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SmartPanel Projector Driver Application Note
Epson EMP-7800
© 2004 SP Controls Inc. 601 Minnesota Suite 115, San Francisco, CA 94107
help@spcontrols.com
II. CONTROL WIRING
PROJECTOR CONTROL
RS232 IR/SERIAL
RX
GND
CTS
RTS
TX
+12V
GND
IR/SER
SENSE
RS-232 to Epson Port
Control (RS-232C)
Emitter Bud to REAR
Epson IR Window
Female DB9
54321
987
6
1/8" Mini
Female
IR Emitter
(included with Panel)
This section specifies how RS-232 should be wired to the
Epson projector. Although this driver is RS-232-only, SP
Controls strongly recommends that you also wire IR in
case you make a decision to use Revision C of this driver,
which uses IR control. Please Section III below for more
information.
RS-232 should be connected to the Epson control port
labeled CONTROL (RS-232C). Connection should be as
follows:
1. Wire the Panel to a female DB9 as follows:
TX to 2
RX to 3
GND to 5
2. Connect this female DB9 to the projector port labeled
CONTROL (RS-232C).
The Infrared emitter (squirt) bud should be attached to the
rear IR window. IR control does not work effectively from
the front projector IR window.
Connection should be as follows:
1. Wire the Panel to a female 1/8" Mini as shown; wire
IR/SER to tip and GND to ring. Direct wiring to the IR
Emitter is not recommended as it makes removal of the
Panel for service more difficult.
2. Attach to any projector IR port using the Panel’s IR
Emitter (included with the Panel).
Note that the emitter glows red when IR is emitted so wiring
can be verified.
SPECIAL CONTROL NOTE 1:
The Epson EMP-7800 projector must be configured to
STANDBY MODE: NETWORK ON in the projector
onscreen menu ADVANCED1. If the projector STANDBY
MODE is not configured to NETWORK ON, it may stop
responding to RS-232 commands.
If the projector does stop responding to RS-232 control,
manually power down the Epson projector. Once the
projector cools down, unplug the projector from the outlet
and allow it 15 seconds to reset. Reapply power and the
projector should work normally.
Note: When the projector is placed in STANDBY MODE:
NETWORK ON the projector fan remains on in standby
mode. This is normal projector behavior.