Using the serial terminals, Examples of connection – Panasonic PT-D4000U Manuel d'utilisation

Page 48

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Pin assignments and signal names

Communication conditions (Factory setting)

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.

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

PC

D-Sub 9-pin

(male)

Communication cable

D-Sub 9-pin

(male)

D-Sub 9-pin

(female)

Communication cable

<Terminal section on Projector 1> <Terminal section on Projector 2>

D-Sub 9-pin

(female)

D-Sub 9-pin

(female)

D-Sub 9-pin

(male)

D-Sub 9-pin

(male)

Using the serial terminals

Start

(1 byte)

ID designate

3 command
characters (3 bytes)

Parameter

(undefined length)

End

(1 byte)

2 ID

characters

(2 bytes) Semicolon

(1 byte)

Colon

(1 byte)

ZZ, 1 to 64 and 0A to 0Z

STX

C1

C2

C3

:

P1

P2

Pn

ETX

A D

I 1

I 2

;

(2 bytes)

• If a command is sent within about 60 seconds after the lamp is turned on, the response may be

returned late or the command may be unable to be executed. Try sending and receiving commands
after 60 seconds has elapsed.

• When sending several commands, be sure to wait for more than 0.5 seconds after receiving a

response from the projector, and then send the next command. When sending commands without
parameters, a colon (:) is not necessary.

Attention

• If a command cannot be executed, the projector will send an “ER401” response to the computer.
• If an invalid command is received, the projector will send an “ER402” response 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.

• In the hexadecimal format, STX has the character code 02 and ETX the character code 03.

Note

PC

D-Sub 9-pin (female)

<Terminal section on projector side>

D-Sub 9-pin (male)

Communication cable

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

Serial input terminal

Pin No. Signal name

TXD

RXD

GND

CTS
RTS

Description

NC

Send data

Receive data

Connected internally

Ground

NC

Connected internally

NC

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

Serial output terminal

Pin No. Signal name

RXD

TXD

GND

RTS
CTS

Description

NC

Receive data

Send data

NC

Ground

NC

Connected internally

NC

Signal level

Synchronization method

Baud rate

Parity

Character length

Stop bit

X parameter
S parameter

RS-232C compliant

Start-stop synchronization

9 600 bps

None
8 bits

1 bit

None
None

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