Communication protocol, Data structure – LG LOBG650 User Manual
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SERIAL COMMUNICATION FUNCTION
Communication
Protocol
1. Transmission
[Command1] [Command2] [ ] [Set ID] [ ] [Data]
[Cr]
* [Command1]: The first command to control the projector
(k. j, x, m, n ASCII code, 1 Character)
* [Command2]: The second command to control the
projector (ASCII code, 1 character)
* [Set ID]: You can adjust the set ID to choose desired
monitor ID number in option menu. Adjustment
range is 1 to 99. When selecting Set ID ‘0’,
every connected set is controlled.
Set ID is indicated as decimal (1 to 99) on menu
and as Hexa decimal (0x0to 0x63) on
transmission/receiving protocol.
* [Data]: To transmit command data (hexadecimal).
Transmit ‘FF’ data to read status of command.
* If the data is ‘FF’, it means data read mode.
* [Cr]: Carriage Return
It corresponds to ASCII code ‘0x0D’.
*[ ] : ASCII code ‘space (0x20)
Communication Parameter Setup
•
Baud Rate: 9600 bps (UART)
•
Data Length: 8 bit
•
Parity: none
•
Stop bit: 1 bit
•
Flow Control: none
•
Communication code: ASCII code
2. OK Acknowledgement
[Command2] [ ] [Set ID] [ ] [OK] [Data] [x]
* The set transmits ACK (acknowledgement) based
on this format when receiving normal data. At this
time, if the data is data read mode, it indicates
present status data. If the data is data write mode,
it returns the data of the PC computer.
3. Error Acknowledgement
[Command2] [ ] [Set ID] [ ] [NG] [Data] [x]
* If a set receives an abnormal piece of data such as
a non-supported function or there is a
communication error, it returns ACK in the above
format.
Data [00]: illegal code
(This command is not supported.)
Data Structure
10
16
10
16
10
16
10
16
10
16
10
16
10
16
10
16
10
16
11 0B 21 15 31 1F 41 29 51 33 61 3D 71 47 81 51 91 5B
12 0C 22 16 32 20 42 2A 52 34 62 3E 72 48 82 52 92 5C
13 0D 23 17 33 21 43 2B 53 35 63 3F 73 49 83 53 93 5D
14 0E 24 18 34 22 44 2C 54 36 64 40 74 4A 84 54 94 5E
15 0F 25 19 35 23 45 2D 55 37 65 41 75 4B 85 55 95 5F
16 10 26 1A 36 24 46 2E 56 38 66 42 76 4C 86 56 96 60
17 11 27 1B 37 25 47 2F 57 39 67 43 77 4D 87 57 97 61
18 12 28 1C 38 26 48 30 58 3A 68 44 78 4E 88 58 98 62
19 13 29 1D 39 27 49 31 59 3B 69 45 79 4F 89 59 99 63
20 14 30 1E 40 28 50 32 60 3C 70 46 80 50 90 5A 100 64
10
16
0
00
1
01
2
02
3
03
4
04
5
05
6
06
7
07
8
08
9
09
10 0A