V Conventions Tm this user S PUT ceo eei WV Ee RATES MM HERAUS A O La eU eue ete M bere eus V MBerFe to HQ THOFC IB Or iid WOM ts Nets hon iota dn tote scettr okies ett ean Ri RE E ND M A Ri I RR E M a EL Ed vi Chapter 1 Introducing the PCIHNT32 icc ctitiseses does eov tov us varc esa vv eu Deva reu sUu va e cea Des Cu andea ea tuse ran sbesverdeues vevvoow seuss 1 1 Sotsvatre Leah Ss eee ou parre euo SEN MEM MON MM M LR elc M M LUE sacs 1 1 Chapter 2
8. PC through the expansion backplate The signals available are direct connections to the Z8536 digital I O chips 2 3 PCI INT32 User s Guide Installing the PCI INT32 Figure 2 2 PCI INT32 board I O connector 50 pin Female IDC Connector The red stripe identifies pin 1 Signal name Pin Signal name GND 50 5V C30UTCO 48 C1 C3 IN C3TRIGC2 46 C3 C3 GATE INT INPUT 44 INT ENABLE NC 42 NC C2O0UTBO 40 B1C2 IN l C2 TRIGB2 38 B3C2GATE First 28536 C1OUTB4 36 B5 C1 IN BADR 0 1 2 C1 TRIG B6 34 B7 C1 GATE A0 32 A1 A2 30 A3 A4 28 A5 CES A626 Jese 25 JAF 2 22 2 C3OUTCO 24 CT C3IN C3TRIGC2 22 C3 C3 GATE 2 5 MHz OUT 20 5 MHz INTAOUT 18 INTB OUT C2O0UT BO 16 B1 C2 IN Second 28536 C2TRIGB2 14 B3C2GATE BADR 4 5 6 C1OUTB4 12 B5 C1 IN C1TRIG B6 10 B7 C1 GATE A0 8 A1 A2 6 A3 A4 4 A5 A6 2 A7 50 pin Female IDC connector Figure 2 1 C50FF x cable Field wiring and signal termination accessories You can use the following screw terminal boards to terminate field signals and route them into the PCI INT32 using the C50FF x cable CIO MINISO 50 pin screw terminal board Details on this product are available on our web site at www mcecdaq com cbicatalog cbiproduct asp dept id 102 amp pf 1d 258 For additional information about digital interfacing Detailed information regarding digital interfacing is contained in MCC s Guide to Signal Connections This document is available on our web site at
9. Q and SoftWIRE refer to the DAQ Software Quick Start booklet that shipped with the PCI INT32 1 1 PCI INT32 User s Guide Introducing the PCI INT32 PCI INT32 functions are illustrated in the block diagram shown here ZHWEE LIg ze AS sna Iod Z8536 PROCESSOR A COUNTER TIMER 3 B INTERNAL BUS ADDRESS DATA BUS CONTROL INPUTS PORT C yo INTERFACE PORTA y o INTERNAL CONTROL LOGIC INTERRUPT CONTROL LOGIC m 5 COUNTER TIMER 1 om co COUNTER TIMER 2 P P2 CONNECTOR 37 PIN PCI CONTROLLER INTERFACE INTERNAL CONTROL INTERRUPT pini CONTROL INTERRUPT LOGIC CONTROL PORT A I O INTERRUPT CONTROL LOGIC PORT B I O COUNTER a TIMER 1 a COUNTER TIMER 2 28536 PROCESSOR B Figure 1 1 PCI INT32 functional block diagram 1 2 Chapter 2 Installing the PCI INT32 What comes with your PCI INT32 shipment As you unpack your board make sure that the following components are included Hardware PCT INT32 E PC n MAL USAZ Bi faa 1 Wer flaps ec A P MIS t Software The Measurement Computing Data Acquisition Software CD contains the following software ns aCal installation calibration and test utility TracerDAQ suite of virtual instruments SOftWIRE for VS NET SOoftWIRE MCC DAQ Components for NET installed with SoftWIRE for VS NET
10. aq com PDFmanuals PCI INT32 pdf vi Chapter 1 Introducing the PCI INT32 The PCI INT32 is intended to be used in conjunction with the ZILOG Z80536 Z8536 Product Specification This document is available on our web site at www mccdaq com PDFmanuals Z8536 pdf The PCI INT32 can accept up to 32 vector interrupts and output an interrupt to the PC The board has a pair of Z8536 I O chips interfaced to the PCI bus Each Z8536 accepts up to 16 independent inputs that can be used to generate interrupts from bit patterns or individual bit states or transitions The interrupt outputs from two X8536 chips can be ANDed using software Many other functions can be performed by the PCI INT32 including digital pattern recognition counting with six 16 bit counters and up to 40 bits of digital I O The 16 bit counters can be set up independently or chained together in groups of three The I O pins of the Z8536 are TTL levels All I O lines are accessible through a 50 pin header connector Connections to the board typically use the CSOFF cable and the CIO MINISO terminal board Software features The following software ships with the PCI INT32 free of charge ns aCal installation calibration and test utility TracerDAQ M suite of virtual instruments SoftWIRE for Visual Studio NET graphical programming MCC DAQ Components for VS NET installed with SoftWIRE for VS NET For information on the features of nstaCal TracerDA
