DMX 512 PC Interface Card Mk2
Contents
1. 2 4 Application programs The CD contains several programs which xcan be run under Windows 3 1 3 11 95 98 or Windows Millennium the programs do not support Windows NT or 2000 To install and start these programs please proceed as follows start Windows place the CD ROM into your drive bay change to folder DMX 1512B WINDOWS Enter the command RUN AASETUP This will call the Setup routine which copies the required files to your harddisk and installs a program group DESK36 There you will find these aplication programs DESK12 The surface of a 12 channel 2 preset light control desk You can create scenes and running lights DESK18 same as above but 18 channels DESK36 same as above but 36 channels PANEL A touchpad with mouse control Please find instructions for use in the help files which come with the programs Press lt F1 gt to call the help screen IMPORTANT NOTICE These programs have been developed for DMX interface cards 1512A and 1512B LC To enable operation with the 1512B card you have to copy the file SLHDMX16 BIN into the DMX512 folder or the card cannot be found and initalized If the installation program reports a file already present or file already in use by another application please select IGNORE and continue Windows wants to replace files which already have been installed on your system by another program As these files are already present it is okay to skip that step2. Startbyte value typical value 0 Value of send startbyte channel count LowByte 0 255 typical value 0 channel count HighByte 0 2 typical value 2 The bytes for the channel counter have to be set according to the following table LO 001 HI 000 1 sent channels LO 002 HI 000 2sent channels LO 003 HI 000 3 sent channels LO 000 HI 000 256 sent channels LO 001 HI 001 257 sent channels LO 002 HI 001 258 sent channels LO 255 HI 001 511 sent channels LO 000 HI 001 512 sent channels Here are the formulas to calculate the channel count bytes LOWBYTE channelcount AND 255 HIGHBYTE INT channelcount 1 256 Send Repeat typical value 0 gt 0 send continously repetitive 0 one transmission then stop Interdigittime typical value 0 Idle time between Bytes Minimum Os max 1s value time us 2 16 12 Return parameters 03F9 Cardtype Returns the card type identifier Valid card IDs are 128 Card 1512A 1512B LC 001 Card 1512B 004 Card 1512B 005 Card 1512B dmxdef 9 0 It is recommended to set 03F9 to 0 before startting the card and then read the result of the detection process SOUMDLIGHT To transfer the default values into the card RAM Set n 0 Write FO n into card address 0 Write 03 into card address 1 Write dmxdef n into card address 2 n n 1 Repeat 2 until 5 while n lt 10 a pes ER pts jit pil we we VL FH YN 1 2 3 4 5 6 This completes the initializa
3. Third Party Software There are several programs available from lighting control to complete showmanagement which support the DMX PC interface cards Please refer to our support website at http www pcdmx com for more details Programming Examples Pascal routines in high level language Listing of Unit DMX512 PAS This unit conains the asembled operating system for the DMX PC card 1512B Important All zero bytes must be transferred UNIT dmxbts interface const b sys array 0 530 of byte 02 00 7D 02 01 BD 32 50 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 20 98 06 520 9 0B 32 00 32 C2 98 02 50 D1 00 00 32 C2 99 32 50 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 32 00 00 00 0 00 00 00 00 00 75 87 00 15 9D0 00 75 81 560 575 B8 10 D2 5 08 5 75 98 88 75 8 A8 80 75 89 11 75 88 01 75 90 67 75 5B0 FF 75 3A 01 30 95 03 75 3A 80 90 03 SE8 5 74 SCF SF0 A3 74 03 SF0 SA3 74 50B SF0 A3 74 60 SF0 90 03 SF0 SEO F5 31 A3 SEO F5 32 5A3 5E0 5 F5 33 53A3 S E0 F5 34 5 A3 SEO SF5 35 A3 SEO F5 38 A3 E0 C3 13 SF5 3B Hj O O O f N oO Oo O C Oo CO uo S CO CO G N
