Figure 5–2
LPT1 as a display or keypad port
XE–700
2010 Interface
LCD display
4x4 Keypad
Keypad
LPT1 also supports 4 x 4 matrix keypads. To interface the keypad to the XE–700
SBC, use the Octagon 2010 interface board. A CMA–26 cable is required to connect
the interface board to the XE–700 SBC. The program DISPLAY.EXE (found on the
Octagon Products CD ROM) provides an easy method to use the keypad. Refer to
the file DISPLAY.DOC on the Octagon Products CD ROM for information on
initializing and using the keypad. Also, refer to the
2010 product sheet
for
information on the interface board.
Installing a keypad
1. Connect a CMA–26 cable from the LPT1 port on the XE–700 SBC (J19) to J1 on
the 2010. See Figure 5–2.
2. Connect the keypad cable to the 10-pin header on the 2010.
3. Refer to the DISPLAY.DOC file for more information on reading the keypad.
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