Hitachi PJ-TX300 SPECIFICATIONS

PJ-TX300(C11H2)

67

89

123

4

5

6

789

1 2 3 4 5

CONTROL port

RS-232C

cable(Cross)

RS-232C port

of the projector of a computer

- (1) (1) CD
RD (2) (2) RD
TD (3) (3) TD

- (4) (4) DTR
GND (5) (5) GND

- (6) (6) DSR
RTS (7) (7) RTS
CTS (8) (8) DTS

- (9) (9) RI

10. RS-232C communication

Connecting the cable

(1) Turn off the projector and the computer power supplies.

(2) Connect the CONTROL port of the projector with a RS-232C port of the computer by a RS-232C

cable(Cross). Use the cable that fulfills the specification shown in the previous page.

(3) Turn on the computer power supply and after the computer has started up, turn on the projector power

supply.

Communications setting

19200 bps, 8N1

1. Protocol

Consist of header (7 bytes) + Command data (6 bytes)

2. Header

BE + EF + 03 + 06 + 00 + CRC_low + CRC_high

CRC_low: Lower byte of CRC flag for command data

CRC_high: Upper byte of CRC flag for command data

3. Command Data

Command Data Chart

byte_0 byte_1 byte_2 byte_3 byte_4 byte_5

Action Type Setting code

low high low high low high

Action (byte_0 - 1)

Action Classification Content

1 Set Change setting to desired value.

2 Get Read projector internal setup value.

4 Increment Increment setup value by 1.

5 Decrement Decrement setup value by 1.

6 Execute Run a command.

41

PJ-TX300(C11H2)

Requesting projector status (Get command)

(1) Send the request code Header + Command data (‘02H’+‘00H’+ type (2 bytes)+ ‘00H’+‘00H’) from the

computer to the projector.

(2) The projector returns the response code ‘1DH’+ data (2 bytes) to the computer.

Changing the projector settings (Set command)

(1) Send the setting code Header + Command data (‘01H’+‘00H’+ type (2 bytes) + setting code (2 bytes))

from the computer to the projector.

(2) The projector changes the setting based on the above setting code.

(3) The projector returns the response code ‘06H’ to the computer.

Using the projector default settings (Reset Command)

(1) The computer sends the default setting code Header + Command data (‘06H’+ ‘00H’+ type (2 bytes) +

‘00H’+‘00H’) to the projector.

(2) The projector changes the specified setting to the default value.

(3) The projector returns the response code ‘06H’ to the computer.

Increasing the projector setting value (Increment command)

(1) The computer sends the increment code Header + Command data (‘04H’+ ‘00H’+ type (2 bytes) +‘00H’+

‘00H’) to the projector.

(2) The projector in creases the setting value on the above setting code.

(3) The projector returns the response code ‘06H’ to the computer.

Decreasing the projector setting value (Decrement command)

(1) The computer sends the decrement code Header + Command data (‘05H’+ ‘00H’+ type (2 bytes) +‘00H’ +

‘00H’) to the projector.

(2) The projector decreases the setting value on the above setting code.

(3) The projector returns the response code ‘06H’ to the computer.

When the projector cannot understand the received command

When the projector cannot understand the received command, the error code ‘15H’ is sent back to the com-

puter.

Sometimes the projector cannot properly receive the command. In such a case, the command is not exe-

cuted and the error code ‘15H’ is sent back to the computer. If this error code is returned, send the same

command again.

When the projector cannot execute the received command.

When the projector cannot execute the received command, the error code ‘1cH’ + ‘xxxxH’ is sent back to the

computer. When the data length is greater than indicated by the data length code, the projector ignore the

excess data code.

Conversely when the data length is shorter than indicated by the data length code, an error code will be

returned to the computer.

NOTE • Operation cannot be guaranteed when the projector receives an undened command or data.

• Provide an interval of at least 40ms between the response code and any other code.

•

The projector outputs test data when the power supply is switched ON, and when the lamp is lit. Ignore this data.

• Commands are not accepted during warm-up.