4. 1512B 1512B LC 1512B Type Sub Calling parameters CardAdr Word ByteAdr Word Ausgabe Byte Return parameters Example Declare Sub voWByte Lib SLHDMX2 DLL ByVal CardAdr ByVal ByteAdr ByVal Ausgabe The Sub vbWByte write a byte of data into the card RAM area To do so the RAM address Word written as two Bytes HiByte LowByte and the data Byte have to be transferred Example write value 80 80h 50 as DMX channel 1 vbWByte amp H100 amp H400 amp H80 Name vbRByte Purpose Reads a Byte from the DMX card RAM for cards 1512A 1512B 1512B LC 1512B Type Function Calling parameters CardAdr Word ByteAdr Word Return parameters Byte Byte Example Declare Function voRByte Lib SLHDMX2 DLL ByVal CardAdr ByVal ByteAdr The Function vbRByte reads a byte of data from the card RAM area To do so the RAM address Word written as two Bytes HiByte LowByte has to be transferred Example read card ID from RAM address 03F9 byte vbRByte amp H100 amp H3F9 SOUMDLIGHT Name vbDMXStart Purpose starts the DMX transmission for cards 1512A 1512B 1512B LC Type Function Calling parameters CardAdr Word Return parameters Dummy Byte Example Declare Function vodmxstart Lib SLHDMX2 DLL ByVal CardAdr Name vbDMXStop Purpose Stops the DMX transmission for cards 1512A 1512B 1512B LC Type Function Calling parameters CardAdr Word Return paramete
5. but not from multiple computers simultaneously You are not allowed to change modify or re engineer the software supplied Limited Warranty SOUNDLIGHT warrants the functionality of the materials delivered Warranty is limited to 6 month and repair replacement of defective components at our decision Repair or replacement does not prolongthe initial warranty Liability The customer has to check carefully the suitability of the materials for its intended use A suitability for a special purpose is not given software is delivered as is No liability for damages of any kind direct or consequential is accepted If you have any questions regarding these terms please contact SOUNDLIGHT Tha DUY Corrine Glashuettenstrasse 11 D 30165 Hannover GERMANY Tel 0511 3730 267 Fax 0511 3730 423 E Mail info soundlight de The DMX Interface Card 1512B has been CE certified in conjunction with a Gateway P5 90 Pentium Computer FCC Notice This equipment has been tested and found to comply with the limits for class B digital devices pursuant to part 15 ofthe FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses andcan radiate radio frequency energy and if notinstalled in accordance with the instruction may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a
6. port 101 S20 i 35 portreceive port 102 20 i If Portreceive SAA then portadr 100 S 20 i end find_card portadr end procedure dmxinit RER RREK e KK Ee ke e Sk KEE ER EERE RR EKER EK KEE KK transfers the CPU operating system Wkckckokok e kk koe ee ke e e ke ke e Sk ke ke ke e he kk Sk e ke kk e e kk EY var i integer dummy byte begin dummy port cardadr for i 0 to 530 do begin port cardadr lo i port cardadr 1 hi i port cardadr 2 b_sys il end for i 0 to 3ff do begin port cardadr lo it 400 port cardadrt 1 hi it 400 port cardadr 2 0 end end procedure cardstart FERRARA ERK GECKCOR OR RK REE ERREK RAKE IRB EERE HK Starts the card DMX stransfer removes CPU Reset Wk kk ck ok e kk koe ke ke e e ke CK KE ke ke ek he e he ke Sk ke ke kk e ek key var dummy word begin dummy port cardadr dummy port cardadr 3 end check for test value reset card transfer operating system address lowbyte address highbyte data value Set all channels 0 reset card release reset SOUNDLIGHT Tie DEN Pextgumty procedure dmxtrans kanaladress word data byte LERAAAAAKKAERERR e e e KARR Se ek e ek kc EU kk ek ke KK ransfers a DMX data value into the appropriate location within the DMX RAM Example Channel 3 RAMadsress 402 Wok ek ek ck ok RER E ee ke KARE EUR Oe eK EAB KICK RI
7. 6E 20 26 20 53 S 4C 48 20 31 5 39 5 39 34 5 2F 39 35 20 20 20 20 D2 9C C0 SE0 85 41 3F 85 42 40 D2 SOA C2 08 90 06 00 D0 SE0 32 5C0 D0 C0 SEO 20 08 14 30 50A 18 E5 99 SF5 43 8 00 S0A C2 S0A 90 06 00 D 0 D0 D0 32 SD2 508 D0 E 0 D0 32 20 808 16 5E5 59 0 A3 D0 S E0 S D0 D0 32 SE F 70 02 15 40 15 3F D 0 D0 D0 32 D0 E0 D0 D0 2 900 800 MPLEMENTATION nd Tj c wW D H U El DONONOCONWCArFrCEH 3 3 D H x Xo Xn dn qox var d sys array 0 511 of byte var cardadr word function find card word procedure dmxinit procedure cardstart procedure dmxtrans kanaladress word data byte procedure dmxtrans512 function dmxread adresse word byte Implementation function find card ERRRARKEARK EER RARE RRR R RRR KERR EIR E KIER K KE Searches for the card address and returns the address if found successfully or returns 0 if no card is found KERER KIRK RRR BR KK RK BRE KER RRIF BR RK var i portreceive byte portadr word dummy byte begin portadr 0 for i 0 to 3 do begin dummy port 100 4 20 i port 100 S20 i 255 port 101 S20 i 3 port 102 S20 i SAA end no card card reset set address 03FF set test value Tie EN Pextguiy SOUNDLIGHT for 1 0 to 3 do begin port 100 S20 i 255
