ACR89U-A1 – Reference Manual
Version 1.04
www.acs.com.hk
Page 21 of 57
Offset
Field Name
Type Size Value
Description
17
AbData
Hex
Var
-
Bitmap data of a row of the graphic
to be displayed
The sum of
wCmdLength
and
bColumnPosition
cannot exceed the column number of LCD (128).
R
ow
0
R
ow
1
BI
T-
M
AP
BY
TE
1
BI
T-
M
AP
BY
TE
2
LSB
BI
T-
M
AP
BY
TE
N
…
M
SB
…
..
R
ow
7
0 1 2
……
127
Column
Figure 3
: PC_to_ACR89_DisplayGraphic – Bitmap Format
The response to this command is the
ACR89_to_PC_DisplayStatus
message.
3.5.2.6. PC_to_ACR89_SetContrast
This command sets the contracts level of the LCD. This command context is slot independent.
Offset
Field Name
Type Size
Value
Description
10
BCmdCode
Hex
1
1Ch
-
11
wCmdLength
Hex
2
0001h
Size of command data (in big
endian)
13
abRfu
Hex
2
0000
Reserved for future
15
bContrastLevel
Hex
1
00h to 0x63h New LCD contrast level
The response to this command is the
ACR89_to_PC_DisplayStatus
message.
R
ow
2
BI
T-
M
AP
BY
TE
BI
T-
M
AP
BY
TE
BI
T-
M
AP
BY
TE
M