User Manual

Command Reference
28 Elektronik-Systeme Lauer, MAEN976
6.6 MCC_BRIGHTNESS (0x81)
Brightness
Adjusts or queries the brightness value of the video controller. This command affects
only the brightness of the video controller, not the brightness of the backlight lamp
or LED array.
Supported since Firmware Version
MT223 NAV-230G: 1.0
MT226 NAV-230G: 1.0-DSCALE2
Command Stream
0 1 2 3 4 5 6 7...7+[LEN]-1 7+[LEN]
0x07 ADR
0x4D 0x43 0x43 LEN ICHKH 0x81 Param ICHKD
Param: ABSOLUTE
Value: “00”: dark … “FF”: bright
Type: Two-digit ASCII-encoded hexadecimal number
Length: 2
Description: New brightness level
Param: INC
Value: “+” (0x2B)
Type: ASCII character
Length: 1
Description: Increment the current brightness value
Param: DEC
Value: “-” (0x2D)
Type: ASCII character
Length: 1
Description: Decrement the current brightness value
Param: RESET
Value: “R” or “r” (0x52 or 0x72)
Type: ASCII character
Length: 1
Description: Reset the brightness to an internally predefined value
Param: QUERY
Value: “?” (0x3F)
Type: ASCII character
Length: 1
Description: Query the current brightness value