Panasonic PT-DS20KU ユーザーズマニュアル

▶

■Basic format

Transmission from the computer starts with STX, then the ID, command, parameter, and ETX are sent in this 

order. Add parameters according to the details of control.

(2 bytes)

2 ID characters (2 bytes)

Semicolon (1 byte)

Colon

*1 

1 byte㧕

3 command 

characters (3 bytes)

Parameter 

(undefined length)

End

(1 byte)

Start

(1 byte)

ID designate

ZZ, 01 to 64 and 0A to 0Z

*1:  When transmitting a command which does not need a parameter, a colon (:) is not necessary.

▶

■Basic format (with subcommands)

Parameter (6 bytes)

*1

Symbol “+” or “-” (1 byte) and setting 

or adjustment value (5 bytes)

Operation (1 byte)

*1

“=” (Set the value specified using parameter)

Sub command 

(5 bytes)

Same as the basic format

*1:  When transmitting a command which does not need a parameter, the operation (E ) and parameter are not necessary.

 

z

If a command is transmitted after the lamp starts illuminating, there may be a delay in response or the 

command may not be executed. Try sending or receiving any command after 60 seconds.

 

z

When transmitting multiple commands, be sure to wait until 0.5 seconds has elapsed after receiving the 

response from the projector before sending the next command.

 

z

If a command cannot be executed, a “ER401” response is sent from the projector to the computer.

 

z

If an invalid parameter is sent, a “ER402” response is sent from the projector to the computer.

 

z

ID transmission in RS-232C supports ZZ (ALL) and 01 to 64, as well as 0A to 0Z groups.

 

z

If a command is sent with a specified ID, a response will be sent to the computer only in the following cases.

–▶It matches the projector ID

–▶ID setting is set to ALL and [RESPONSE(ID ALL)] is [ON]

–▶ID setting is set to GROUP and [RESPONSE(ID GROUP)] is [ON]

 

z

STX and ETX are character codes. STX shown in hexadecimal is 02, and ETX shown in hexadecimal is 03.