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Writing the LCD contrast value
This command is used to adjust the display contrast. Values between 0
and 4095 are accepted. The display contrast decreases with increasing
values. A comfortable display is achieved in the range 800 to 1800.
Example: writing display contrast value 800
Byte
Transmit
0
0C
1
00
2
03
3
02
4
0B
5
00
6
00
7
00
8
50
9
03
10
00
11
00
Reading the LCD contrast value
This command is used to read out the display contrast. The value can
be between 0 and 4095. The display contrast decreases with increasing
values. A comfortable display is achieved in the range 800 to 1800.
Example: reading display contrast value 800
Byte
Transmit
0
0C
1
00
2
03
3
01
4
0B
5
00
6
00
7
01
EXDUL-581E / EXDUL-581S © 2019 by Messcomp Datentechnik GmbH
Representing
Command code 1st Byte
Command code 2nd Byte
Command code 3rd Byte
Length byte → 8 Byte
LCD command LCD contrast
reserved
reserved
write function
Contrast value (Lowbyte - 00...FF)
Contrast value (Highbyte - 00...0F)
reserved
reserved
Representing
Command code 1st Byte
Command code 2nd Byte
Command code 3rd Byte
Length byte → 4 Byte
LCD command LCD contrast
reserved
reserved
read function
wasco
Receive
Representing
0C
Command code 1st Byte
00
Command code 2nd Byte
03
Command code 3rd Byte
Length byte → 0 Byte
00
Receive
Representing
0C
Command code 1st Byte
00
Command code 2nd Byte
03
Command code 3rd Byte
Length byte → 4 Byte
01
50
Contrast value (Lowbyte - 00...FF)
03
Contrast value (Highbyte - 00...0F)
00
reserved
00
reserved
®
EV03
62
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