Specifications
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Allen-Bradley DH+/DH-485 Device Driver Help
Hardware Configuration of Memory and Interrupt on 1784 KTXD card
Select a unique memory address from the range C800-D700 and a unique Interrupt Request Level (IRQ). The Interrupt
levels allowed are (3,4,5, and 7).
Make sure that the value chosen for the Interrupt is unique by checking the Device Manager.
Memory Configuration
There are two channels on the Allen Bradley 1784-KTX (D) card that you can communicate with (see the Cable
Connections file for more information). If you are planning to use channel 1, turn the knobs (sw3 and sw4) under
Channel 1 to reflect your selected memory address. For example: If you choose address D000, then your sw3 should
point to "D" and sw4 should point to "0." Similarly, if you choose channel 2, turn the knobs (sw1 and sw2) to reflect
your selected memory address.
Interrupt Configuration
If you are using interrupts, you should choose an interrupt level as mentioned above. The KTX (D) card comes with two
jumpers. Each jumper is used for selecting the interrupt level for each of the channels. You should place the jumper
corresponding to your chosen channel number, horizontally across the two pins next to your selected interrupt level.
For example: if you are using channel 1 and you have selected interrupt level 3, you should place one of the jumpers
horizontally across pin 3 under channel number 1. If you are not using interrupts, you should place the jumper
vertically, thus connecting pins of two different interrupt levels (such as 3 and 5).
Configuring the 1784-KT (ISA Bus) Communication Interface Card for DH+
Note: Before handling the card, you must ground yourself by touching a grounded object such as the chassis of your
computer.
Please note the following requirements for the 1784-KT (ISA Bus) card:
The 1784-KT card has a DIP switch configuration which must be configured to match the driver's KT
communications address settings.
The selected address must not conflict with any other address used by your computer.
If you plan to use multiple 1784-KT cards, each one needs to be assigned a unique address.
1784-KT Card DIP Switch Configuration for DH+
MEMORY ADDRESS IN
HEX
SW1
SW2
SW3
SW4
SW5
SW6
Use these
addresses
only if you
do not have
an EGA or
VGA display
adapter
installed.
A0000
A4000
A8000
AC000
OPEN
CLOSED
OPEN
CLOSED
OPEN
OPEN
CLOSED
CLOSED
OPEN
OPEN
OPEN
OPEN
CLOSED
CLOSED
CLOSED
CLOSED
OPEN
OPEN
OPEN
OPEN
CLOSED
CLOSED
CLOSED
CLOSED
Use these
addresses
only if you
do not have
an MDA
display
adapter
installed.
B0000
B4000
B8000
OPEN
CLOSED
OPEN
OPEN
OPEN
CLOSED
CLOSED
CLOSED
CLOSED
CLOSED
CLOSED
CLOSED
OPEN
OPEN
OPEN
CLOSED
CLOSED
CLOSED
Use these
addresses
only if the D
xxxx
addresses
do not work,
as one of
the Cxxxx
addresses
C0000
C4000
C8000
CC000
OPEN
CLOSED
OPEN
CLOSED
OPEN
OPEN
CLOSED
CLOSED
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
CLOSED
CLOSED
CLOSED
CLOSED
CLOSED
CLOSED
CLOSED
CLOSED