11. d help topic titles and to emphasize a word or phrase For example The nstaCal installation procedure is explained in the DAQ Software Quick Start Never touch the exposed pins or circuit connections on the board PCI INT32 User s Guide About this User s Guide Where to find more information The following electronic documents provide helpful information relevant to the operation of the PCI INT32 MCC s Specifications PCI INT32 the PDF version of Chapter 5 in this guide is available on our web site at www mccdaq com pdfs pci int32 pdf MCC s Register Map for the PCI INT32 1s available on our web site at www mcecdaq com registermaps RegMapPCT INT32 pdf MCC s DAQ Software Quick Start 1s available on our web site at www mcecdaq com PDFmanuals DAQ Software Quick Start pdf MCC s Guide to Signal Connections 1s available on our web site at www inccdag com signals signals pdf MCC s Universal Library User s Guide 1s available on our web site at www imccdaq com PDFmanuals sm ul user guide pdf MCC s Universal Library Function Reference 1s available on our web site at www inccdag com PDFmanuals sm ul functions pdf MCC s Universal Library for LabVIEW User s Guide is available on our web site at www mcecdaq com PDFmanuals SM UL LabVIEW pdf The ZILOG Z8036 Z8536 Product Specification is available on our web site at www mccdaq com PDFmanuals Z8536 pdf This user s manual is also available on our web site at www mccd
12. emdStopconvert Enabled 1 exdsropCoanverc Visible u r P Lele A m Mam 44b dm aS ah ab r2 i Ta TO mm Sa cca cm pd Cal UAL 1c 4 oer usea by Cb Cr eet descr LW CilSsvHpoarag zi a cr f ow Chan IESU Afi v x D channel of ph Sean o nel of the seen Cs y 1100 nas asgi A3 hann wa vs 1 3 APA ees 24 a S Ld MP T fox CBCount g cthe total number it Ly RS wes tancol iet ie VC Ar lo CBRates spanple rate in samales per meson s Gain gt the gain for the posara DUC 50 ORY Toc ae nt Ps gt d sc a Li gt i iler the filename for the Bollested daca valuss mae E vis Riata collection options AM Dos aid im T P 2o NIA py om E 96 5 EM Oo r O T u M a t T an ET QU o 7 gt re n 7 to m als a di P j Ca 5 gt B gt A 9 LA lt gt lz uJ A f v i a OR A nar pge requiresdirre inn lb 1 ShowHi Ci Cap lb ShowOp 5 is EXEAT E iy Fora Acquisition E Tr amp cerDAQ fik cdc Run Heb EE slezeni wl xd PCI INT32 Interrupt Counter Board Qa es qa 09 sane qu Sani oaa op ma ct te mt CL TEE r 32 Vector Interrupts 40 bits of Digital O and six 16 bit Counters Aocrasiion Aate cecs eamele ro Sef Weng a tale Fates ihan 1 sec ramgle may lead to t
13. i zd ULSt t Em th WEST D Mst paaa ln lResdopt ions Caption W lblRe adGainy faption lbiReadPFile Caption lbl ReadTeteal Captiqn lbiResdPrefrig Caption Sah maaro onvert Clic ub emdstopConvert Cl A MEASUREMENT COMPUTING PCI INT32 Interrupt Counter Board User s Guide A AY MEASUREMENT COMPUTING Document Revision 5 May 2005 Copyright 2005 Measurement Computing Corporation Your new Measurement Computing product comes with a fantastic extra Management committed to your satisfaction Refer to www mccdaq com execteam html for the names titles and contact information of each key executive at Measurement Computing Thank you for choosing a Measurement Computing product and congratulations You own the finest and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support It s the embodiment of our two missions To offer the highest quality computer based data acquisition control and GPIB hardware and software available at the best possible price To offer our customers superior post sale support FREE Whether providing unrivaled telephone technical and sales support on our latest product offerings or continuing that same first rate support on older products and operating systems we re committed to you Lifetime warranty Every hardware product manufactured by Measurement Computing Corporation is warra
14. irect or indirect special incidental or consequential damage arising from the use of its products even if Measurement Computing Corporation has been notified in advance of the possibility of such damages HM PCI INT32 doc li Trademark and Copyright Information Measurement Advantage brand TracerDAQ Universal Library nstaCal Harsh Environment Warranty Measurement Computing Corporation and the Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation SoftWIRE is a registered trademark of SoftWIRE Technology Inc Windows Microsoft and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation LabVIEW is a trademark of National Instruments All other trademarks are the property of their respective owners Information furnished by Measurement Computing Corporation is believed to be accurate and reliable However no responsibility is assumed by Measurement Computing Corporation neither for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or copyrights of Measurement Computing Corporation All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of
15. l INT INPUT active low or None Buffered output for each chip available at user connector INTA OUT INTB OUT Interrupt priority Programmable No priority or 8536A interrupt has priority over 8536B interrupt 5 1 PCI INT32 User s Guide Specifications Environmental Table 5 4 Environmental specifications Operating temperature range 0 to 50 C Storage temperature range 20 to 70 C 0 to 90 non condensing Main connector and pin out Table 5 5 Board connectors cables accessory equipment Compatible cables Connector type Signal name Pin Signal name GND 50 5V C3 OUTCO 48 C1 C3 IN C3TRIGC2 46 C3 C3 GATE INTINPUT 44 INT ENABLE NC 42 NC C2OUTBO 40 B1 C2 IN C2 TRIGB2 38 B3C2GATE First 28536 C1OUTB4 36 B5 C1 IN BADR 0 1 2 C1TRIGB6 34 B7 C1 GATE A0 32 A1 A2 30 A3 A4 28 A5 a ae 26 ee 25 A7 LLL ccssssss C3 OUT CO 24 CT C3IN C3TRIGC2 22 C3 C3 GATE 2 5MHzOUT 20 5 MHz INTAOUT 18 INTB OUT C2 OUTBO 16 B1 C2 IN Senden C2 TRIGB2 14 B3C2GATE BADR 4 5 6 C1OUTB4 12 B5 C1 IN C1TRIGB6 10 B7 C1 GATE A0 8 A1 A2 6 A3 A4 4 A5 A6 2 A7 50 pin high density IDC header connector C50FF x Compatible accessory products CIO MINIS0 5 2 EC Declaration of Conformity We Measurement Computing Corporation declare under sole responsibility that the product PCI INT32 Interrupt vector board Part Number Description to which this declaration relates meets the essential requirements is in
