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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
• 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
Table 3.2.1.1 Communication format received by Television
Start
Received byte #
1
2
Contents
Start
Of
Function
Commands
Character -Hex
STX
0~F
Code- Hex
02
*1
*1 Character Code: "0"-"9"
Note- See code conversion examples in section 4 for conversion details.
Table 3.2.1.2 Format of Commands Received by Television (12 bytes)
Form No.
Action
Reset
(a)
Write/Read
(b)
Read Data
(c)
Write Data
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.
Sent byte No.
Contents of the
command
Character (Hex)
Code (Hex)
*1 Character Code: Example "0"-"9"
st
3
4
5
6
st
nd
rd
1
2
3
Upper byte
R/W
(Function)
0~F
0~F
0~F
0~F
*1
*1
*1
*1
30-39, "A" - "F"
41-46
st
1
Command
(**)
Command
(**)
Command
(**)
Table 3.2.2 Answer format from television to PC
Communication
Normal/Error
1
Accepted or
Rejected
ACK/NAK
06/15
30-39 , "A" - "F"
th
to 6
as shown below. (Total 12 bytes)
st
and 2
7
8
9
10
11
th
th
4
5
Lower byte
Upper byte
(Function)
(Data)
0~F
0~F
0~F
0~F
0~F
*1
*1
*1
*1
*1
Command (12 byte)
nd
rd
th
2
3
4
Dummy
Dummy
Dummy
(00)
(00)
(00)
Operation
Command
Command
(**)
(**)
(**)
Operation
Command
Command
(**)
(**)
(**)
When requesting read data only from the TV
To the PC, the following format applies
1
2
3
Data
Start
Upper byte
STX
0~F
0~F
02
*1
41- 46
14
PLC1/AVC5-UB
nd
command byte.
Stop
12
13
14
6th
Stop
Lower byte
(Data)
ETX
0~F
0~F
*1
*1
03
th
th
5
6
Dummy
Dummy
(00)
(00)
Dummy
Dummy
(00)
(00)
Data
Data
(**)
(**)
4
5
6
Data
Stop
Lower byte
0~F
0~F
ETX
*1
03
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