Rs-232C External Control - JVC DLA-G150CLU Operating Instructions Manual

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:
Baud rate 9600bps / 19200bps*
Data length 8 bits
Parity None
Stop bit 1 bit
Flow control None
* Factory set value. To change the value, refer to "Setting and Adjusting Other Functions (OPTIONS)" on page 54.
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 ID SP Command SP Parameter
Header: Designates the head of data and the kind of data.
"!" (21h): Control command to the projector
"?" (3Fh): 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 ID SP Normal Termination Status
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)
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CR
SP Parameter CR
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.
Character Hex. Meaning
"0" 30 OFF
"1" 31 ON
(3) Special parameters
Input switching parameters:
Character Hex. Meaning
"0" 30 Y/C
"1" 31 VIDEO
"2" 32 COMP
"3" 33 PC1
"4" 34 PC2
"5" 35 DVI
Operation mode parameters:
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
3. Control command table
The control commands that can be sent from the computer are as follows:
Asking
Function Command
Power ON ELSE
OPERATE U0F – –
HIDE U00 –
Right Left rev. U17 –
Top Bottom inv. U18 –
Keystone U40 –
Input U1A
–
Operation mode Z03
* Keystone: Numeric value can range from "FF80" to "0080"
* Operation mode: Only Asking command is possible
RS-232C external control
Kind of data
Numeric Value ON/OFF Special Data
– –
– –
– –
– –
– –
Y/C, VIDEO, PC1, PC2,
– –
COMP, DVI
Stand-by, Power-on,
– –
Cool-down, Warning
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