User Manual
Backlight On
ASCII 'B', Hex 42, Decimal 66
Syntax 0xFE 0x42<number of minutes>
To turn the backlight on, send a command prefix followed by the character 'B' and the number of minutes for the backlight
to remain on. If <minutes> is sent as zero then the backlight will remain on indefinitely. The maximum value for <min-
utes> is 100. Example:
<command prefix> 0xFE
<command> 0x42
<minutes> 0 to 100
Backlight Off
ASCII 'F', Hex 46, Decimal 70
Syntax 0xFE 0x46
To turn the backlight off, send a command prefix followed by the character 'F'.
Clear Display
ASCII 'X', Hex 58, Decimal 88
Syntax 0xFE 0x58
This command clears any text and graphics off the display. To clear the display, send a command prefix followed the
character 'X'.
Set Brightness
ASCII 'Y', Hex 59, Decimal 89
Syntax 0xFE 0x89<hex value defining brightness>
This command sets the level of brightness for the text displayed on the VFD. The level of brightness that can be displayed is
from 100% being the brightest and 25% being the dimmest. To execute this command the user must send a command
prefix followed by the character 'Y' and a hex value between 0x00 and 0x03 defining the level of brightness. Please note that
different lighting conditions and filter will affect the actual value used. Also note that on power up of module the brightness
is set to 100% by default.
Cursor On
ASCII 'J', Hex 4A, Decimal 74
Syntax 0xFE 0x4A
To turn the cursor on at the current position, send a command prefix followed by the character 'J'. Note cursor is on by
default at power up.
Cursor Off
ASCII 'K', Hex 4B, Decimal 75
Syntax 0xFE 0x4B
To turn the cursor off at the current position , send a command prefix followed by the character 'K'.
6
Hex Values
Brightness
0x00 25%
0x01 50%
0x02 75%
0x03 100%