DIGIO-01 User`s Manual
Contents
1. DIGIO 01 User s Guide PC and Macintosh Revision 1 0 O meet 1999 2001 DIGIO 01 user s manual 2 Contents 1 WELCOME iinssscisscssiscenscbeess sa sssecesbesiessessnc0eesedesesseeseaecaodebondoasdeegesusetevdonscedeasbessensoosssedeesdosoadeassseeasbesdessoossoosesscesesseeseses 4 2 CONTENT OF THE PACKAGE vissicsscisiscscssesicscciesssisssesscssseasesdsssecssasssecscdcsbessossseasesdcsdecdcocseecdedesdosseesseedecdessecseessecs 4 3 PRODUCT HIGHLIGHTS segissnss Sececedsssssesicbcddsiastavsocs vsadeodssanceasebecdesssasesceaov etesdesensocscneauecacseeessgebscts cdsoavessacbeceesaseaey 4 4 MINIMUM SYSTEM REQUIREMENTS ssssccssssssccssssccssscccssssccccssscccesssccccssssccccssscccesssccccsssaccessssccssssccesessnees 4 41 PC COMPATIBLE COMPUTER mamma 4 AD MACINTOSH GCOMPUTER 5 5 2 cse c65 a tea e de ea e ess o ios 5 O NP A seeeeeevesdosaasenseees debonduaseoesauensonsenscedee Dio Sosse ss aa 5 Se HARDWARE wc died ases da eto bold o a bn e ee et i a ate aie odo des dad 5 SD SORT WARE ee a at ed oo a ake ant dee e Men dt nel Y eta ALE Males one Bat adnan ae dea dhl aa 6 6 DIGIO OPERATING INSTRUCTIONS eisssvccstsescscscecbessesccscuscececeseevsavssdevessescseveccesevencbbenssecessactsosesessseeodsceceessveeste 7 6 1 USING THE INPUTS FRONT SIDE cccccscssssssesesececsceceevevcececscscsvsvsvsususscacacesavaveseecesssavavavssesesncasacavavavseecesersnens 7 62 USING H EN A 1 2 SE E TEA A E E EA aey oh 8 7 IA ANO2. ANI O 9 TA CPEAWINDO WD a le co Le 9 2 MACINTOSH 68Ke PRC ct aida t a pia 9 7 3 OVERVIEW OF THE SERIAL COMMUNICATION PROTOCOL RS 232 cccecesesscseseecevevessesessscscacecevevsveeeeceesvens 9 ORGANIZATION OF THE OD irsccccsvcctessac cies scessdesdsosctecscassutssececsedseSvedoscsaccesguvevessseeesessoces sSecssecssbscssessessevsesesSoses 10 ID A e nO eo 10 A EA deus bcos TEE T E T EETA EEE Mee Rin 11 SA EI vocssdecdedeessnuesssu adeosesesseeseveceosebasvesb ENIE E 12 10 CONTACT INFORMATION sccssssssssssesssssreessessresssseseesescesenssscesensescssssceseneescssessesseseneesessenessessssesnesseseseers 12 DIGIO 01 user s manual 3 ADIO and DIGIO are registered trademarks of MEET Ltd LabView is a registered trademark of National Instruments Corp Macintosh is a registered trademark of Apple Computer Inc CodeWarrior is a registered trademark of Metrowerks Corporation VisualC is a registered trademark of Microsoft Corporation Information furnished by MEET is believed to be accurate and reliable However the company cannot assume responsibility for use of any product circuit or software other than those embodied in a MEET product nor for any infringements of patents or other rights of third parties that may result from its use No license is granted by implication or otherwise under any patent or patent rights of MEET MEET reserves the right to make changes without further notices to any of its products MEET makes no
3. SOD CIO MEET CGH ball oonko panal foe local open ation wie Rh alacimmnica cam Fig 2 DIGIO virtual instrument user interface LabVIEW To start the execution of the program click on the icon indicated by the arrow Lng 1 Fig 3 How to launch the program The software then asks you to which serial port of the computer you have connected the DIGIO and what s the Address ID of the unit that you want to control DIGIO 01 user s manual 7 Serial port Unit O i 0 15 Fig 4 Communications settings dialog The following table shows the correspondence between the serial port number and the physical serial port on your computer Serial port number correspondence PC 0 gt Coml 1 gt Com2 2 gt Com3 3 gt Com4 etc Mac 0 gt Modem 1 gt Printer Table 1 Serial port identification Please enter the correct values according to the installation that you have made After pressing OK you should get full control over the DIGIO Example The rotary switch on your DIGIO is set to 1 and you have connected the serial cable to the COM1 port PC or Modem port Mac Then the settings you have to make are exactly the same as those indicated in Fig 4 In a similar way you can now try out all the other software examples provided on the CD some of them do actually not require an DIGIO to by physically present but simulate it instead 6 DIGIO Operating Instructions The DIGIO has two main functional blocks isolated inputs o
