DECISION COMPUTER INTERNATIONAL CO., LTD.

16 CHANNEL RELAY OUTPUT/PHOTO-ISOLATOR

Card Type            Data acquisition
Chip Set             NEC 8255
I/O Options          Opto-isolated input port, relay control output port
Data Bus             8-bit ISA

[Image]

                                CONNECTIONS

          Function             Label           Function           Label

  Breadboard                    BB1      Relay control output      J2
                                         (see pinout below)

  Opto-isolated input (see       J1
  pinout below)

                                 J1 PINOUT

         Function             Pins            Function             Pins

  Channel 1 relay control    1 & 2     Channel 11 relay           21 & 22
                                       control

  Channel 2 relay control    3 & 4     Channel 12 relay           23 & 24
                                       control

  Channel 3 relay control    5 & 6     Channel 13 relay           25 & 26
                                       control

  Channel 4 relay control    7 & 8     Channel 14 relay           27 & 28
                                       control

  Channel 5 relay control    9 & 10    Channel 15 relay           29 & 30
                                       control

  Channel 6 relay control    11 & 12   Channel 16 relay           31 & 32
                                       control

  Channel 7 relay control    13 & 14   Ground                     33 & 34

  Channel 8 relay control    15 & 16   +5V DC power               35 & 36

  Channel 9 relay control    17 & 18   +12V DC power              37 & 38

  Channel 10 relay control   19 & 20   Ground                     39 & 40

                         J2 PINOUT

       Function          Pin          Function         Pin

  Channel 1 negative      1     Channel 11 negative     21

  Channel 1 positive      2     Channel 11 positive     22

  Channel 2 negative      3     Channel 12 negative     23

  Channel 2 positive      4     Channel 12 positive     24

  Channel 3 negative      5     Channel 13 negative     25

  Channel 3 positive      6     Channel 13 positive     26

  Channel 4 negative      7     Channel 14 negative     27

  Channel 4 positive      8     Channel 14 positive     28

  Channel 5 negative      9     Channel 15 negative     29

  Channel 5 positive      10    Channel 15 positive     30

  Channel 6 negative      11    Channel 16 negative     31

  Channel 6 positive      12    Channel 16 positive     32

  Channel 7 negative      13    Ground                  33

  Channel 7 positive      14    Ground                  34

  Channel 8 negative      15    +5V DC power            35

  Channel 8 positive      16    +5V DC power            36

  Channel 9 negative      17    +12V DC power           37

  Channel 9 positive      18    +12V DC power           38

  Channel 10 negative     19    Ground                  39

  Channel 10 positive     20    Ground                  40

                        USER CONFIGURABLE SETTINGS

                 Setting                    Label          Position

  »   Factory configured - do not alter      JP1         Unidentified

                                 INTERRUPT

  Setting     JP2/A      JP2/B     JP2/C     JP2/D      JP2/E     JP2/F

    IRQ2      Closed     Open      Open       Open      Open       Open

    IRQ3       Open     Closed     Open       Open      Open       Open

    IRQ4       Open      Open     Closed      Open      Open       Open

    IRQ5       Open      Open      Open      Closed     Open       Open

    IRQ6       Open      Open      Open       Open     Closed      Open

    IRQ7       Open      Open      Open       Open      Open      Closed

  Disabled     Open      Open      Open       Open      Open       Open

                             BASE I/O ADDRESS

  Setting   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6   SW1/7   SW1/8

      000h   On      On      On      On      On      On      On      On

      004h   Off     On      On      On      On      On      On      On

      008h   On      Off     On      On      On      On      On      On

      00Ch   Off     Off     On      On      On      On      On      On

      010h   On      On      Off     On      On      On      On      On

  »   1A0h   On      Off     Off     On     Off      On      On      On

      3ECh   Off     Off     On      Off    Off     Off     Off     Off

      3F0h   On      On      Off     Off    Off     Off     Off     Off

      3F4h   Off     On      Off     Off    Off     Off     Off     Off

      3F8h   On      Off     Off     Off    Off     Off     Off     Off

      3FCh   Off     Off     Off     Off    Off     Off     Off     Off

            Note: A total of 255 base address settings are available. The
            switches are a binary representation of the decimal memory
            addresses. SW1/1 is the Most Significant Bit and switch SW1/8
            is the Least Significant Bit. The switches have the following
            decimal values: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64,
            SW1/5=32, SW1/6=16, SW1/7=8, SW1/8=4. Turn off the switches
            and add the values of the switches that are off to obtain the
            correct memory address. (Off=1, On=0)

                     DIAGNOSTIC LED(S)

            The function of the LED D33 is unidentified.