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No.517811-38
DLA-M2000LU
DLA-M2000LE
70
RS-232C external control
By connecting a computer to the RS-232C terminal, you can control the projector. Use a reverse connection cable as the RS-
232C connection cable.
The commands to control the projector and the response data against the received commands are explained here.
For further information, please consult the dealer where you purchased your projector or consult the Service Center.
1. Communication Specifications
The communication specifications are as follows:
* Factory set value. To change the value, refer to “Setting and Adjusting Other Functions (OPTIONS)” on page 52.
2. Command Format
2-1. Command data format (from the computer to the projector)
When sending a control command, use the following data format.
Header: Designates the head of data and the kind of data.
“!” (21h): Control command to the projector
“?” (2Fh): Query to the projector (Asking command)
ID: “1” (fixed)
SP: Designates the delimiter for ID, Command, and Parameter. (20h)
CR: Designates the terminal of the data. (0Dh)
* [ ] is not necessary when Asking command.
2-2. Response data format (from the projector to the computer)
Upon executing the received control command, the projector sends back the following response data to the computer.
Header: Designates the head of data.
“@” (40h): Fetches data from the projector.
ID: “1” (fixed)
SP: Designates the delimiter for ID, Command, and Parameter (20h)
Normal Termination Status: “0” (30h)
CR: Designates the terminal of the data (0Dh)
Baud rate 9600bps / 19200bps*
Data length 8 bits
Parity None
Stop bit 1 bit
Flow control None
Header ID SP Command SP Parameter CR
Header ID SP Normal Termination Status SP Parameter CR
[]
71
RS-232C external control
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2-3 Parameters used for the data format
The following three kinds of parameters are prepared for the control command and response data.
(1) Numeric value
Designates the 2-byte hexadecimal value with the sign as the 4-digit (byte) characters.
Designation allowable range: “8000” to “7FFF”
(2) ON/OFF
Designates the status (ON/OFF) of the projector, such as POWER and HIDE.
(3) Special parameters
Input switching parameters:
Operation mode parameters:
3. Control command table
The control commands that can be sent from the computer are as follows:
* Keystone: Numeric value can range from “FF80” to “0080”
* Operation mode: Only Asking command is possible
Character Hex. Meaning
“0” 30 OFF
“1” 31 ON
Character Hex. Meaning
“0” 30 Y/C
“1” 31 VIDEO
“2” 32 PC1
“3” 33 PC2
Character Hex. Meaning
“0000” 30h, 30h, 30h, 30h Stand-by mode
“0001” 30h, 30h, 30h, 31h Power-on mode
“0002” 30h, 30h, 30h, 32h Cool-down mode
“0004” 30h, 30h, 30h, 34h Warning mode
Function Command
Asking Kind of data
Power ON ELSE Numeric Value ON/OFF Special Data
OPERATE U0F –– – ✓ –
HIDE U00 ✓ –– ✓ –
Right Left rev. U17 ✓ –– ✓ –
Top Bottom inv. U18 ✓ –– ✓ –
Keystone U40 ✓ – ✓ ––
Input U1A ✓ –– –Y/C, VIDEO, PC1, PC2
Operation mode Z03 ✓✓ ––
Stand-by, Power-on,
Cool-down, Warning