16. ner to the computer chassis before removing the board from the container 3 Remove the board from the container Never touch the exposed pins or circuit connections on the board 2 2 PCI INT32 User s Guide Installing the PCI INT32 If your PCI INT32 is damaged notify Measurement Computing Corporation immediately by phone fax or e mail For international customers contact your local distributor where you purchased the PCI INT32 Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport measurementcomputing com Installing the software Install the software included with your board before you install the hardware Installing the software first ensures that the information required for proper board detection is installed and available at boot up Refer to the DAQ Software Quick Start for instructions on installing the software on the Measurement Computing Data Acquisition Software CD This booklet is shipped with the hardware and is also available in PDF at www mecdaq com PDFmanuals DAQ Software Quick Start pdf Installing the hardware The PCI INT32 board is completely plug and play with no switches or jumpers to set Configuration is controlled by your system s BIOS To install your board follow the steps below Install the MCC DAQ software before you install your board The driver needed to run your board is installed with the M
17. nted against defects in materials or workmanship for the life of the product Products found defective are repaired or replaced promptly Lifetime Harsh Environment Warranty We will replace any product manufactured by Measurement Computing Corporation that is damaged even due to misuse for only 50 of the current list price I O boards face some tough operating conditions some more severe than the boards are designed to withstand When a board becomes damaged just return the unit with an order for its replacement at only 50 of the current list price We don t need to profit from your misfortune By the way we honor this warranty for any manufacturer s board that we have a replacement for 30 Day Money Back Guarantee You may return any Measurement Computing Corporation product within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep it Please call for an RMA number first No credits or returns accepted without a copy of the original invoice Some software products are subject to a repackaging fee These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular application The remedies provided herein are the buyer s sole and exclusive remedies Neither Measurement Computing Corporation nor its employees shall be liable for any d
18. omputing com Register level programming You should use the Universal Library or one of the packaged application programs mentioned above to control your board Only experienced programmers should try register level programming If you need to program at the register level in your application refer to the Register Map for the PCI INT32 This document is available on our web site at www mccdag com registermaps RegMapPClI INT32 pdf 3 1 Chapter 4 Functional Details DIO signals All digital outputs and inputs on the PCI INT32 connector are TTL Transistor Transistor Logic TTL is an electronics industry term which describes a standard for digital signals which are either at 0 V or 5 V nominal Under normal operating conditions the voltages on the Z8536 pins range from near 0 volts for the low state to near 5 0 volts for the high state The current handling capability of these inputs outputs 1s limited to a few milliamps This is typical of TTL devices Caution The voltages and currents associated with external devices range from less than a hundred mA at a few volts for a small flash light bulb to 50 Amps at 220 volts for a large electric range Attempting to connect either of these devices directly to the PCI INT32 would destroy the I O chip For general information regarding digital I O techniques including signal conditioning and low pass filters refer to the Guide to Signal Connections This document is available on our
