Specifications
RS-232C external control
By connecting a computer to the projector with a
For details, please consult the authorized dealer where you purchased your projector.
1.Communication Specifications
The communication specifications are as follows.
Baud rate | 9600bps/19200bps |
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Data length | 8 bits |
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Parity | None |
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Stop bit | 1 bit |
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Flow control | None |
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2.Command Format
When sending a control command to the projector, use the following data format.
Header
Header
ID
SP
CR
ID |
| SP |
| Command | [ | SP |
| Parameter | [ | CR |
:Designates the head of data and the data type.
:‘!’ (21h): Assigns command to the projector
:‘?’ (3Fh): Query to the projector (Asking command)
:‘1’: The identification number of the projector. (Manufacturer set value ‘1’)
:Designates the delimiter for ID, Command, and Parameter. (20h)
:Designates the terminal of the data. (0Dh)
* [ ] is not necessary for Asking command.
2-2 Response data format
Upon executing the received control command, the projector sends back the following response data to the computer.
Header |
| ID |
| SP |
| Normal Termination Status |
[
SP 
Parameter
[
CR
Header | : Designates the head of data. |
| : ‘@’ (40h): Fetches data from the projector. |
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ID | : ‘1’: The identification number of the projector. (Manufacturer set value”1”) |
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SP | : Designates the delimiter for ID, Command, and Parameter. (20h) |
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Normal Termination Status | : ‘0’ (30h) |
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CR | : Designates the terminal of the data. (0Dh) |
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2-3 Parameters used for the data format
The following three kinds of parameters are used for control commands and response data.
1)Numeric value
2)ON/OFF
3)Special parameters
Each parameter is as follows:
1) Numeric value
A
2) ON/OFF
Shows the status (ON/OFF) of the projector, such as POWER and HIDE.
Character | Hex. | Meaning |
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‘0’ | 30 | OFF |
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‘1’ | 31 | ON |
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