4. Communication Format
Header
Message
Check Code
Delimiter
The command packet consists of four parts, Header, Message, Check code and Delimiter.
Sequence of a typical procedure to control a monitor is as follows,
[A controller and a monitor,
Controller
Get Parameter
Delimiter | Check Code | Message | Header |
Get Parameter Reply
Header | Message | Check Code |
Set Parameter 
Delimiter | Check Code | Message | Header |
Set Parameter Reply
Header | Message | Check Code |
Monitor
| The controller sends command to | |
| get a value from the monitor that | |
| you want to change. | |
Delimiter | The monitor replies a current value | |
| of the requested item. | |
| The controller sends commands to | |
| set an adjusted value. | |
Delimiter | The monitor replies to the | |
controller for confirmation. | ||
|
Get Parameter 
Delimiter | Check Code | Message | Header |
Get Parameter Reply
Header | Message | Check Code | Delimiter |
Save Current Setting Command 
Delimiter | Check Code | Message | Header |
The controller sends command to get a value for confirmation.
The monitor replies an adjusted value.
The controller requests to store the adjusted value to the monitor.
Save Current Setting Command Reply
Header |
| Message |
| Check Code |
| Delimiter | The monitor replies to the |
|
|
| |||||
|
|
| controller for confirmation. |
Command
Delimiter | Check Code | Message | Header |
Command Reply
Header | Message | Check Code |
The control does not suitable for above fixed protocol; use the proper command for each control. Please refer section 5.5 and section 7 to 13.
Delimiter The monitor replies a proper message defined for each control.
4.1 Header block format (fixed length)
Header
Message
Check code
Delimiter
SOH | Reserved | Destination | Source | Message | Message |
'0' | Type | Length | |||
1st | 2nd | 3rd | 4th | 5th | 6th |
1stbyte) SOH: Start of Header
ASCII SOH (01h)
(2/50)
