Samsung A600B SPA600BX 사용자 설명서
제품 코드
SPA600BX
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5-2
5-2
RS-232C Command Table
Communication Format (Complies with the RS232C Standard)
•
Baud rate : 9,600 bps
•
parity : None
•
Data bits : 8, stop bit : 1
•
Flow Control : None
Serial Communication Protocol
1.
Command Packet Structure [7bytes]
•
A command packet consists of 7 bytes in total.
•
The two bytes 0x08 and 0x22 signify that the packet is for serial communication.
•
The following 4 bytes represent a pre-defined command that can be defined by the user.
•
The last byte is the checksum which checks the validity of the current packet.
•
Header [2 Byte]: Pre-defined values fixed to 0x08 and 0x22.
•
Cmd1 [1 Byte]: The first value of the code defined in the command list (Hexadecimal)
•
Cmd2 [1 Byte]: The second value of the code defined in the command list (Hexadecimal)
•
Cmd3 [1 Byte]: The third value of the code defined in the command list (Hexadecimal)
•
Value [1 Byte]: Input parameter for the command (Default: 0) (Hexadecimal)
•
CS [1 Byte]: Checksum (the 2’s complement of the sum of all the values except for the CS value.)
2.
Response Packet Structure [3 Bytes]
1.
Success
2.
Fail
•
When the received packet from an external device has a valid value, a Success packet is sent. Otherwise, a Fail
packet is sent.
packet is sent.
•
A Fail packet is sent if:
•The received packet length is not equal to 7 bytes.
•The 2 byte packet header value is not equal to 0x08, 0x22.
•The check sum is incorrect.
•The 2 byte packet header value is not equal to 0x08, 0x22.
•The check sum is incorrect.
•
Failure detection by an external device
•An external device classifies the packet as Fail if it does not receive a Success packet within 100ms.
•
Transmit the following control command to transmit one or more control commands if there was a successful response
for the previous transmission or there was no response in over 3 seconds.
for the previous transmission or there was no response in over 3 seconds.
•
While controlling the Projector using a Computer, you cannot check the Projector
’ s status change using the Computer nor will it
be displayed on the Projector's screen. Transmit the INFORMATION command to display the current information on the
Projector's screen.
Projector's screen.
•
All the control commands apply to the input source and the Projector's status currently displayed.
0x08
0x22
cmd1
cmd2
cmd3
value
CS
0x03
0x0C
0xF1
0x03
0x0C
0xFF