Samsung H32B User Manual page 42

1
Preparations
Header
0xAA
"ERR": A code showing what error has occurred.
0 : Check Sum Error
1 : Not Supported Command
Contrast Control
Function
The "Contrast" of a product can be changed using a PC.
Get "Contrast" Status
Header
0xAA
Set "Contrast"
Header
0xAA
"Contrast" : Contrast value code to be set on a product ( 0 ~ 100 )
Ack
Header
0xAA
"Contrast" : Contrast value code to be set on a product ( 0 ~ 100 )
Nak
Header
0xAA
"ERR": A code showing what error has occurred.
0 : Check Sum Error
1 : Not Supported Command
Command Data length
ID
0xFF 3
Command
ID
0x24
Command
ID
0x24
Command Data length
ID
0xFF 3
Command Data length
ID
0xFF 3
Ack/Nak r-CMD
'N' 0x14
Data length
Checksum
0
Data length Data 1
1 "Contrast"
Ack/Nak r-CMD
'A' 0x24
Ack/Nak r-CMD
'N' 0x24
Val1
Checksum
"ERR"
Checksum
Val1
Checksum
"Contrast"
Val1
Checksum
"ERR"
41
1 Preparations