Panasonic PT-D7500U manual Using the serial terminals, Examples of connection, Basic format

Using the serial terminals

The main unit is equipped with SERIAL terminals located in its terminal section on the side, and this terminal is compliant with RS-232C. Also a serial output terminal is provided to enable plural projector control.

Examples of connection

Single projector				Plural projectors
<Terminal section on projector side>			PC	<Terminal section on Projector 1> <Terminal section on Projector 2>
				D-Sub 9-pin	D-Sub 9-pin			D-Sub 9-pin	D-Sub 9-pin
D-Sub 9-pin (female)
				(female)		(male)		(female)	(male)
RS-232C (G)	RS-232C (G)	SERIAL		PC
RS-422 (R) IN	RS-422 (R) OUT
				RS-232C (G)	RS-232C (G)		SERIAL	RS-232C (G)	RS-232C (G)	SERIAL
				RS-422 (R) IN	RS-422	(R) OUT		RS-422 (R) IN	RS-422 (R) OUT
D-Sub 9-pin (male)
	Communication cable			D-Sub 9-pin		D-Sub 9-pin		D-Sub 9-pin
				(male)		(female)		(male)
				Communication cable			Communication cable

Pin assignments and signal names

D-Sub 9-pin (female), external appearance

Serial input terminal

Pin No. Signal name	Description
	NC
TXD	Send data
RXD	Receive data
	Connected internally
GND	Ground
	NC
CTS	Connected internally
RTS
	NC

D-Sub 9-pin (male), external appearance

Serial output terminal

Pin No. Signal name	Description
	NC
RXD	Receive data
TXD	Send data
	NC
GND	Ground
	NC
RTS	Connected internally
CTS
	NC

Communication conditions (Factory setting)

Signal level	RS-232C-compliant
Synchronization method	Start-stop synchronization
Baud rate	9 600bps
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

Start

A

D

I 1

I 2

;

C1

C2

C3

:

P1

P2

～�

Pn

Two ID characters

(2 bytes)

Semicolon

Colon

3 command

Parameter

ZZ, 1 to 64 and 0A to 0Z

characters (3 bytes)

(undefined length)

ID designate

ETX

End

Attention

Note

•No command can be sent or received for 10 to 60 seconds after the lamp starts lighting. Try sending any command after that period has elapsed.

•When sending several commands, be sure to wait for a response from the projector before sending the next command. When sending commands without parameters, a colon (:) is not necessary.

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

•Projector ID supported on the RS-232C interface is ZZ (ALL) and a group of 1 to 64 and 0A to 0Z.

•If a command is sent with a projector ID specified, the projector will return answer back only in the following cases:

If it coincides with the projector ID,

ID specification is ALL and VPS-SYSTEM is the master, or ID specification is group and Group is the master.

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