RS232 Commands
Planar UltraLux Series Installation Guide
35
RS232 Commands
The following table provides the RS232 commands that can be used.
Keep the following points in mind:
•
Command length
: 8 bytes (64 bits) for "Set" Commands, 4 bytes for "Get"
Commands
•
Required check sum for each command
: 100h (the last byte value is chosen to
force the check sum to 100 hex)
• The baud rate is 19200 (8 data bit, 1 stop bit, no parity, no flow control)
•
Example in hex for "Set Backlight Brightness to 80"
:
08 22 00 00 00 00
50
86
(where green bytes are the command, blue is the value, red makes the check
sum = 100h)
Item Command Description
Command Value in hex
Command Result
1
Set Power to "off"
08 22 FE 00 00 00 00 D8
video board is set to soft power
off mode; backlight off
2
Set Power to "on"
08 22 FD 00 00 00 00 D9
video board is set to soft power
on mode; backlight on if video
source is present or when first
searching for video source
3
Get Power Status
04 21 16 C5
returns "Power: ON" if on;
"Power:" if off'; "Power: OFF" if on
but no video source present
4
Set Backlight
Brightness to "X" (1 to
100)
Set to 80: 08 22 00 00 00
00 50 86
backlight brightness set to
commanded value
5
Get Backlight
Brightness
04 21 08 D3
returns "Backlight = value"
6
Set Contrast to "X" (0 to
100)
Set to 40: 08 22 01 00 00
00 28 AD
contrast set to commanded
value (note: contrast changes are
not saved when hard power is
turned off—known bug)
7
Get Contrast
04 21 09 D2
returns "Contrast = value"
8
Set Sharpness to "X" (-4
to 4)
Set to -4: 08 22 03 00 00 00
00 D3
sharpness set as commanded
(for -4 a value of 0 is used; for 4, 8
is used)
9
Get Sharpness
04 21 0A D1
returns "Sharpness = value"
where value is Sharpness setting
+ 4
