Power:
In applications where the KE24 is attached to the computer’s
keyboard input, the KE24 gets its power from the computer. If
used in other modes, an external 5V power supply is required.
See Appendix B for information on connecting an external 5V
supply.
Supported Computers:
The KE24 may be used with PCXT, AT, PS/2, 286, 386, 486,
Pentium, and compatibles.
Hardware Required:
For programming the KE24 configuration
only
. A serial port
(COM1 through COM6) on your PC, and a DB9 serial cable
(Male to Female).
Default Settings:
4
PC Type:
AT
Serial Port:
Disabled
I/O Header:
Configured as 24 Discrete Inputs.
(Connect the input to ground to ac-
tivate it. Codes directed to the PC
keyboard input. Pin “A” emulates
the “A” key, input “B” emulates the
“B” key, etc.)
External Keyboard:
Directed to the PC keyboard input.
Appendix C:
Placing KE24 in PROGRAM Mode
This section does not apply if the KE24 is set up to be programmed
through the keyboard port. In most other KE24 configurations, a
straight through 9 Pin Male/Female cable is required between the KE24
serial port and the Computer serial port (COM1 through COM6). If
your KE24 setup runs the serial port at a Baud rate other than 9600
you must use the following sequence with the programming jumper:
Note:
In the program mode, the KE24 passes information from
the external keyboard to the computer. While in this mode, the
KE24 will only work with AT or PS/2 and compatible computers.
27
Note:
The program-
ming jumper is only
needed
in
certain
situations as decribed
above. When using
the jumper, the KE24
must be powered up
with this programming
jumper in place to en-
ter the program mode.
When
programming
the KE24, the user nor-
mally connects the se-
rial cable as described
above, and uses the
KE24Load
program
that comes with the unit
to set up the KE24 with
no jumper required.
Programming
Jumper
1. With power off, place the
enclosed jumper from
Pin X on the I/O header
to the ground pin next to
it (see diagram).
2. Plug the KE-MM6-mini
connecting cable from
the KE24 connector
marked “To PC” to your
computer’s
keyboard
input.
3. Connect your own key-
board to the KE24 con-
nector marked “KBD.”
4. Attach a 9 pin D type
(male to female) cable
from your KE24 RS-232
port to a serial port on
your computer (COM1
through COM6) .
5. Turn on the PC. The KE24
will now be in PRO-
GRAM mode, and will
communicate with the
KE24Load configuration
program.