8. i eae gt 2 XLR PLUG FEMALE TRANSMIT OUTPUT DMX duni gt 3 XLR PLUG FEMALE TRANSMIT OUTPUT DMX Bc gt 1 XLR PLUG FEMALE GND screen do not use Pin 5 SOUMDLIGHT 1 3 Addresses of the DMX interface card To be able to communicate with the interface card the computer needs one or more interface addreses where to access the card The interface address is set by DIP coding switches It is only necessary to set the address if more than one DMX512 interface card is used within the samecomputer or which is very unlikely the standard address is already in use by another interface card These arethe adresses available Hex Decimal 0100 256 0120 288 0140 320 0160 355 Only four individual and consecutive addresses beginning with the given base address are used forexample 100 103 The base adress of the DMX interface card is set to 100 103 256 260 dec when shipped In most cases this will ensure trouble free operation since there are only very few cards known to use this same address range If you have problems running the card at the initial adress setting try another address setting The software will detect the presence of the card automatically regardless of the address setting using the routine DMXCARD as specified later For cards equipped with DIP switches the card base adress can be set using DIP switches 1 amp 2 These settings apply 1534 Hex Decimal Jumper setting 0100 256 SW1 O
9. the card you have to transfer the card OS into the card RAM and then start the card CPU If special working parameters are required these have to be set aftertransferring the card OS How to detect the presence of a card transfer the program file and parameters is described later SOUMDLIGHT After starting the card CPU the transmission of serial DMX data begins and continues until the card is disabled or a complete packet has been sent When initalizing the card for the very first time all RAM contents will be erased from memory Every consecutive RESET command leaves thadataintact that is only changes have to be written to the memory DMX512 by itself will repeat all data changed or not and the card CPU takes care of this task Transmission of data is limited to one complete packet and repeated upon request from the host PC Beforeissuing a repeat command the user shall update changed channel values This ensures highes data integrity for 16bit data which are usually being transferred as twio 8 bit words because a transmission can never start while one of these bytes is being updated the receiver will always receive data pairs belonging together Remember that DMX512 by itself only defines 8 bit data butall practical uses mainly for moving lights require 16 bit resolution at least for the movement An interface card using anonsynchronized scheme will not be able delivering consistent 16 bit data over DMX512 SOUMDLIGHT 2 1 T
10. IN CX x x Ao eo OS OS OO x 0M O NOSN ON ON ON OM OM GONG ON ON ON SN o8 OGO 0000 0c 0 oc O OGOOGO OGO wG G GGO G TDTO GOGA GODOA DTA G G Gf So OO O Cc CO Oa C COCc c cc Uc c cc ccc 00 Hn 0 0o OO Oo co0c jJ LH p p C SOUNDLIGHT Tina DEN Pextgumty SA3 A3 SFO A3 I 41 A3 SFO A3 1 8D 78 80 79 80 SFF 06 75 SA8 91 31 FD D2 5 92 590 35 AA 34 85 32 0B SE5 3B 60 2D 30 99 SFD DC SF E0 SF5 44 E0 S F5 42 E5 8A SFO 99 A3 S DA SF1 DB SFD D5 33 5F 60 03 02 0 01 57 r SA3 SE5 S3A E0 F5 3E A3 1 A3 SI 0 F5 5 543 j rp pu r SA3 SES 8C F0 75 8A 00 75 5 8C 00 C2 S E5 44 SB4 02 01 0D D2 90 C2 92 75 A8 80 D5 04 00 SAB S rs z 99 C2 99 E0 S AC S3B E F5 99 C2 EF 30 99 D C2 8C E5 38 0 A6 90 03 FE SE5 8A SFO A3 E5 8C F0 02 E0 30 99 SFD SF5 99 C2 99 A3 DA SF5 SDB F3 30 99 FD D5 33 FD C2 8C E5 38 60 03 02 00 A6 90 03 Tie DREN Compariy SOUNDLIGHT SFE SE5 8A F0O A3 E5 8C SFO 02 01 80 02 01 83 75 C7 SAA 75 C7 55 43 D8 01 22 50 43 2D 31 35 31 32 42 2F 31 36 20 28 43 29 20 44 52E 20 48 S6F 66 66 S6D 61 S6E
11. N 0120 288 SW1 OFF 0140 320 SW1 ON SW2 OFF 1234 0160 352 SW1 OFF SW2 OFF Switches SW3 and SW4 are factory set both switches ALWAYS set to ON and should NOT be changed SOUMDLIGHT The following chapters cover programming of the card and show some examples for different programming languages If you want to skip programming the card please proceed to chapter 2 6 Application Programs 1 4 How the card works The DMX interface card should be low priced but atthe same time as flexible as can be This allows to adapt the card to different needs and upgrade features simply by downloading new software Your 1512B card allows you to do so Looking at the card will unveil two things first there is a 80C3x microprocessor and second there is no ROM or EPROM to contain the uP operating system software The program memory is fully simulated by RAM area and the card OS downloaded before the card is initalized Changing or upgrading the card operating system can simply be done by replacing the download file Thus the card can be very easily upgradedto future versions of DMX512 should they ever come Even changig the operating system while the card is running is possible The solution we have selected has lots of advantages but requires to load the OS every time before you start your application A special function supplied in a Dynamic Link Library DLL does the job for you To ensure maximun compatibility to all PCs we
