Hitachi 51F510 DP43, Руководство по обслуживанию

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DP43
3.2- Command Summary (Sending and Receiving Data)
3.2.1- Data received by Television
•
TV will accept data from the PC when it is properly formatted as shown in table 3.2.1.1 only
when the Terminal Mode is ON.
•
The command length is 12 bytes with a start and stop byte. Therefore total command strings
are 14 bytes
•
The command consists of 6 Hex codes from 1
st
to 6
th
as shown below. (Total 12 bytes)
•
All command strings should be described in character code and then converted to Hex Code.
•
Table 3.2.1.2 shows the 3 types of command formats
•
All commands are classified into these 3 types of command by the 1
st
and 2
nd
command byte.
Table 3.2.1.1 Communication format received by Television
*1 Character Code: "0"-"9"
R
30-39, "A" - "F"
R
41-46
Note- See code conversion examples in section 4 for conversion details.
Table 3.2.1.2 Format of Commands Received by Television (12 bytes)
3.2.2 Format of commands sent from television to PC
•
Upon completion of a command sent to the television as shown in table 3.2.1.2, The
television will respond with an answer as shown in table 3.2.2.
•
In the event that a command is rejected by the television, an Hex 15 will be sent to the PC.
Table 3.2.2 Answer format from television to PC
*1 Character Code: Example "0"-"9"
R
30-39 , "A" - "F"
R
41- 46
Start Stop
Received byte # 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Contents Start 1
st
2
nd
3
rd
4
th
5
th
6th Stop
Of Function R/W Upper byte Lower byte Upper byte Lower byte
Commands
(Function) (Function) (Data) (Data)
Character -Hex
STX
0~F 0~F 0~F 0~F 0~F 0~F 0~F 0~F 0~F 0~F 0~F 0~F
ETX
Code- Hex
02
*1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 03
Command (12 byte)
Form No. Action
1
st
2
nd
3
rd
4
th
5
th
6
th
Command Dummy Dummy Dummy Dummy Dummy
(a)
Reset
Write/Read
(**) (00) (00) (00) (00) (00)
Command Operation Command Command Dummy Dummy
(b) Read Data
(**) (**) (**) (**) (00) (00)
Command Operation Command Command Data Data
(c) Write Data
(**) (**) (**) (**) (**) (**)
Communication
Normal/Error
When requesting read data only from the TV
To the PC, the following format applies
Sent byte No. 1 1 2 3 4 5 6
Contents of the
command
Accepted or
Rejected
Start
Data
Upper byte
Data
Lower byte
Stop
Character (Hex) ACK/NAK STX 0~F 0~F 0~F 0~F ETX
Code (Hex) 06/15 02 *1 *1 03