
B & B ELECTRONICS

3PXCC1A, 3PXCC1B, 3PXCC2A, 3PXCC2B

Card Type        Serial
Chipset          16550A (3PXCC1A, 3PXCC2A)

                 16750 (3PXCC1B, 3PXCC2B)
I/O Options      Serial ports (2 on 3PXCC2A, 3PXCC2B only)
Data Bus         8/16 bit ISA

[Image]

                                CONNECTIONS

        Function             Label            Function            Label

  RS-232, RS-422, or         PORT1     RS-232, RS-422, or         PORT2
  RS-485 serial port 1                 RS-485 serial port 2

            Note:PORT2 has no function on models 3PXCC1A and 3PXCC1B.

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

     RS-485 receiver disabled when             JP1/C        Pins 1 & 2
      transmitting on port 1                                  closed

      RS-485 receiver always enabled on         JP1/C        Pins 2 & 3
      port 1                                                  closed

      RS-485 port 1 transmitter enabled on      JP1/D        Pins 2 & 3
      high RTS only                                           closed

      RS-485 port 1 transmitter enabled         JP1/D        Pins 1 & 2
      whenever transmission is attempted                      closed

      RS-422/485 termination enabled on         JP1/E        Pins 2 & 3
      port 1                                                  closed

      RS-422/485 termination disabled on        JP1/E        Pins 1 & 2
      port 1                                                  closed

     Serial port 1 clock speed normal           JP1G        Pins 2 & 3
                                                              closed

      Serial port 1 clock speed multiplied       JP1G        Pins 1 & 2
      by 4                                                    closed

     RS-485 receiver disabled when             JP2/C        Pins 1 & 2
      transmitting on port 2                                  closed

      RS-485 receiver always enabled on         JP2/C        Pins 2 & 3
      port 2                                                  closed

      RS-485 port 2 transmitter enabled on      JP2/D        Pins 2 & 3
      high RTS only                                           closed

      RS-485 port 2 transmitter enabled         JP2/D        Pins 1 & 2
      whenever transmission is attempted                      closed

      RS-422/485 termination enabled on         JP2/E        Pins 2 & 3
      port 2                                                  closed

      RS-422/485 termination disabled on        JP2/E        Pins 1 & 2
      port 2                                                  closed

     Serial port 2 clock speed normal           JP2G        Pins 2 & 3
                                                              closed

      Serial port 2 clock speed multiplied       JP2G        Pins 1 & 2
      by 4                                                    closed

                        SERIAL PORT 1 CONFIGURATION

  Setting    JP1/A   JP1/B    JP1/C   JP1F/A    JP1F/B   JP1F/C   JP1F/D

  RS-232     Pins     N/A     N/A     Pins 2    Pins 2   Pins 2    Pins 2
             1 & 2                     & 3       & 3      & 3       & 3

  RS-422     Pins     Pins    Pins    Pins 1    Pins 1   Pins 1    Pins 1
             2 & 3   2 & 3    2 & 3    & 2       & 2      & 2       & 2

  RS-485     Pins     Pins     See    Pins 1    Pins 1   Pins 1    Pins 1
             2 & 3   1 & 2    note     & 2       & 2      & 2       & 2

            Note:For correct settings of JP1/C for RS-485 mode, see its
            entry in the User Configurable Settings table.

            Pins designated are in the closed position.

                        SERIAL PORT 2 CONFIGURATION

  Setting    JP2/A   JP2/B    JP2/C   JP2F/A    JP2F/B   JP2F/C   JP2F/D

  RS-232     Pins     N/A     N/A     Pins 2    Pins 2   Pins 2    Pins 2
             1 & 2                     & 3       & 3      & 3       & 3

  RS-422     Pins     Pins    Pins    Pins 1    Pins 1   Pins 1    Pins 1
             2 & 3   2 & 3    2 & 3    & 2       & 2      & 2       & 2

  RS-485     Pins     Pins     See    Pins 1    Pins 1   Pins 1    Pins 1
             2 & 3   1 & 2    note     & 2       & 2      & 2       & 2

            Note:For correct settings of JP2/C for RS-485 mode, see its
            entry in the User Configurable Settings table.

            Pins designated are in the closed position.

                     SERIAL PORT 1 INTERRUPT SELECTION

     Setting       JP3/A    JP3/B     JP3/C    JP3/D     JP3/E     JP3/F

      IR/FONT>     Pins 1    Open     Open      Open     Open      Open
                    & 2

        IRQ3       Open     Pins 1    Open      Open     Open      Open
                             & 2

       IRQ4       Open      Open     Pins 1    Open     Open      Open
                                       & 2

        IRQ5       Open      Open     Open     Pins 1    Open      Open
                                                & 2

        IRQ6       Open      Open     Open      Open     Pins 1    Open
                                                          & 2

        IRQ7       Open      Open     Open      Open     Open      Pins 1
                                                                    & 2

        IRQ10      Open      Open     Open      Open     Open      Open

        IRQ11      Open      Open     Open      Open     Open      Open

        IRQ12      Open      Open     Open      Open     Open      Open

        IRQ14      Open      Open     Open      Open     Open      Open

        IRQ15      Open      Open     Open      Open     Open      Open

                 SERIAL PORT 1 INTERRUPT SELECTION (CONT)

