Panasonic PTL595U - LCD PROJECTOR Operating Instructions Manual - Page 37

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Using the serial connector

The serial connector which is on the side terminal board 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.

SERIAL

NOTE:

Use a proper communication cable which is suitable for the personal computer to connect the serial connector

and the personal computer.

Pin layout and signal names for SERIAL connector

Projector

D-SUB 9-pin connector

(male) seen from the

outside

Communication settings

Signal level

Synchronizing method

Baud rate

Parity

Character length

Stop bit

X parameter

S parameter

Basic format

Each packet which is sent from the computer starts with STX. Following this is the command itself and the

parameters for that command (if any), and the packet then ends with ETX. Add parameters when necessary

according to the control contents.

STX

C 1 C 2 C 3

Start byte

NOTE:

If sending multiple commands, check that a response has been received from the projector for one command

before sending the next command.

If an incorrect command is sent from the personal computer, the "ER401" command will be sent from the

projector to the personal computer.

D-SUB 9-pin

Communication cable

Determined by the RS-232C interface

Asynchronous

9600 bps

None

8 bits

1 bit

None

P 1 P 2 P 3 P 4 P 5

Colon (1 byte)

Command (3 bytes)

Pin No.

Signal name

RXD

TXD

GND

RTS

CTS

ETX

Parameter (1-5 bytes)

Computer

Contents

Received data

Transmitted data

GND

Connected internally