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8-12
IQ plus 800/810 Installation Manual
REMOTE KEYBOARD
The alternate keyboard connector provides a means for connecting a remote
keyboard to the IQ plus 810 system. All inputs are active-low with pullups
to +5 V. Any of the front panel keyboard functions can be activated by
shorting the appropriate alternate keyboard input to ground with hard-
contact switches, or by achieving TTL logic-low levels. When a remote
keyboard is being used, the built-in keyboard is still functional and available
for use. Terminal connections (J5 on the expansion board) for a remote
keyboard are listed in Table 8-3.
Table 8-3.
Terminal connection (J5 on the expansion board) for the remote keyboard
J5-1 GROUND
J5-2 (spare)
J5-3 (spare)
J5-4 PRINT
J5-5 SETPOINT (Left)
J5-6 ZERO
J5-7 TARE
J5-8 DISP TARE (Up)
J5-9 GROUND
J5-10 GROUND
J5-11 3
J5-12 4
J5-13 6
J5-14 7
J5-15 9
J5-16 .(Decimal Point)
J5-17 ENTER
J5-18 GROUND
J5-19 nc
J5-20 GROUND
J5-21 (spare)
J5-22 CLEAR (Right)
J5-23 NEW ID
J5-24 SCALE #
J5-25 GROSS/NET
J5-26 UNITS
J5-27 1
J5-28 GROUND
J5-29 2
J5-30 DISP ACCUM
J5-31 5
J5-32 DISP RO
J5-33 8
J5-34 TIME/DATE (Down)
J5-35 0
J5-36 GROUND
J5-37 nc
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