4. 2 Using the relays Each DIGIO contains sixteen SPDT single pole dual throw relays rated at 250VAC 8A each whose contacts are available at the rear panel of the instrument The relays can be controlled by the switches provided on the lower half side of the Virtual User Interface Fig 2 The connectors on the rear panel are organized as two rows of 24 contacts each The pin out is as follows Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6 Ch 7 Ch 8 HEEE Ch 9 Ch 10 Ch 11 Ch 12 Ch 13 Ch 14 Ch 15 Ch 16 Fig 6 DIGIO rear panel pin out The wiring of each relay is as follows P T1 are connected in the inactive position DIGIO 01 user s manual 9 T2 P Ti Fig 7 DIGIO s relay wiring Please refer to the datasheet for maximum output load and voltage ratings Exceeding these values may result in a permanent damage of the instrument 7 Development Tools It is quite easy to design custom applications for the DIGIO on both Windows and Macintosh platforms using the software driver package provided on the enclosed CD The developer must have a full version of either LabVIEW Win or Mac or VisualC Win or Code Warrior Mac Free drivers offered include 7 1 PC Windows VisualCiY source code LabVIEW More details programmer s reference manuals can be found directly in the corresponding directory on the CD 7 2 Macintosh 68k PPC Code Warrior source code LabVIEW More details programmer s reference manu
5. als can be found directly in the corresponding directory on the CD Check on our web site for updates 7 3 Overview of the serial communication protocol RS 232 DIGIO implements a special multi drop serial protocol over RS 232 allowing multiple units to be connected in a chained topology Each instrument acts as a repeater in this protocol The communication is made of command and response telegrams All telegrams are sequences of bytes containing ASCII characters numbers are also encoded as ASCII numbers with exception of the first byte of a telegram which contains the address field 1 e the information required to select to which instrument the telegram is directed or from which it is coming All telegrams are terminated by a CARRIAGE RETURN r 0x0d A line feed 0x0a can also be appended but is not required Telegram format n OPCODE parameter Mr n is the first byte transmitted Ww is the last where iv VisualC is a registered trademark of Microsoft Corporation Y Code Warrior is a registered trademark of Metrowerks Corporation DIGIO 01 user s manual 10 n address of the instrument to which the command is directed with the following format MSB LSB binary byte L Destaination Address ID Important the most significant bit MSB must be 1 in order to differentiate this byte from the remaining ones which are all pure ASCII with the first bit set to 0 _OPCODE
6. e material Transport costs are not covered 10 Contact information MEET Electronics Ltd P O Box 6877 Coldrerio Switzerland Phone 41 0 91 6300270 Fax 41 0 91 6300277 Internet www meet electronics com Email addresses Support support meet electronics com Sales sales meet electronics com
7. ge contains 1 DIGIO 01 unit 1 DIGIO CD fits both Windows and Macintosh containing documentation and software computer serial cable Macintosh serial cable must be ordered separately DC power input cable 3 Product Highlights DIGIO stands for DIGital Input Output Module and as the name implies it is a data acquisition and control DAQ instrument to be operated from a personal computer Each DIGIO unit offers up to sixteen logic inputs and sixteen relay SPDT outputs Built in networking capabilities allow to connect a chain of up to 15 DIGIO 01 or other similar equipment such as MEET s DIGIO to a single computer s RS 232 port No PCI slot and no GPIB adapter is needed The instrument was designed for applications in industry building automation education and laboratory For more details please read the enclosed product datasheet MEET provides a comprehensive range of free software tools for the DIGIO including drivers in C C and LabVIEWi as well as ready to use stand alone software applications The enclosed CD contains software for both Windows PCs and Macintosh computers Software updates are available for free from our web site Alternatively MEET also offers custom software design services to its customers A range of optional accessories round up the offerings including signal conditioning modules for various physical variables power supplies connectors and cables please contact the factory o