19. sistor Open positions are located on the board to install resistor Single Inline Packages SIP The positions are marked A B and C and are adjacent to the 8536 The SIP is made up of eight 2 2 K resistors One side of each resistor is connected to a single common point and brought out to a pin The common line is marked with a dot or line at one end of the SIP The remaining resistor ends are brought out to the other eight pins refer to Figure 4 2 2 2KOhm SIP Dot LO or HI I O Lines Figure 4 2 Eight resistor SIP schematic Figure 4 3 shows a schematic of an SIP installed in both the pull up and pull down positions aD PCI INT32 User s Guide Functional Details DIGITAL I O PORT i o d o 22 co o Q E o DA User Connector Digital I O Lines 2 2K SIP INSTALLED FOR PULL DOWN Figure 4 3 Pull up and pull down resistor SIP schematic When installed the SIP establishes either a high or low logic level at each of the eight I O lines on the port At each board location A B and C there are 10 holes in a line The hole on one end is marked HI and is connected to 5V The other end is marked LO and is connected to GND The eight holes in the middle connect to eight lines of the port A B or C To pull up lines orient the SIP with the common pin dot toward the HI end to pull down install the resistor with the common pin in the LO hole Note We recommend using 2 2K SIPs MCC part number SP
20. u are controlling the inputs of that chip are left floating whenever the Z8536 is in the input mode If the inputs of the device you are controlling are allowed to float they may float up or down The direction they float is dependent on the characteristics of the circuit and 1s unpredictable This 1s why it often appears that the 28536 has gone high after power up The result is that the controlled device gets turned on That is why you need pull up down resistors Figure 4 1 shows a Z8536 digital output with a pull up resistor attached 4 1 PCI INT32 User s Guide Functional Details 5V 2 2K Controlled Device Z8536 Figure 4 1 Z8536 digital output with pull up resistor The pull up resistor provides a reference to 5V while its value of 2 200 Q allows only a little current to flow through the circuit If the Z8536 is reset and enters high impedance input the line is pulled high At that point both the 48536 AND the device being controlled will sense a high signal If the Z8536 is in output mode the 28536 has more than enough power to override the pull up resistor s high signal and drive the line to 0 volts nominal With a pull down resistor installed the line is pulled low when the Z8536 is reset The Z8536 has more than enough power to drive the line high To safeguard against unwanted signal levels all devices that are controlled by the Z8536 chip should be tied low or high as required by a 2 2K Q re
21. web site at www mccedaq com signals signals pdf IMPORTANT The Z8536 digital I O chip initializes all ports as inputs on power up and reset A TTL input is a high impedance input If you connect another TTL input device to the Z8536 it will probably be turned ON every time the Z8536 is reset or it might be turned OFF instead Remember and Z8536 which 1s reset is in INPUT mode It cannot be stated often enough to those unfamiliar with the Z8536 whenever the Z8536 is powered on or reset all pins are set to high impedance input Output devices such as solid state relays may be switched on whenever the computer is powered on or reset To prevent unwanted switching and to drive all outputs to a known state after power on or reset pull pins either high or low with a pull up or pull down resistor Pull up down resistors When the Z8536 digital I O chip is powered on or reset the control register is set to a known state When used as an output device to control other TTL input devices the Z8536 applies a voltage level of 0 V for low and 2 5 V to 5 V for high The device being controlled responds to the output voltage level of the 28536 chip The concept of voltage level of a Z8536 chip in input mode is meaningless Do not connect a volt meter to the floating input of a Z8536 It will show you nothing of meaning In input mode the Z8536 is in high Z or high impedance If your Z8536 was connected to another input chip the device yo
22. www measurementcomputing com signals signals pdf 2 4 Chapter 3 Programming and Developing Applications After following the installation instructions in Chapter 2 your board should now be installed and ready for use Programming languages Measurement Computing s Universal Library provides access to board functions from a variety of Windows programming languages If you are planning to write programs or would like to run the example programs for Visual Basic or any other language please refer to the Universal Library User s Guide available on our web site at www mccdaq com PDFmanuals sm ul user guide pdf Packaged applications programs Many packaged application programs such as SoftWIRE Labtech Notebook and HP VEE now have drivers for your board If the package you own does not have drivers for your board please fax or e mail the package name and the revision number from the install disks We will research the package for you and advise how to obtain drivers Some application drivers are included with the Universal Library package but not with the application package If you have purchased an application package directly from the software vendor you may need to purchase our Universal Library and drivers Please contact us by phone fax or e mail Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport measurementc
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