42

Command data chart

PJ-TX300(C11H2)

Names  Operation Type Header

Power Set Turn off BE  EF 03 06  00 2A  D3 01  00 00  60 00  00

Turn on BE  EF

Get BE  EF 03 06  00 19  D3 02  00 00  60 00  00

(Example return)
  00  00  01  00  02  00
  (Off)  (On)  (Cool down)

Input Source

Error Status

BRIGHTNESS Get BE  EF 03 06  00 89  D2 02  00 03  20 00 00

BRIGHTNESS Reset

CONTRAST Get BE  EF 03 06  00 FD  D3 02  00 04  20 00  00

CONTRAST Reset

MODE Set NORMAL BE  EF 03 06  00 23  F6 01  00 BA  30 00 00

GAMMA Set STANDARD BE  EF 03 06  00 07 E9 01  00 A1  30 20 00

GAMMA REFERENCE 

SELECT

Set HDMI BE  EF 03 06  00 0E  D2 01  00 00  20 03  00

COMPUTER BE  EF 03 06  00 FE  D2 01  00 00  20 00  00

VIDEO BE  EF 03 06  00 6E  D3 01  00 00  20 01  00

S-VIDEO BE  EF 03 06  00 9E  D3 01  00 00  20 02  00

COMPONENT BE  EF 03 06  00 AE  D1 01  00 00  20 05  00

Get BE  EF 03 06  00 CD  D2 02  00 00  20 00  00
Get BE  EF 03 06  00 D9  D8 02  00 20  60 00  00

(Example return)
  00  00  01  00  02  00  03  00
  (Normal)  (Cover error)  (Fan error)  (Lamp error)
  04  00  05  00  07  00  08  00

 (Temperror) (Airowerror) (Coolerror) (Filtererror)

Increment BE  EF 03 06  00 EF  D2 04  00 03  20 00  00

Decrement BE  EF 03 06  00 3E  D3 05  00  03  20 00  00

Execute BE  EF 03 06  00 58  D3 06  00 00  70 00  00

Increment BE  EF 03 06  00 9B  D3 04  00 04  20 00  00

Decrement BE  EF 03 06  00 4A  D2 05  00 04  20 00  00

Execute BE  EF 03 06  00 A4  D2 06  00 01  70 00  00

CINEMA LOW BE  EF

MUSIC BE  EF 03 06  00 43  F7 01  00 BA  30 02 00

SPORTS BE  EF 03 06  00 D3  F6 01  00 BA  30 03 00

CINEMA HIGH BE  EF

Get BE  EF 03 06  00 10  F6 02  00 BA  30 00 00

(Example return)
  00  00  01  00  02  00  03  00  04  00  10  00
  (Normal)  (Cinema Low)  (Music)  (Sports)  (Cinema High)  (Custom)

LOW BE  EF 03 06  00 97 E8 01  00 A1  30 21  00

HIGH BE  EF 03 06  00 67 E8  01  00 A1  30 22  00

Hi-CONTRAST BE  EF 03 06  00 F7 E9 01  00 A1  30 23  00

CUSTOM+1 BE  EF 03 06  00 07 FD 01  00 A1  30 10  00

CUSTOM-2 BE  EF 03 06  00 97 FC 01  00 A1  30 11  00
CUSTOM-3 BE  EF 03 06  00 67 FC 01  00 A1  30 12  00
CUSTOM-4 BE  EF 03 06  00 F7 FD  01  00 A1  30 13  00

Get BE  EF 03 06 00 F4 F0 02  00 A1  30 00  00

Set STANDARD BE  EF 03 06  00 43 E9 01  00 A2  30 20  00

LOW BE  EF 03 06  00 D3 E8  01  00 A2  30 21  00

HIGH BE  EF 03 06  00 23 E8  01  00 A2  30 22  00

Hi-CONTRAST BE  EF 03 06  00 B3 E9 01  00 A2  30 23  00

Get BE  EF 03 06  00 B0 F0 02  00 A2  30 00  00

03 06  00 BA  D2 01  00 00  60 01  00

03 06  00 B3  F7 01  00 BA  30 01 00

03 06  00 E3  F4  01  00 BA  30 04 00

CRC Action Type Setting Code

Command Data

43