
BRAIN BOXES

AT DUAL PORT RS422/485

Card Type Serial card
Chip Set  Unidentified
Data Bus  8-bit ISA

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  9-pin serial port 1          CN1     9-pin serial port 2          CN2

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Serial port 1 half duplex gate          J5A           Pins 1 & 2
      disabled                                                closed

      Serial port 1 half duplex gate          J5A           Pins 2 & 3
      enabled when RTS true                                   closed

     Serial port 1 half duplex RTS           J5B           Pins 1 & 2
      disabled                                                closed

      Serial port 1 half duplex RTS           J5B           Pins 2 & 3
      enabled                                                 closed

     Serial port 1 half duplex CTS1          J5C           Pins 1 & 2
      disabled                                                closed

      Serial port 1 half duplex CTS1          J5C           Pins 2 & 3
      enabled                                                 closed

     Serial port 2 half duplex gate          J6A           Pins 1 & 2
      disabled                                                closed

      Serial port 2 half duplex gate          J6A           Pins 2 & 3
      enabled when RTS true                                   closed

     Serial port 2 half duplex RTS           J6B           Pins 1 & 2
      disabled                                                closed

      Serial port 2 half duplex RTS           J6B           Pins 2 & 3
      enabled                                                 closed

     Serial port 2 half duplex CTS1          J6C           Pins 1 & 2
      disabled                                                closed

      Serial port 2 half duplex CTS1          J6C           Pins 2 & 3
      enabled                                                 closed

                   SERIAL PORT ADDRESS SELECTION

        Setting              J2 Port 1              J2 Port 2

         COM1            Pins 1 & 2 closed      Pins 2 & 3 closed

         COM2            Pins 4 & 5 closed      Pins 5 & 6 closed

         COM3            Pins 7 & 8 closed      Pins 8 & 9 closed

         COM4           Pins 10 & 11 closed    Pins 11 & 12 closed

         COM5           Pins 13 & 14 closed    Pins 14 & 15 closed

         COM6           Pins 16 & 17 closed    Pins 17 & 18 closed

         COM7           Pins 19 & 20 closed    Pins 20 & 21 closed

         COM8           Pins 22 & 23 closed    Pins 23 & 24 closed

                     SERIAL PORT 1 INTERRUPT SELECTION

                  IRQ                                  J3

                   IRQ2                        Pins 11 & 12 closed

                  IRQ3                        Pins 9 & 10 closed

                   IRQ4                         Pins 7 & 8 closed

                   IRQ5                         Pins 5 & 6 closed

                   IRQ6                         Pins 3 & 4 closed

                   IRQ7                         Pins 1 & 2 closed

                   IRQ10                       Pins 13 & 14 closed

                   IRQ11                       Pins 15 & 16 closed

                   IRQ12                       Pins 17 & 18 closed

                   IRQ14                       Pins 19 & 20 closed

                   IRQ15                       Pins 21 & 22 closed

                     SERIAL PORT 2 INTERRUPT SELECTION

                  IRQ                                  J4

                   IRQ2                        Pins 11 & 12 closed

                  IRQ3                        Pins 9 & 10 closed

                   IRQ4                         Pins 7 & 8 closed

                   IRQ5                         Pins 5 & 6 closed

                   IRQ6                         Pins 3 & 4 closed

                   IRQ7                         Pins 1 & 2 closed

                   IRQ10                       Pins 13 & 14 closed

                   IRQ11                       Pins 15 & 16 closed

                   IRQ12                       Pins 17 & 18 closed

                   IRQ14                       Pins 19 & 20 closed

                   IRQ15                       Pins 21 & 22 closed

                     SERIAL PORT 1 MULTIPLEX SELECTION

                 Setting                                 J7

             Multiplex disabled              Pins 1 & 3, 2 & 4 closed

         Signal transmitted & received        Pins 3 & 5, 4 & 6 closed

           Signals shorted together           Pins 3 & 5, 4 & 6 closed

                     SERIAL PORT 2 MULTIPLEX SELECTION

                 Setting                                 J8

             Multiplex disabled              Pins 1 & 3, 2 & 4 closed

         Signal transmitted & received        Pins 3 & 5, 4 & 6 closed

           Signals shorted together           Pins 3 & 5, 4 & 6 closed