      Setting        JP3/G      JP3/H       JP3/I      JP3/J      JP3/K

       IR/FONT>       Open       Open       Open       Open        Open

         IRQ3         Open       Open       Open       Open        Open

        IRQ4         Open       Open       Open       Open        Open

         IRQ5         Open       Open       Open       Open        Open

         IRQ6         Open       Open       Open       Open        Open

         IRQ7         Open       Open       Open       Open        Open

         IRQ10      Pins 1 &     Open       Open       Open        Open
                       2

         IRQ11        Open     Pins 1 &     Open       Open        Open
                                  2

         IRQ12        Open       Open      Pins 1 &    Open        Open
                                              2

         IRQ14        Open       Open       Open      Pins 1 &     Open
                                                         2

         IRQ15        Open       Open       Open       Open      Pins 1 &
                                                                    2

            Note:Pins designated are in the closed position.

                     SERIAL PORT 2 INTERRUPT SELECTION

     Setting       JP3/A    JP3/B     JP3/C    JP3/D     JP3/E     JP3/F

      IR/FONT>     Pins 2    Open     Open      Open     Open      Open
                    & 3

        IRQ3       Open     Pins 2    Open      Open     Open      Open
                             & 3

       IRQ4       Open      Open     Pins 2    Open     Open      Open
                                       & 3

        IRQ5       Open      Open     Open     Pins 2    Open      Open
                                                & 3

        IRQ6       Open      Open     Open      Open     Pins 2    Open
                                                          & 3

        IRQ7       Open      Open     Open      Open     Open      Pins 2
                                                                    & 3

        IRQ10      Open      Open     Open      Open     Open      Open

        IRQ11      Open      Open     Open      Open     Open      Open

        IRQ12      Open      Open     Open      Open     Open      Open

        IRQ14      Open      Open     Open      Open     Open      Open

        IRQ15      Open      Open     Open      Open     Open      Open

                 SERIAL PORT 2 INTERRUPT SELECTION (CONT)

      Setting        JP3/G      JP3/H       JP3/I      JP3/J      JP3/K

       IR/FONT>       Open       Open       Open       Open        Open

         IRQ3         Open       Open       Open       Open        Open

        IRQ4         Open       Open       Open       Open        Open

         IRQ5         Open       Open       Open       Open        Open

         IRQ6         Open       Open       Open       Open        Open

         IRQ7         Open       Open       Open       Open        Open

         IRQ10      Pins 2 &     Open       Open       Open        Open
                       3

         IRQ11        Open     Pins 2 &     Open       Open        Open
                                  3

         IRQ12        Open       Open      Pins 2 &    Open        Open
                                              3

         IRQ14        Open       Open       Open      Pins 2 &     Open
                                                         3

         IRQ15        Open       Open       Open       Open      Pins 2 &
                                                                    3

            Note:Pins designated are in the closed position.

                      SERIAL PORT 1 ADDRESS SELECTION

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

        000h       On      On      On       On      On      On       On

        008h      Off      On      On       On      On      On       On

        010h       On     Off      On       On      On      On       On

        018h      Off     Off      On       On      On      On       On

        020h       On      On      Off      On      On      On       On

        2E8h      Off      On      Off     Off      Off     On      Off
      (COM4:)

        2F8h      Off     Off      Off     Off      Off     On      Off
      (COM2:)

        3D8h      Off     Off      On      Off      Off     Off     Off

        3E0h       On      On      Off     Off      Off     Off     Off

        3E8h      Off      On      Off     Off      Off     Off     Off
      (COM3:)

        3F0h       On     Off      Off     Off      Off     Off     Off

       3F8h      Off     Off      Off     Off      Off     Off     Off
      (COM1:)

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

                      SERIAL PORT 2 ADDRESS SELECTION

    Setting       SW2/1   SW2/2   SW2/3    SW2/4   SW2/5   SW2/6    SW2/7

        000h       On      On      On       On      On      On       On

        008h      Off      On      On       On      On      On       On

        010h       On     Off      On       On      On      On       On

        018h      Off     Off      On       On      On      On       On

        020h       On      On      Off      On      On      On       On

        2E8h      Off      On      Off     Off      Off     On      Off
      (COM4:)

       2F8h      Off     Off      Off     Off      Off     On      Off
      (COM2:)

        3D8h      Off     Off      On      Off      Off     Off     Off

        3E0h       On      On      Off     Off      Off     Off     Off

        3E8h      Off      On      Off     Off      Off     Off     Off
      (COM3:)

        3F0h       On     Off      Off     Off      Off     Off     Off

        3F8h      Off     Off      Off     Off      Off     Off     Off
      (COM1:)

            Note: A total of 128 base address settings are available. The
            switches are a binary representation of the decimal memory
            addresses. SW2/7 is the Most Significant Bit and switch SW2/1
            is the Least Significant Bit. The switches have the following
            decimal values: SW2/7=512, SW2/6=256, SW2/5=128, SW2/4=64,
            SW2/3=32, SW2/2=16, SW2/1=8. Turn off the switches and add
            the values of the switches that are off to obtain the correct
            memory address. (Off=1, On=0)

