Panasonic PT-L785U Using the SERIAL connector, Connection, Basic format, Communications settings, TXD, ETX, 232C, None, None, None, 1 bit, Parity, 8 bits, Command, Stop bit

Using the SERIAL connectorThe serial connector which is on the 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.

Connection

Computer

SERIAL(female)

D-sub 9-pin (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 assignments and signal names

		6	9
		1	5
		D-sub 9-pin
		Appearance
Pin	Signal		Contents
No.	name
#		NC
$	TXD	Transmitted data
%	RXD	Received data
&		NC
'	GND	Ground
(	DSR
)	CTS	Connected internally
*	RTS
+		NC

Communications settings

Signal level	RS-	232C
Sync. method		Asynchronous
Baud rate		9 600 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)		3 bytes		1 byte-5 bytes			(03h)

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.

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