Samsung PE40C Manual page 51

1
Preparations
Ack

Header
0xAA
"Screen Mode": A code that sets the product status
Nak

Header
0xAA
"ERR": A code showing what error has occurred
Screen size control
Function

The screen size of a product can be changed using a PC.
Viewing the screen size (Get Screen Size Status)

Header
0xAA
Ack

Header
0xAA
"Screen Size": product screen size (range: 0 – 255, unit: inch)
Nak

Header
0xAA
"ERR": A code showing what error has occurred
Command Data length
ID
0xFF
Command Data length
ID
0xFF
Command
ID
0x19
Command Data length
ID
0xFF
Command Data length
ID
0xFF
Ack/Nak r-CMD
3 'A'
Ack/Nak r-CMD
3 'N'
Data length
Checksum
0
Ack/Nak r-CMD
3 'A'
Ack/Nak r-CMD
3 'N'
Val1
Checksum
"Screen
0x18
Mode"
Val1
Checksum
0x18 "ERR"
Val1
Checksum
"Screen
0x19
Size"
Val1
Checksum
0x19 "ERR"
1 Preparations
51