Barco Projector User Manual page 69

Description :
Read the status of the backlight of the 2 line LCD.
Command :
Command[0]
Command[1]
Data :
No data bytes.
Return data :
Data[0] = status.
Status
Off
On
Projector type :
All projectors equipped with a 2 line LCD.
2 line LCD, read backlight
\x7a
\x04
Data[0]
\x00
\x01
69