External Control

It is possible to control this unit by connecting it to a PC using an RS-232C cross cable (D-sub 9-pin).

The projector can be controlled by connecting it to a PC through the computer network with a LAN cable for control commands to be sent to the projector.

Æ“ Network ”（p. 59）

0Please use it after you have gained proper understanding from professional books or consulting the system administrator.

RS-232C Specifications

 

This Unit

 

Pin No.

Signal

Function

Signal Direction

1

 

5

 

2

RxD

Receive data

PC " This unit

 

 

 

6

9

 

3

TxD

Transmission data

This unit " PC

 

 

 

5

GND

Signal ground

—

 

 

 

1, 4, 6 - 9

N/C

—

—

0PC refers to the controller, such as a personal computer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mode

Non-synchronous

 

 

 

 

D0

D1

D2

D3

D4

D5

D6

 

D7

 

 

 

 

Character length

8 bit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parity

None

 

 

 

 

 

 

 

 

 

 

 

 

Stop

 

bit

Start bit

 

 

 

 

 

 

 

 

 

 

Start bit

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stop bit

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data rate

19200 bps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data format

Binary

TCP/IP Connection

Others

Before controlling via LAN, it is necessary to establish connection of the TCP layer by a “3-way handshake”, followed by sending out “PJREQ” and receiving “PJACK” within five seconds after the projector sends out “PJ_OK” for connection authentication.

If you are unable to complete sending within five seconds, or when “PJ_NG” or “PJNAK” is received, check the operating status of the projector, followed by performing the steps again starting from establishment of a TCP connection.

Within 5 Seconds

Projector

PJ_OKPJACK

Establishment of TCP Connection

TCP Port No. 20554

3-way Handshake

Projector Control

PJREQ

Controlling PC

Connection Authentication Procedure

.

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