
KATRON TECHNOLOGIES, INC.

ARC-120

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Star

              Linear bus
Wiring Type   RG-62A/U 93ohm coaxial

              Unshielded twisted pair
Boot ROM      Available


[Image]

                               NODE ADDRESS

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

   0       -       -        -       -       -        -       -        -

   1      Off      On      On      On       On      On       On      On

   2      On      Off      On      On       On      On       On      On

   3      Off     Off      On      On       On      On       On      On

   4      On       On      Off     On       On      On       On      On

  251     Off     Off      On      Off     Off      Off     Off      Off

  252     On       On      Off     Off     Off      Off     Off      Off

  253     Off      On      Off     Off     Off      Off     Off      Off

  254     On      Off      Off     Off     Off      Off     Off      Off

  255     Off     Off      Off     Off     Off      Off     Off      Off

  Note: Node address 0 is used for messaging between nodes and must not
  be used.

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

                                CONNECTIONS

                Function                             Location

    External LED1 (See LED table for                   JP1
           LED1 indications)

    External LED2 (See LED table for                   JP2
           LED2 indications)

                                 BOOT ROM

                Setting                                JP3

                 Disable                       Pins 2 & 3 closed

                   Enable                       Pins 1 & 2 closed

                             INTERRUPT REQUEST

    IRQ         JP4A         JP4B        JP4C         JP4D        JP4E

       2      Closed        Open        Open         Open        Open

        3       Open        Closed       Open         Open        Open

        4       Open         Open       Closed        Open        Open

        5       Open         Open        Open        Closed       Open

        7       Open         Open        Open         Open       Closed

                             CABLE TYPE

               Type                          JP5A - JP5C

     Unshielded twisted pair              Pins 1 & 2 closed

  AUI transceiver via DB-15 port          Pins 2 & 3 closed

                            ONBOARD TERMINATOR

                Setting                                JP6

                 Disabled                      Pins 1 & 2 closed

                   Enabled                      Pins 2 & 3 closed

      Notes:If the card is on either end of a linear bus network segment,
      the onboard terminator can be used instead of using an external
      terminator.

                             I/O BASE ADDRESS

        Address              JP7F             JP7G             JP7H

         260-26Fh         Pins 2 & 3       Pins 2 & 3        Pins 2 & 3
                            closed           closed           closed

         290-29Fh         Pins 1 & 2       Pins 2 & 3        Pins 2 & 3
                            closed           closed           closed

        2E0-2EFh         Pins 2 & 3       Pins 1 & 2        Pins 2 & 3
                            closed           closed           closed

         2F0-2FFh         Pins 1 & 2       Pins 1 & 2        Pins 2 & 3
                            closed           closed           closed

         300-30Fh         Pins 2 & 3       Pins 2 & 3        Pins 1 & 2
                            closed           closed           closed

         350-35Fh         Pins 1 & 2       Pins 2 & 3        Pins 1 & 2
                            closed           closed           closed

         380-38Fh         Pins 2 & 3       Pins 1 & 2        Pins 1 & 2
                            closed           closed           closed

         3E0-3EFh         Pins 1 & 2       Pins 1 & 2        Pins 1 & 2
                            closed           closed           closed

                  BASE MEMORY ADDRESS & BOOT ROM ADDRESS

    Base Address         Boot ROM      JP7A   JP7B    JP7C   JP7D   JP7E
                         Address

      C0000-C07FFh    C2000-C3FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     2&3    2&3     2&3

      C0800-C0FFFh    C2000-C3FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     2&3    2&3     2&3

      C1000-C17FFh    C2000-C3FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     2&3    2&3     2&3

      C1800-C1FFFh    C2000-C3FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     2&3    2&3     2&3

      C4000-C47FFh    C6000-C7FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     1&2    2&3     2&3

      C4800-C4FFFh    C6000-C7FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     1&2    2&3     2&3

      C5000-C57FFh    C6000-C7FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     1&2    2&3     2&3

      C5800-C5FFFh    C6000-C7FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     1&2    2&3     2&3

      CC000-CC7FFh    CE000-CFFFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     2&3    1&2     2&3

      CC800-CCFFFh    CE000-CFFFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     2&3    1&2     2&3

      CD000-CD7FFh    CE000-CFFFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     2&3    1&2     2&3

      CD800-CDFFFh    CE000-CFFFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     2&3    1&2     2&3

     D0000-D07FFh    D2000-D3FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     1&2    1&2     2&3

      D0800-D0FFFh    D2000-D3FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     1&2    1&2     2&3

      D1000-D17FFh    D2000-D3FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     1&2    1&2     2&3

      D1800-D1FFFh    D2000-D3FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     1&2    1&2     2&3

      D4000-D47FFh    D6000-D7FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     2&3    2&3     1&2

      D4800-D4FFFh    D6000-D7FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     2&3    2&3     1&2

      D5000-D57FFh    D6000-D7FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     2&3    2&3     1&2

      D5800 D5FFFh    D6000-D7FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     2&3    2&3     1&2

      D8000-D87FFh    DA000-DBFFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     1&2    2&3     1&2

      D8800-D8FFFh    DA000-DBFFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     1&2    2&3     1&2

      D9000-D97FFh    DA000-DBFFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     1&2    2&3     1&2

      D9800-D9FFFh    DA000-DBFFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     1&2    2&3     1&2

      DC000-DC7FFh    DE000-DFFFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     2&3    1&2     1&2

      DC800-DCFFFh    DE000-DFFFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     2&3    1&2     1&2

      DD000-DD7FFh    DE000-DFFFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     2&3    1&2     1&2

      DD800-DDFFFh    DE000-DFFFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     2&3    1&2     1&2

      E0000-E07FFh    E2000-E3FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    2&3     1&2    1&2     1&2

      E0800-E0FFFh    E2000-E3FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    2&3     1&2    1&2     1&2

      E1000-E17FFh    E2000-E3FFFh     Pins   Pins    Pins   Pins    Pins
                                       2&3    1&2     1&2    1&2     1&2

      E1800-E1FFFh    E2000-E3FFFh     Pins   Pins    Pins   Pins    Pins
                                       1&2    1&2     1&2    1&2     1&2

  Note:Pins designated should be in the closed position.

                             DIAGNOSTIC LED(S)

     LED         Color         Status                Condition

    LED1         Green           On          Network connection is good

    LED1         Green          Off         Network connection is broken

    LED2          Red            On         Data is being transmitted or
                                                     received.

    LED2          Red           Off         Data is not being transmitted
                                                    or received.