8. is a word that specifies the command type ASCII string or specify if the command is affirmative or interrogative ASCII character Parameter is required for some commands this field contains additional information required by the command ASCII string Response telegrams and error checking To answer to a command the addressed instrument echoes it and then appends its own response parameter field if required The software on the computer must be implemented in such a way to check against errors in the returned echo and eventually discard wrong telegrams The instrument itself also contains a simple syntax check and it discards command telegrams with wrong sintax or transmission errors All connected instruments receive all the telegrams sent by the computer downstream but only the one that s addressed is allowed to send an answer The upstream data flow is not monitored by the other instruments 8 Organization of the CD The CD is a hybrid i e it can be opened both on Windows and Macintosh machines looking different on both of them each platform actually sees only the part intended for it 8 1 Windows 3 PE a Labview El 3 Adio H 4 23 Examples ao Digia Hy Examples H Lib Lf Visuall Fig 8 Windows CD organization The folder VisualC contains the driver routines source files and related documentation for VisualC developers Both ADIO and DIGIO folders inside the LabVIEW folder contai
9. n software for the corresponding instrument The subfolders of ADIO and DIGIO are Examples and Lib The first contains stand alone running application programs and examples including DIGIO described in chapter 5 2 all designed with LabVIEW The second contains LabVIEW drivers VI s and related documentation for LabVIEW developers DIGIO 01 user s manual 11 8 2 Macintosh 16 items 428 2 MB available D gt Y Code Warrior y amp Labview Y Y 68k Distribution E Adio Cy Examples 68k Cy Lib 68k Digio Examples 68k Lib 68k PPC Distribution Adio Examples PPC Lib PPc CY Digio Examples PPC Y b b Y b b Y Y b b Y b b Fig 9 Macintosh CD organization The structure and content of the CD for Macintosh users is very similar to its Windows counterpart The main differences are the CodeWarrior folder contains driver source code and related documentation for CodeWarrior developers instead of VisualC LabVIEW software is split into two categories 68k and PPC The software in the PPC folder is intended for machines with a PowerPC processor the software in the 68k folder is for the older 680x0 computers Documentation for developers is included DIGIO 01 user s manual 12 9 Warranty This product is guaranteed to be free from defects in materials and workmanship for a period of 1 one year from the time of its original purchase The warranty is limited to the replacement of the defectiv
10. n the front side relay outputs on the rear side The following paragraphs explain how to use these functions with our sample software provided on the CD Please start the DIGIO computer program according to the instructions given in paragraphs 5 1 and 5 2 More flexibility can be achieved by programming custom applications using our C C or LabVIEW drivers 6 1 Using the inputs front side The sixteen inputs on the front side all have a full galvanic isolation They are all digital i e they can be 1 or 0 Allowable input voltages go from 0 to 24Volts Voltages greater than 4 5Volts are considered as a logic 1 Voltages below that value are read as 0 In the upper half of the Virtual User Interface Fig 2 window each input channel has its own lamp indicating the logic status of the applied signal DIGIO s front panel has two connector rows The connectors on the lower row are the actual inputs The upper row provides optional 5VDC outputs not isolated intended to power external sensors or signal conditioning circuits Each input can be considered as consisting of a pair of connectors one on the upper row and one on the lower row DIGIO 01 user s manual The pin out of each input is then as follows INPUT INPUT Fig 5 Front side input connector pin out Please refer to the datasheet for detailed technical specifications Exceeding the maximum values may result in a permanent damage of the instrument 6
11. r your local sales representative Third party accessories available include USB to RS 232 adapter for both PC and Mac 4 Minimum System Requirements 4 1 PC compatible computer 486 processor or higher 16 MB RAM or more 50 MB free hard disk spaceli CDROM drive 1 serial port COM1 4 Windows3 1 or Windows95 98 or Windows NT or higherii LabVIEW 5 0 or higher or VisualCi Note the enclosed demos have been tested only on PCs running Windows95 98 i LabVIEW is a registered trademark of National Instruments Corporation l Not required to run the demos contained on the CD Only needed for LabVIEW or C C application development DIGIO 01 user s manual 4 2 Macintosh computer PowerPC processor or 68k processor with math coprocessor 16 MB RAM or more 50 MB free hard disk spaceiii CD ROM drive 1 serial port printer or modem port also some external USB to serial adapters may work Please contact MEET Ltd for information MacOS 7 0 or higher LabView 5 0 or higher or Code Warriorili Note the enclosed demos have been tested only on PowerPC machines with MacOS 8 x or higher 5 Installation 5 1 Hardware turn off the DIGIO instrument configure the Address ID of DIGIO by means of the rotary switch on the rear panel use a small screwdriver connect the serial cable between the computer s serial port and DIGIO Make sure that the cable is inserted into the lower Master connector on