12. SET Minimum value required for DMX512 is 88us value time us 2 16 12 Startbyte value typical value 0 Value of send startbyte channel count LowByte 0 255 typical value 0 channel count HighByte 0 2 typical value 2 The bytes for the channel counter have to be set according to the following table LO 001 HI 000 1 sent channels LO 002 HI 000 2sent channels LO 003 HI 000 3 sent channels LO 000 HI 000 256 sent channels LO 001 HI 001 257 sent channels LO 002 HI 001 258 sent channels LO 255 HI 001 511 sent channels LO 000 HI 001 512 sent channels Here are the formulas to calculate the channel count bytes LOWBYTE channelcount AND 255 HIGHBYTE INT channelcount 1 256 Send Repeat typical value 0 gt 0 send continously repetitive 0 one transmission then stop Interdigittime typical value 0 Idle time between Bytes Minimum Os max 1s value time us 2 16 12 Return parameters 03F9 Cardtype Returns the card type identifier Valid card IDs are 128 Card 1512A 1512B LC 001 Card 1512B 004 Card 1512C 005 Card 1512C NOTE FOR WINDOWS 2000 XP USERS The DLLs cannot be used with Windows NT Widows 2000 or Windows XP If you want to program an application for any of the OS versions you may have to use the freeware tool DLPORTIO which supports card access with Windows 2000 XP See the DRIVERS section of www pcdmx512 com for more information and download SOUMDLIGHT 2 3
13. Tie OMAN Centri NDLIGHT 5 Ver 06 99 User Manual DMX 512 PC Interface Card Mk2 Type 1512B Single Link Card fume MMC in Um midi pup ea VTE CLT cae HINDOL J iT BP j Fe n BET mre m C SOUNDLIGHT 1992 2003 ALL RIGHTS RESERVED NO PART OF THIS MANUAL MAY BE REPRODUCED COPIED OR USED COMMERCIALLY WITHOUT THE PRIOR WRITTEN CONSENT OF THE PUBLISHER WE BELIEVE ALL INFORMATION GIVEN IN THIS MANUAL TO BE ACCURATE BUT CANNOT BEHELD LIABLE FOR ERRORS AND OMISSIONS ITIS THE USERS RESPONSIBILITY TO CHECK THE SUITABILITY OF THE EQUIPMENT FORITSINTENDED USE SOUNDLIGHT ASSUMES NO RESPONSIBILITY FORDAMAGES DIRECTOR CONSEQUENTIAL RESULTING FROM NON SUITABILITY IMPROPER USE OR APPLICATION WRONG SETUP AND DISREGARD OF SAFETY REQUIREMENTS AND REGULATIONS SOUNDLIGHT Tie PEN Pextgurty Contract of Use Before putting this product to work please read the following license agreement thoroughly If you do not accept these terms of license please return all materials unopened to your supplier Only this can void the license agreement By opening the product package or installation of the software you accept the license agreement Terms of Use The sole right to duplicate programs and parts thereof remains with SOUNDLIGHT The copyright of the written materials remains with SOUNDLIGHT The conditions of use resemble those of a book You may use and operate the productat different locations
14. as been detected everything is okay If a 12 MHz standard card 1512A 1512B LC has been detected the complete initialization must be repeated Use the file SLHDMX12 BIN forcard 1512A and 1512B LC SLHDMX17 BIN for card 1512C Then check the return value again The identifier must match if you get a different return value please check the card or the card OS transfer was faulty Return codes 06 through 1F are reserved for future SLH products NOTE If a 1512C card is expected to be found always check for this card type first Then check for the presence of a 1512B or 1512A card respectively Transfer the Default Parameters into the card Most operating system files allow setting of card timing channel countand more If parameters are specified beyond allowable limits the card may correct worng settings by itself IMPORTANT NOTICE When loading the operating system file SLHDMA16 BIN all parameter values are setto factory defaults automatically Thus normally no parameter transfer is required Memory allocation of PC DMX card 1512B 0000 03EF Operating system max 1000 Bytes 03F0 03FE Operating system parameters dmxdef 0400 05FF Send data for Link 1 Channels 1 512 SOUMDLIGHT Card RAM Address 03F0 03F 1 03F3 03F4 03F5 03F6 Parameter Default Start Sync Duration typical value 60 Length of sync pulse RESET Minimum value required for DMX512 is 88us value time us 2 16 12
