Panasonic PT-LB90U Technical Information Serial terminal, JJConnection, JJCommunication settings

Technical Information

Serial terminal

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

JJConnection

Computer

D-Sub 9-pin (male)

Serial terminal (female)

JJPin assignments and signal names

Pin No.	Signal name	Contents
		NC
	TXD	Transmitted data
	RXD	Received data
		NC
	GND	Earth
	RTS	NC
		Connected internally
	CTS
		NC

JJCommunication settings

Signal level	RS-232C	Character length	8 bits
Sync.method	Asynchronous	Stop bit	1 bit
Baud rate	9 600 bps	X parameter	None
Parity	None	S parameter	None

Basic format
JJ
	STX	Command		:	Parameter	ETX	The data streaming from the computer will start with
							STX, and proceed to Command, Parameter and end
Start byte			1 byte			End
							with ETX.
	(02 h)					(03 h)
							You can add the required parameter.
		3 bytes			1 byte - 4 bytes

Note

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

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

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

Remarks
zzIf an incorrect command is sent from the personal computer, the ER401 command will be sent from the	Appendix
projector to the personal computer.

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