Hatteland Display 13 inch - HD 13T21 STD (Widescreen) - Manual (Page 16)

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DOC101681-1- rev.2
16
8 and 13" DIS DDC Control
All intellectual properties belongs to Hatteland Display AS
[S] 6F [R] 6E 84 E4
01 11 C8 86 [P]
Red color  Set or Get data length.
Green color  Sub function ID.
Blue color  Set or get data.
3.3.6. Sub-Function: 0x15 Back Light PWM output value setting.
This command is PWM output value control direct to back light that value range is 0 to
60000.
Command example:
[S] 6E [W] 51 86 E7 F3
02 15 A5 D7 C8 [P]
Red color  set data length.
Green color  Sub function ID.
Blue color  set data.
0xA5 is high byte of word data.
0xD7 is low byte of word data.
 Watchdog and ALARM Control
VCP
Code
Sub-F Function Description
D
N
Type
R W
0xF3 0x20 c1) Watchdog Monitor Enable 0 WO
0xF3 0x21 c2) Watchdog Monitor Enable Wait Time ( second ) 2 2 RW
0xF3 0x22 c3) Watchdog Monitor Count Reset 0 WO
0xF3 0x24 c5) ALARM Reset 0 WO
0xF3 0x25 c6) ALARM Fault Test (Set Buzzer ON / Error LED Red) 0 WO
0xF3 0x26 c7) ALARM Sound OFF 0 WO
0xF3 0x27 c8) ALARM ACK ( Set Error LED Dark / Buzzer OFF) 0 WO
0xF3 0x28
c9) I/O status return ( for Error LED , Relay K1 , HS ,
Buzzer
1 1 RW
3.3.7. Sub-Function: 0x20 Watchdog Monitor Enable ON/OFF
This command is watchdog monitor turn it ON.
Command example:
[S] 6E [W] 51 84 E7 F3
00 20 8F [P]
Red color  set data length.
Green color  Sub function ID.
3.3.8. Sub-Function: 0x21 Watchdog Monitor Enable Wait Time