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B&B Electronics 232OPSDA manual

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Table of contents for the manual

  • Page 1

    Docum ent ation Num ber 232OPSDA1397 Manual Cover Page B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Optically Isolated Serial Data Acquisition Module 232OPSDA Module Docum ent ation Nu m ber 232OPSD A1397 This product Designed a nd Manufactur ed In Ottawa, Illinois USA of dom es tic and i m porte[...]

  • Page 2

    Docum ent ation Num ber 232OP SDA1397 Manual Table of Content s i B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 TABLE OF CONTENTS CHAPTER 1: IN TRODUCTION ...........................................................1 232OPSDA F EA TURES ..............................................................[...]

  • Page 3

    ii Table of Content s Docum ent ation Num ber 232OP SDA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 APPENDIX A: DEC T O HEX TO ASCII CONVERSION.......... A-27 APPENDIX B: 232OPSDA SC HEMATIC & BOARD .................B-29[...]

  • Page 4

    Docum ent ation Num ber 232OP SDA1397 Manual 1 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Chapter 1: Introducti on 232OPSDA Features The 232O PSDA is an optically isolated data acquisition module that is connected to your com puter’s RS- 232 serial port. It provides 2500V of optical is olatio[...]

  • Page 5

    2 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Figure 1.2: General Block Diagram Packing List Exam ine the shipping car ton and the contents for phy sical damage. T he f ollowing items s hould be in the shipping carton: 1. 232OPSDA m odule 2. One 232OPS[...]

  • Page 6

    Docum ent ation Num ber 232OP SDA1397 Manual 3 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Software Installation The 232OPSDA c omes with several a dem onstration program . To ins tall these program s on your hard drive: 1. Place the disk in drive A. 2. Type A: and press the <ENT ER> key .[...]

  • Page 7

    4 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Digital Input Channels: 1 Voltage Range: - 30VDC to +30VDC Low Voltage: -30VDC to 1.0VDC High Voltage: 2.0VDC to 30VDC Leakage Cur rent: 1 µ A ma xi mu m Digital Output Channels: 1 Low Voltage: 0.6VDC @ 8.[...]

  • Page 8

    Docum ent ation Num ber 232OP SDA1397 Manual 5 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Chapter 2: Connections This chapter will cover the connec tions required for the 232OPSDA. Four s ets of c onnections are requir ed: A/D converter, digital I/O, serial por t, and power supply connections. [...]

  • Page 9

    6 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Figure 2.1: Current Loop Channel Connections (A /D 0) NOTE: W hen using the 4-20m A Current Loop Input with the setup shown in Figure 2.1, A/D 1-5 cannot be us ed and should be connected to the term inal bl[...]

  • Page 10

    Docum ent ation Num ber 232OP SDA1397 Manual 7 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Digital I/O Connections The digital I/O connections ar e m ade on the I/O port, which consists of term inal bloc ks. T able 2.1 shows the term inal block assignm ents. Digital Input Ter minal block 7 is th[...]

  • Page 11

    8 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Table 2.2 - RS-232 Connector Pinout Table 2.3 - 232OPSDA T o DTE Connections Table 2.4 - 232OPSDA T o DCE Connections DB25S Pin # Signal 232OPSD A Function Notes 2 Transmit Data (T D) Input Connection is re[...]

  • Page 12

    Docum ent ation Num ber 232OP SDA1397 Manual 9 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Pow e r Supply Connections The 232OPSDA r equires an isolated ex ternal power supply that is able to produce 9- 16VDC @10mA in addition to the por t power. The pos itive(+) lead of the power s upply is con[...]

  • Page 13

    Docum ent ation Num ber 232OP SDA1397 Manual 11 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Chapter 3: Commands Only three comm ands ar e required to operate the 232OPSDA: the read A/D com m and, read digital I/O c omm and, and the set digital output com m and. The co mm and string cons ists of [...]

  • Page 14

    12 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Table 3.2 - Equivalent V al ues Sy ntax As mentioned earlier, the comm and string consis ts of four bytes. The f irst byte is the start of mes sage by te. T he start of mess age by te is alway s the “!?[...]

  • Page 15

    Docum ent ation Num ber 232OP SDA1397 Manual 13 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 The com m and syntax for the extended com m and set is shown below: Command Syntax: #0____ |||||| ||||| Compliment |||| Data Byte |||2 nd Command Byte ||1 st Command Byte | Address Byte Start of Message B[...]