15. begin port cardadr lo 400 kanaladress 1 port cardadr 1 hi 400 kanaladress 1 port cardadr 2 data end procedure dmxtrans512 35 eR e Re KK OK EOS REECE KS OK SE ERR KK KKK ERR RAK KKK transfers 512 DMX values from array d sys into the DMX RAM range 400h 5FF KRKKEKKRRAKERKRK e ke ke See ek e he ke e Sk Kee kk e e ke var i word begin for i 0 to S1ff do begin port cardadr lo 400 1i port cardadr 1 hi S400 i port cardadr 2 d_sys il end function dmxread adresse word byte Ee ke e ee SKK E ERR EERE REAR RR e e KERR ER ERE ABER K Reads a byte from the DMX RAM ERAKREKKREAKKERERERERKEREREREREREREREREREE KY begin port cardadr lo adresse port cardadr 1 hi adresse dmxread port cardadr 2 end end Tie DREN Pexgumiy SOUNDLIGHT Program DMXDEMO 8 RERO e EOKCK KEOK eR ee ke eee Se eek KKK E KBB REA KK KK Demo programm shows how to initialize the card reading from and writing into the DMX RAM WORK e UK CK OK Re eoe ERK RAE E BREAKER KEE ERE KK KK uses crt dos dmx512 var i data byte j word begin cardadr find_card find card base address dmxinit copy operating system into RAM cardstart start the DMX card GlrsScr for j 0 to 5ff do read DMX RAM from 0 5FFh and display on screen begin data dmxread j writeln j 4 data 4 delay 10 end for i 0 to 255 do dim channels 1 4 slowly begin
16. dmxtrans dmxtrans dmxtrans dmxtrans dmxstart delay 50 gotoxy 10 10 write Dimmerwert i 3 end nu 2 n 35 4 1 i 2 i 3 1 4 1 dmxtrans 1 0 switch off channels 1 4 dmxtrans 2 dmxtrans 3 dmxtrans 4 readln end CO Go c6 3 2 Using a recognizing the cards within your own software As could be seen above the operating system file must be transferred into the card and must then be started Thus card internal functions could easily changed or expanded by changing or replacing the card OS file Our applications come with different binary files which support the following card types SLHDMX12 BIN for cards 1512A or for cards 1512B LC equipped with a 12 MHz crystal SLHDMX1 6 BIN forcards 1512B professional series equipped with a 16 MHz crystal SLHDMX17 BIN forcards 1512C This is how to initialize the card SOUMDLIGHT Determine the card address Please use a routine similar to find_card from chapter 3 1 Let s assume the found card address is 0100 100h 256 dec 1 3 an n2 aS 4 5 6 7 Ve pe VE LEER o as a Reset the card by reading from address 0100 Write FF into address 0100 Write 03 into address 0101 0100 1 This selects est address 03FF in the internal card RAM Write AA into address 0102 0100 2 Read address 0102 0100 2 If the return value is AA the card has been found If the return
17. have chosen the 8 bit wide bus As all DMX data simply represent 8 bit data this is no restriction If 16 it data are needed DMX by itself requires to split these data into a HighByte and a LowByte the order of which is solely defined by the unit e g scanner attached to the DMX line All data and the card operating system are held within an on board RAM which can be accessed through the card base address and the subsequent four adresses The onboard RAM areaallocation is as follows 0000 03FF Block 0 3 Operating system of the 8032 80C320 CPU 0400 05FF Block 4 5 DMX data 0600 1 FFF free for user data Within the card there are two data paths from the PC into the DMX RAM and vice versa from the DMX RAM to the RS 485 output The PC has nothing more to do than write the output data into the DMX memory beginning from 0400 512DMX channels occupy 512 bytes of data thus Channel 1 gt 0400 channel 2 gt 0401 channel 512 gt 05FF This completes the data transfer from the PC and the host CPU as free for other tasks The card CPU collects the data generates the DMX data stream and sends all to the RS 485 output Both microprocessors have to access the same RAM and that requires that to avoid collision the card CPU be halted while the PC accesses the card Onboard circuitry is supervising the PC access and controls the card processor accordingly PUTTING THE CARD TO WORK Before writing DMX data to
