RS-232 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 | 9600 bps / 19200 bps |
Data Length | 8 bits |
Parity | None |
Stop Bit | 1 bit |
Flow Control | None |
2. Command Format
2-1 Command Data Format
When sending a control command to the projector, use the following data format.
Header
ID
SP
Command
[ SP
Parameter ]
CR
Header | : Designates the head of data and the data type. |
| : ! (21h): Assigns command to the projector. |
| : ? (3Fh): Query to the projector. (Asking command) |
ID | : 1: The identification number of the projector. (Manufacturer set value 1) |
SP | : Designates the delimiter for ID, Command, and Parameter. (20h) |
CR | : Designates the terminal of the data. (0Dh) |
* [ ] is not necessary for Asking command.
2-2 Response Data Format
When sending a control command to the projector, use the following data format.
Header
ID
SP
Normal Termination Status
[ SP
Parameter ]
CR
Header | : Designates the head of data. |
| : @ (40h): Fetches data from the projector. |
ID | : 1: The identification number of the projector. (Manufacturer set value 1) |
SP | : Designates the delimiter for ID, Command, and Parameter. (20h) |
Normal Termination Status : 0 (30h) | |
CR | : Designates the terminal of the data. (0Dh) |
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 MUTE.
Character | Hex. | Meaning |
0 | 30 | OFF |
1 | 31 | ON |
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