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SmartSet Technical Reference Manual—Addendum for the E281-2310 Controller
If the controller will be external to the display, the touchscreen cable should be
terminated at the back of the display with a DB9 male connector. Use Elo's
IC1 adapter cable (P/N 012226). Then connect a cable from the DB9 male
connector to the controller using Elo's cable P/N 002863-6-2 with the Elo
002861-2-12 adapter. Unlike the serial cable, the touchscreen cables have a
special construction. Use only Elo Touchscreen cables and adapters.
Figure 4. P3 Touchscreen Connector Pin Positions, End View
Diagnostic LEDs
The E281-2310 controller has one green diagnostic LED. Following power on, the
controller performs a short self-test, where the LED stays lit. After the self-test,
the LED flashes once per second, indicating normal operation. The self-test results
are displayed by most Elo driver software.
During normal operation, the LED also indicates controller/host communication is
in progress. When the touchscreen is touched, the LED should light continuously,
then return to the normal flash rate. If the host does not remove the packet from
the controller, the LED will stay lit.
The LED will also stay lit without a touch if the touchscreen or cabling is
disconnected or not functioning.
If the LED flashes about two times per second, a warning error condition is
indicated, such as improper communication from the host. Suspect an invalid
command sequence from the host.
Remote LED Capability
The microprocessor pin that drives the status LED is connected to pin 5 of the P4
power supply connector. This signal from the microprocessor may also be used to
drive an external indicator such as another LED.
To operate an external LED, connect the LED anode to a +5 Vdc power supply
and the cathode to pin 5 of the P4 connector. (Nominal current through the LED
will be 3 mA—the LED will be comparatively dim.)
2
4
6
8 10 12
X
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·
·
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·
·
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1
3
5
7
9 11
X
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5
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