18. he Software The software for this interface card consists of several parts ready to use application programs for MS Windows the PC card operating system example programs a Dynamic Link Library DLL for Windows Information for Windows Users Several projects are availble in source code format Please have a look at our support website http www pcdmx512 com and check the SOFTWARE SKELETONS department Wherever possible all source code files are saved as ASCIIfiles This allowsto open and browse the files using any ASCII text editor The Card Operating System Thecardoperating system is neededto enable the card fulfulling the basic functions sending and receiving DMX512 Full compatibility to both DMX standards USITT DMX 512 1990 and DIN 56930 2 is ensured Furthermore the card will be able to send receive future DMX 51 2 2000 The operating system file is a file specific to a card type and is supplied as binary file This file must be transferred into the card memory area Card type Filename 1512A SLHDMX12 BIN 1512B SLHDMX16 BIN 1512B LC SLHDMX12 BIN 1512C SLHDMX17 BIN If you need a DOS loader to transfer the card OS a suitable program can be found as file INITLO EXE in folder DMXM 512BYXSOURCES Please refer to the appropriate programming language section to find the method for OS transfer Windows applications can use the voWOS CardAd r call to transfer the OS file or copy the file contents byte by byte Example
19. k after Break typ 8us 8 number of channels 44 us typ 512 44 22528 number of channels Interdigit time typ 512 0 B 0 Mark before Break time typ 100 us 100 total us 22724 SOUMDLIGHT Looking ahead No software will ever be ready The same applies to DMX PC interfaces and we are busy developing new stuff If you would like to comment on this we always welcome your opinion Please mailto info pcdmx com Please keep in mind for your own implementations The USITT DMX512 1990 protocol describes 512 channels but does not define the need to transfer all 512 slots Transferring lesser channels will enable you to program much higher repeat rates than the 44 Hz originally defined for DMX512 The card will support this simply by setting other parameters Feel free to experiment while you go The enclosed SLH CD ROM 2 is filled with various examples for our PC interface cards Since all cards are to be programmed similarly many examples can easily be transferrd to another card type New user programs additional utilities and Visual Basic programming lessons german language for explanations can be found on our internet domain http www soundlight de Additionally we have set up a special support site exclusively dedicated to PC DMX interfaces This site also lists third party software which is available for the interfaces The URL is http www pcdmx512 com and is available in english language also
20. ng the installation and the use ofthe software All applications and informations regarding operation of the interface card 1512B can be found on the accompanying CD folderDMXM 512B Late news which could notbe printed can be found in DMX 1512B LATEST If available eech folder has a READ ME or README TXT file Please readthese files before using or copying data or before installing programs Remember that most information given is for developers and required special attention Also please check our website regularly This is a special support website for DMX512 pc interfaces and is available at http www pcdmx com Have fun and good luck If you have any comments and suggestions want to report errors or submit your application for publication we always welcome your input Simply mail to info pcdmx com SOUMDLIGHT Table of contents The Hardware Installation of the DMX512 Interface card How to prepare an adapter cable Adresses of the DMX interface card Functional description of the card The Software The card operating system The DLL for Windows Application programs Program examples Pascal functions in high level language Starting and detecting the card with your own software Comments SOUMDLIGHT 1 1 Installation of the DMX512 Interface card 1512B These are the few steps required to install your card 1 Unplug the computer from mains supply This applies especially to computers with ATX power su
21. particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by switching the equipment off and on the user in encouraged to to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different to that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help SOUMDLIGHT Introduction DMX512 has gained wide acceptance within the lighting industry The protocol originally published by USITT United States Institute for Theatre Technology Inc New York http www usitt org uses the common RS 485 interface for data transmission and describes a method to transfer control information for up to 512 channels slots of information A copy of this proposal has been published as german standard DIN 56930 2 which is available through Beuth Verlag Berlin http www beuth de Atpresent the international protocol working group headedby ESTA Entertainment and Services Technology Association http www esta org is working on an implementation of DMX 512 2000 This protocol is expected tobe fully compatible to DMX51 2 1990 but requires additional protection As all DMX ports of the 1512B interface card are optically isolated this card already fulfills these re
22. pply as the internal PSU continues to deliver power even if the computer has been switched off by softweare command and thus the PC may start up erroneously 2 Open the case 3 Remove the fastening screw from a free ISA slot usually black 4 Gently insert the card and press into slot 5 Re fitfastening screw 6 Close the computer housing and plug the DMX512 adapter into the 9 pin outlet o fthe DMX interface card IMPORTANT Always make sure that the computer is completely separated from any mains supply when installing or replacing interface cards connecting or disconnecting plugs and cables or setting jumpers If you are not absolutely familiar with how to install change or replace interface cards please refer to a qualified technician SOUMDLIGHT 1 2 Making a DMX Adaptor The DMX interface card 1512B consists of two separate and optically isolated DMX ports and thus features two female 9 pin Sub D output connector jacks Each port has a DMX input and a DMX output thus you may need two identical cable adaptors The USITT standard DMX51 2 1990 requires a 5 pin XLR plug as standard DMX512 connector This isthe standard pinout of the XLR connector Pin 1 GND screen shield Pin2 DMX Pin3 DMX Pin4 Reserve DMX 2 Link Pin5 Reserve DMX 2 Link DMX outputs shall use female DMX inputs shall use male connectors To prepare a Suitable adaptor cable please connect COMPUTER DMX Equipment Sub D 9pin XLR 5 pin
23. quirements The advantage of digital control is the precision of control the speed achieved and the simple wiring scheme of the attached units due to the use of a bus structure These are the advantages presented by our DMX51 2 interface cards 1512A 1512B and 1512B These cards can control up to 512 dimming channels 44 times per second which is equivalent to a data transfer rate of 250 000 bit second All interface cards have been designed for use within a IBM compatible PC equipped with ISA Bus Though is does not matter which PC architecture you are using any CPU type from 8088 8086 80286 80386 80486 through Pentium or Athlon will do we recommend to use afast machine when designing complex graphic user interfaces The interface by itself is a so called intelligent card that is the card has its own microprocessor who takes care forthe generation ofthe DMX512 signal andthe data output Thusthe PC CPUis freed from thesetasks and can run your application program atfull speed Though there are standard RS 485 interface cards available these cards lack on board intelligence and have to be driven continuously by the PC host CPU As the DMX signal has to be generated continuously this consumes immense computing power and slows down the application software considerably Our cards just need synchronization and leave the full computing power at your application To putthe DMX interface to work please read the following chapters demonstrati
24. rs Dummy Byte Example Declare Function voDMXStop Lib SLHDMX2 DLL ByVal CardAdr Name vbDMXStop Purpose Stops the card CPU Reset for cards 1512B Type Function Calling parameters CardAdr Word Return parameters Dummy Byte Example Declare Function voDMxXReset Lib SLHDMX2 DLL ByVal CardAdr Name vbDMXStart Purpose Starts the card CPU Reset off for cards 1512B Type Function Calling parameters CardAdr Word Return parameters Dummy Byte Example Declare Function voDMXResOff Lib SLHDMX2 DLL ByVal CardAdr Name vbWOS Purpose transfers the standard OS for cards 1512A 1512B 1512B LC 1512B Type Sub Calling parameters CardAdr Word Cardtype Byte 1512A Cardtype 12 1512B Cardtype 16 1512B LC Cardtype 12 1512C Cardtype 17 Return parameters Example Declare Sub voWOS Lib SLHDMX2 DLL ByVal CardAdr ByVal Cardtype DUMMY denominates a value without meaning Please refer to the source code of application DESK6 which shows how to use the DLL functions within your project SOUMDLIGHT Memory allocation of DMX Card 1512B 0000 03EF 03F0 03FE 0400 05FF 0600 0FFF 1000 1FFF Operating system Operating system parameters Send data for channels 1 512 reserved free User RAM Operating System Parameters 03F0 03F 1 03F3 03F4 03F5 03F6 Start Sync Duration typical value 60 Length of sync pulse RE