  • Page 16

    14 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Table 3.3 - Read A /D Response NOTE: T here are thr ee test c hannels that can be r ead: Ref+, Ref-, and Ref+/2. Specify 13 (0Dh) to read Ref +, 12 (0Ch) to read Ref- , and 11 (0Bh) to read Ref +/2. Readin[...]

  • Page 17

    Docum ent ation Num ber 232OP SDA1397 Manual 15 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Chapter 4: A / D T his c hapter will deal with the various A/D channels and manipulating the data obtained f rom them . Sampling Rate The A/D conver ter has a c onversion tim e around 10 mic roseconds , h[...]

  • Page 18

    16 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 inverting am plifier, rem ove R15 and calculate values for R13 and R14 using the equation below. Gai n V Vin R13 R 14 == + 0 1 NOTE: V 0 is the voltage read by the A/D converter chip, and Vin is the voltag[...]

  • Page 19

    Docum ent ation Num ber 232OP SDA1397 Manual 17 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 The signal conditioning c ircuit f or this A/D input channel has been designed to be easily m odified. In the original c onfiguration, R5 and R6 are left O PEN (they are not present). Thes e two spaces ar[...]

  • Page 20

    Docum ent ation Num ber 232OP SDA1397 Manual 19 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Chapter 5: Sof tw are A pplication Program Interface The application program interf ace (API) is a set of routines that mak es it easy to comm unicate with the 232OPSDA m odule from a 16- bit DOS applicat[...]

  • Page 21

    20 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 segm ent and of fset addres ses of the integer array where the results of the A/D conver sion will be stored. Returns: FALSE (zero) if the function f ails, otherwise it retur ns TRUE (non- zero). B232OPSDA[...]

  • Page 22

    Docum ent ation Num ber 232OP SDA1397 Manual 21 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 B232OPSDA _ SetDigitalOutput Purpose: This function s ets the states of the digital output lines. Syntax: C: BOOL B232OPSDA_SetDigitalOutput (WORD hComDev , BYTE modAddr , WORD lines, WORD states); Pasca [...]

  • Page 23

    22 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Syntax: C: WORD initComPort (WORD portAddr , BYTE irq , LONG baudRate ); Pasca l: function initComPort ( portAddr : word; irq : byte; baudRate : longint) as integer; BASIC: FUNCTION initComPort% (BYVAL por[...]

  • Page 24

    Docum ent ation Num ber 232OP SDA1397 Manual 23 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 ‘ Open the serial port. ‘ OPEN “COM1:9600,N,8,1,cd,ds” FOR RANDOM AS #1 PAUSE (.5) ‘ Close the serial port when finished. ‘ CLOSE #1 Read A /D Command The read A/D channels com mand r eturns t[...]

  • Page 25

    24 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Step 5 - Repeat Step 3 and 4 until each channel has been com pleted. Step 6 - The var ious A/D channels have s ignal conditioning, so ma thematic al manipulation of the voltage read will have to be perform[...]

  • Page 26

    Docum ent ation Num ber 232OP SDA1397 Manual 25 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Step 1 - Construc ting the com mand s tring: Command$ = “!0RD” Step 2 - Tr ansm itting the com mand s tring: Print #1, Command$ Step 3 - Receiving the data: Reply$ = INPUT$ (1, #1) Step 4 - Manipulati[...]

  • Page 27

    26 Documentat ion Number 232OP S DA1397 Manual B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 Set Digital Output State T he Set Digital O utput com m and is used to set the s tate of the digital output line. T his c omm and requir es a data byte. The data by te is used to spec ify the output state.[...]

  • Page 28

    Docum ent ation Num ber 232OP SDA1397 Manual Appendix A A-1 B&B Electronics -- P O Box 1040 -- Ottaw a, IL 61350 PH (815) 433-5100 -- FA X (815) 433-5105 A ppendix A: Decimal t o Hex to A SCII Conversion DECIMAL to HEX to ASCII CONVERSION TABLE DEC HEX ASCII KEY DEC HEX ASCII DEC HEX ASCII DEC HEX ASCII 0 0 NUL ctrl @ 32 20 SP 64 40 @ 96 60 ` 1[...]