LG 55LV75A-5B User Guide

65. Reading luminance values (Command: m u)

Reads luminance values.

Transmission
[m][u][ ][Set ID][ ][FF][Cr]
Acknowledgement
[u][][SetID][][OK/NG][Data1][Data2][Data3][Data4]
[Data5][Data6][Data7][x]

Data1 00-64 backlight 0-100

Data2 00-ff: Upper 2-byte of CA210 measured value

Data3 00-ff: Lower 2-byte of CA210 measured value

CA210 measured value Hex: 0000-ffff, Decimal: 0 - 

65535

Data4 00-ff: Upper 2-byte of BLU measured value

Data5 00-ff: Lower 2-byte of BLU measured value

Data6 00-ff: Upper 2 bytes of BLU No. 2 sensor 

measured value

Data7 00-ff: Lower 2 bytes of BLU No. 2 sensor 

measured value

BLU measured value Hex: 0000-ffff, Decimal: 0 - 65535

* CA210 measured value is entered through the 

calibration procedure during final assembly. Default 

value is 0 before calibration.

** It may not be supported, depending on the model.

Check various statuses.

Transmission
[s][v][ ][Set ID][ ][Data][ ][FF][Cr]

Data  05: Check the normal operation of No.1 and 

No.2 luminance sensors.

 

06: luminance sensor being used: 

 

 07: Checks whether the main temperature 

sensors as well as the sensors located at the 

top and bottom work normally.

 

 08: Temperature of each temperature sensor 

when the set is powered off.

 

09: Fan Speed 

 

0x10: RGB sensing OK/NG (Check Screen)

Acknowledgement
[v][ ][Set ID][ ][OK/NG][Data][Data1][x]

When the Data is 05

Data1 00: All normal

 

01: BLU sensor 1 normal, BLU sensor 2 fail

 

02: BLU sensor 1 fail, BLU sensor 2 normal

 

03: All fail

When the Data is 06

Data1 00: No.1 luminance sensor is being used

 

01: No.2 luminance sensor is being used

When the Data is 07

Data1 00: All temperature sensors fail

 

01: Top normal, Bottom fail, Main fail

 

02: Top fail, Bottom normal, Main fail

 

03: Top normal, Bottom normal, Main fail

 

04: Top fail, Bottom fail, Main normal

 

05: Top normal, Bottom fail, Main fail

 

06: Top fail, Bottom normal, Main fail

 

07: All temperature sensors normal

When the Data is 08

Acknowledgement
[v][ ][SetID][ ][OK/NG][Data][Data1][Data2][Data3][x]

Data1: Temperature of the top sensor area when the 

set is powered off.

Data2: Temperature of the bottom sensor area when 

the set is powered off.

Data3: Temperature of the main sensor area when 

the set is powered off.

When the Data is 09

Acknowledgement
[v][ ][SetID][ ][OK/NG][Data][Data1][Data2][x]

Data1  00-ff: Upper 2-byte of Fan Speed

Data2  00-ff: Lower 2-byte of Fan Speed

Fan Speed: Hex 0-20D0, Decimal 0-8400

When the Data is 0x10

Acknowledgement
[v][ ][SetID][ ][OK][Data][Data1][x]

Data1  00: RGB all NG

 

01: B NG. G NG, R OK 

 

02: B NG. G OK, R NG 

 

03: B OK. G OK, R NG 

 

04: B NG. G NG, R OK 

 

05: B OK. G NG, R OK 

 

06: B NG. G OK, R OK 

 

07: RGB all OK

 

08: Loading

** It may not be supported, depending on the model.