Mitsubishi Electronics HC5500 manual Interface, Control command diagram, Connection

LCD Projector

HC5500

Controlling the projector using a personal computer

This projector can be controlled by connecting a personal computer with RS-232C terminal.

PC-controllable functions:

•Turning the power ON or OFF

•Changing input signals

•Inputting commands by pressing the buttons on the control panel and remote control

•Menu setting

Connection

RS-232C cable SERIAL

To RS-232C terminal

D-SUB 9-pin D-SUB 9-pin

	HDMI IN-1	HDMI IN-2
PB/	COMPUTER IN/	SERIAL	TRIGGER
	COMPONENT
CB
	VIDEO IN
VIDEO IN
PR/
CR
S-VIDEO
IN
COMPONENT
VIDEO IN

AC IN

Important:

•Make sure that your computer and projector are turned off before connection.

•Boot up the computer first, and then plug the power cord of the projector. (If you do not follow this instruction, the Com port may not function.)

•Adapters may be necessary depending on the PC connected to this projector. Contact your dealer for details.

1) Interface

PROTOCOL	RS-232C
BAUD RATE	9600 [bps]
DATA LENGTH	8 [bits]
PARITY BIT	NONE
STOP BIT	1 [bit]
FLOW CONTROL	NONE

This projector uses RXD, TXD and GND lines for RS-232C control.

For RS-232C cable, the reverse type cable should be used.

2) Control command diagram

The command consists of the address code, function code, data code, and end code. The length of the command varies among the functions.

	Address code		Function code		Data code	End code
HEX	30h 30h		Function		Data	0Dh
ASCII	‘0’ ‘0’		Function		Data
[Address code]		30h 30h (In ASCII code, ‘0’ ‘0’) fixed.
[Function code]		A code of each fixed control move.
[Data code]		A code of each fixed control data (number) and not always indicated.
[End code]		0Dh (In ASCII code, ‘		’) fixed.

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