25. s for various programming languages can be found asprogramming skeletons on our support website http Awww pcdmx com Before starting the operating system transfer it is necessary to reset the card once This is accomplished by reading the card base address or using Windows applications calling the vbDMXStop CardAdr function Aftertransferring the OS file remove the reset by reading the card base Address 3 or calling the DLL function voDMXStart Cardadr Tie SEN Pextgumty SOUNDLIGHT 2 2 The Windows DLL The Windows folder contains a Dynamic Link Library SLHDMX2 DLL 16 Bit version for Windows 3 1 3 11 andaDLLSLHDMX33 DLL 32 Bit Version for Windows 95 98 Millennium These libraries contain all functions necessary to communicate with the card Name vbCardAdr Purpose Detect the adress of the interface card within the PC for cards 1512A 1512B 1512B LC 1512B Type Function Calling parameters 0 Word or CardAdr Word Return parameters CardAdr Word Example Declare Function voCardadr Lib SLHDMX2 DLL ByVal w96 Callingparameter 0 The function vbCardAar checks if a DMX interface card is present and returns the card base address If no card can be found Adress 0 will be returned Calling parameter CardAdr Checks ifa card is present at the specified base address If found card adress is returned if none present zeroreturned Name vbWByte Purpose Write a Byte into the DMX card RAM for cards 1512A
26. tion of the interface card Additionally you may wantto erase the DMX data RAM before operation to start from a blank buffer To do so simply write 0 to all data RAM ocations NOTICE Thecard address 1 register is alatch values written to this register remain intact until overwritten Unlessthis value changes it need notbe re written This may save several accessesto the card The examples above always write all registers for clarity Using the card After initialization and setting of the OS parameters if required the card is ready to go Start the card by issuing the command 11 Readcard address 3 start card CPU releases RESET command To transfer data into the card or retrieving data from the card we recommend to install a timer performing these tasks exery xx milliseconds typ 50ms Write LowByte DMX channel to card address 0 Write HiByte DMX channel OR 04 to card address 1 Write DMX data to card address 2 1 2 3 4 Repeat 1 through 3 for all DMX channels needing an update pom ewe YS NH The update rate possible and thus the timer setting depends on the total channel count If fewer channels slots are sent the time interval may be set to smaller values We do not recommend to use timer intervals below 10ms as this might pose problems to Windows or to the attached DMX devices not to the interface card The total DMX frame duration can be calculated from Start byte duration typ 88 us 88 Mar
27. value is different repeat steps 2 5 for addresses 0120 0140 0160 Transfer the card OS into the card to make it functional Assume to find a 1512B card 1 2 Reset the card by reading from address 0100 Openfile SLHDMX17 BIN Note Close this file before opening it This ensures to get no file open error The pointer will then point to the beginning of the file Open the file as RANDOM or as BINARY depending on your preferred programming language The file is then transferred into the card This is done byte by byte null bytes must also be transferred Set the RAM address pointer 0000 Write the LowByte of this RAM address into Card address 0 Write the HighByte of this RAM address into Card address 1 Read a Byte from file and write this byte into Card address 2 Increment RAM address and repeat steps 4 to 5 until EOF We have nom transferred the card OS into the card memory and are ready to start the card CPU and detect the card type Read card address 3 to start the card and wait at minimum 100 us before reading the result Write F9 into card address 0 Write 03 into card address 1 You have now selected return address 03F9 within the card RAM Read card address 2 Return value 04 card 1512C present SOUMDLIGHT Return value 05 card 1512C present Return value 80 card 1512A or 1512B LC 12 MHz card present Return value 01 card 1512B 16 MHz card present Ifa 1512B card h
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