Samsung HL-T6187S, Руководство по обслуживанию

Страница: 109 / 143

Operation Instruction & Installation
11-6 Samsung Electronics
11-2 New Features
11-2-1 RS-232C
Connect the DLP DTV using the serial port.
Serial Port Settings (Select Standard RS232)
DLP DTV Menu Configuration
Serial Communication Protocol
Command Packet Structure [7bytes]
Since Anynet, G-Link and RS232C share a serial port, you have to
select RS232C from the menu for the following communication.
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.)
Success
When the received packet from an external device has a valid
value, a Success packet is sent. Otherwise, a Fail packet is sent.
Menu Setting Procedures
Select Setup
Port Selection RS232C
Response Packet Structure [3 Bytes]
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.
Failure detection by an external device
An external device classifies the packet as Fail if it does not receive
a Success packet within 100ms.
Do not disconnect or connect the RS-232C cable
while the Computer or the DLP TV is operating.
It may cause serious damage to the Computer or
the DLP TV.
If the PC is not properly configured, the RS-232C
connection may not work properly. For further
details, refer to the Computer’s product
documentation.
0x03 0x0C 0xF1
Fail
0x03 0x0C 0xFF
Specification
Bit Rate
Data Bits
Parity
Stop Bits
Flow Control
RS-232C
115200 bps
8 bits
None
1 bit
None
0x08 0x22 Cmd1 Cmd2 Cmd3 Value CS
Communication Sequence
PC
Creates a command packet and sends it through RS232C.
DLP DTV
Receives a packet and parses the packet.
Determines whether it is a success or fail, and transmits the Ack packet to the PC.
Controls the DLP DTV with the parsed command.
PC
W aits for the Ack packet.
Prepares the next command, if a Success packet arrives immediately.