Panasonic PT-LC75E manual Using the SERIAL connector, Control commands, Connection, Basic format

Using the SERIAL connector

The serial connector which is on the side connector panel of the projector conforms to the RS-232C interface specification, so that the projector can be controlled by a personal computer which is connected to this connector.

Control commands

The commands which the personal computer can use to control the projector are shown in the following table.

Command	Control	Remarks
	Contents

Connection

Computer

SERIAL(female)

D-Sub9p (male)

Communication cable

NOTE:

BUse a proper communication cable which is suitable for the personal computer to connect the serial connector and the personal computer.

Pin layout and signal names for SERIAL connector

6 9

Communications settings

Signal level	RS-232C
Sync. method	Asynchronous
Baud rate	9600 bps
Parity	None
Character length	8 bits
Stop bit	1 bit
X parameter	None
S parameter	None

Basic format

The data sent from the computer to the projector is transmitted in the format shown below.

STX Command : Parameter ETX

Start byte		1 byte	End byte
(02h)			bytes (03h)
	3 bytes	1 byte–5

		In standby mode, all commands other than
PON	Power ON	the PON command are ignored.
		BThe PON command is ignored during
		lamp ON control.
		BIf a PON command is received while the
		cooling fan is operating after the lamp
POF	Power OFF	has switched off, the lamp is not turned
		back on again straight away, in order to
		protect the lamp.
AVL	Volume	Parameter
		000–063(Adjustment value 0–63)
	Input signal	Parameter
IIS		VID=VIDEO	SVD=S-VIDEO
	selection
		RG1=RGB1(YPBPR1) RG2=RGB2(YPBPR2)
		Parameter
	Lamp ON	0 = Standby
Q$S		1 = Lamp ON control active
	condition query
		2 = Lamp ON
		3 = Lamp OFF control active

Operation

1 5

D-SUB 9-pin connector seen from outside

Pin	Signal	Contents
No.	name
#		NC
$	TXD	Transmitted data
%	RXD	Received data
&		Connected internally
'	GND
(		NC
)	CTS	Connected internally
*	RTS
+		NC

NOTE:

BThe projector can not receive the command for 10 seconds after the lamp is switched on. Wait 10 seconds before sending the command.

BIf sending multiple commands, check that a response has been received from the projector for one command before sending the next command.

BWhen a command which does not require parameters is sent, the colon (:) is not required.

BIf an incorrect command is sent from the personal computer, the “ER401” command will be sent from the projector to the personal computer.

Cable specifications

(When connected to a personal computer)

At the computer

At the projector			(DTE specifications)
	1	NC	NC	1
	2			2
	3			3
	4	NC	NC	4
	5			5
	6	NC	NC	6
	7			7
	8			8
	9	NC	NC	9

Advanced

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