12. t on a service bureau or other remote access system whereby other persons can benefit from the use of the software or use it on more than one computer at the same time Modification adaptation translation reverse engineering disassembly of the software are not permitted Limitation of liability Subject to applicable laws 1 in no event will MEET or its licensors be liable for any loss of data lost profits cost of procurement of substitute goods or services or for any special incidental consequential or indirect damages arising from the use or operation of the software or accompanying documentation however caused and on any theory of liability 2 this limitation will apply even if MEET has been advised of the possibility of such damage CE marking warning ADIO and DIGIO are Class A products In a domestic environment theses products may cause radio interference in which case the user may be required to take adequate measures MEET Ltd 1999 2001 MEET the i and dome et logos are registered trademarks of MEET Electronics Ltd Coldrerio Switzerland DIGIO 01 user s manual 4 1 Welcome Thank you for choosing a quality product from MEET Electronics Reading this document will help you get the best out of your new instrument and avoid common mistakes We are sure that our product will work to your full satisfaction and let you enjoy troublefree operation over many many years 2 Content of the package The present packa
13. the DIGIO connect DIGIO to the power supply 24 Volts DC using the cable included in the package Either power input connector upper or lower can be used on DIGIO s rear panel turn on DIGIO by pressing the button on the front panel The green LED on the front panel must go on to turn off DIGIO press again the button on the front panel DIGIO is now ready to work and waits to receive command from the personal computer NOTE that the rotary switch is only read at power up To make a change in the position of the rotary switch become effective DIGIO must therefore be turned off and on again Connecting multiple DIGIO or other equivalent e g ADIO units to a single personal computer turn off all instruments make sure that every instrument has a different Address ID rotary switch on the rear panel connect the single DIGIOs as follows the figure shows which connector on the rear panel must be connected to what cable me ID 3 a Re ese cable ID 1 ID 14 Fig 1 DIGIO in chained operation iii Not required to run the demos contained on the CD Only needed for LabVIEW or C C application development DIGIO 01 user s manual 6 5 2 Software Locate the stand alone LabVIEW application virtual instrument user interface on the enclosed CD which can be found under Labview DIGIO Examples DIGIO Double click on the DIGIO Application icon Then the following window should come up Dig a fe
14. warranty representation or guarantee regarding the suitability of its products or software for any particular purpose nor does MEET assume any liability arising out of the application or use of any product circuit or software and specifically disclaims any and all liability including without limitation consequential or incidental damages MEET does not warrant that the operation of the software will be uninterrupted or error free or that defects in the software will be corrected MEET products are not designed intended or authorized for use as components or applications intended to support or sustain life or for any other application in which the failure of the MEET product could create a situation where personal injury or death may occur All enclosed documents and software are protected by copyright No part of this document or other documents contained on this CD may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical Photocopying recording or otherwise without the prior written permission of MEET Ltd The software or parts of it may not be duplicated except for the transfer thereof to a single hard disk in which case the original must be kept solely for backup or safe keeping purposes The user may physically transfer the software from one computer to another but may not network the software transfer it electronically from one computer to another through a modem install i
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