Panasonic PT-LB80 specifications Serial connector, Pin assignments and signal names, Basic format

S P E C F I L E

Portable LCD Projector

PT-LB80

Serial connector

The serial connector complies with RS-232C. To control the projector from a personal computer, com- mands must be input through communication software, based on the format and satisfying the commu- nication conditions shown below.

Pin assignments and signal names

69

1 5

D-sub HD 9-pin, female

No. Signal name		Description	No. Signal name		Signal name
1	–	NC	6	–	NC
2	TXD	Send data	7	CTS	Connected internally
3	RXD	Receive data	8	RTS	Connected internally
4	–	Connected internally	9	–	NC
5	GND	Ground

*Effective when connected to a PC having proper functions.

Communication conditions (factory setting)

Signal level	RS-232C-compliant
Synchronization method	Start-stop synchronization
Baud rate	9,600 bps
Parity	None
Character length	8	bits
Stop bit	1	bit
X parameter	None
S parameter	None

Basic format

Transmission from the computer begins with STX, then the ID, command, parameter, and ETX are sent in this order. Add parameters according to the details of control.

STX

C1 C2 C3

:

P1 P2 P3 P4

ETX

Start		Colon	Parameter	End
(1 byte)	Command (1 byte)		(1-4 bytes)	(1 byte)
	(3 bytes)

(Control and/or query commands)

CAUTION

It may not be possible to send or receive commands for about 10 to 60 seconds when the lamp is first turned on. If this occurs, wait for 60 seconds, then try sending or receiving again. When sending multiple commands, be sure to wait for at least 0.5 second after receiving a response from the projector before sending the next command. Additional time is sometimes required for response due to processing inside the projector. Set the time-out period for command response to 10 seconds or more.

NOTE:

If a wrong command is received, the projector will send an ER401 command to the computer.

When sending commands without parameters, a colon (:) is not necessary.

Cable specifications

Projector PC (DTE)

1	NC	NC	1
2			2
3			3
4	NC	NC	4
5			5
6	DSR	NC	6
7			7
8			8
9	NC	NC	9

As of October 2008 < 6 >