4.4 RS-232 Specification

Important:

This document is applicable to the following products and models.

NovoTouch EK4 series EK656i, EK756i, and EK866i.

Serial Port Settings:

Item	Value
Baud Rate	9600bps (Fixed)
Data Bits	8 (Fixed)
Stop Bits	1 (Fixed)
Parity	None (Fixed)

Command Format:

No.	Content	Description	Remark
1	0x55	Head	Fixed Value
4			Main
5			Subcommand
6	0x00	Length	Valid data
8	0xDD	End	Fixed Value
9	0xEE		Fixed Value
10	0xFF		Fixed Value

Code List

NovoTouch EK4 series EK656i, EK756i, and EK866i.

Set Command

• The 5th byte is checksum

No	Description	Code	Remark
1	POWER ON	55 00 8E 00 E3
2	POWER OFF	55 00 8E 0F F2
3	SOURCE	55 00 80 00 D5
4	Up	55 00 00 01 56
5	Down	55 00 00 02 57
6	Left	55 00 00 03 58
7	Right	55 00 00 04 59
8	OK	55 00 00 00 55
9	Menu	55 00 14 00 69
10	Exit	55 00 16 00 6B
11	Info	55 00 18 00 6D
12	Mute	55 00 1A 00 6F
13	Sound Mode	55 00 22 00 77	Standard
		55 00 22 02 79	User defined
		55 00 22 03 7A	Movie
14	Picture mode	55 00 28 00 7D	Standard
		55 00 28 01 7E	Soft
		55 00 28 02 7F	Bright
		55 00 28 03 80	User defined
15	Volume plus +	55 00 0C 00 61
	Volume plus –	55 00 0E 00 63
16	Set Volume(0～100)	55 00 0F 00 64	0
		55 00 0F 64 C8	100
17	Return	55 00 0A 00 5F
18	Switch to HDMI 1	55 00 80 08 DD
19	Switch to HDMI 2	55 00 80 09 DE
20	Switch to HDMI 3	55 00 80 11 E6
21	Switch to OPS	55 00 80 0B E0
22	Switch to front HDMI	55 00 80 0A DF
23	Switch to TYPE-C 1	55 00 80 16 EB
24	Set Contrast(0～100)	55 00 2A 00 7F	0
		55 00 2A 64 E3	100
25	Set Brightness	55 00 2C 00 81	0
		55 00 2C 64 E5	100
26	Set Saturation(0～100)	55 00 2E 00 83	0
		55 00 2E 64 E7	100
27	Set HUE(0～100)	55 00 30 00 85	0
		55 00 30 64 E9	100
28	Set Sharpness	55 00 32 00 87	0
		55 00 32 64 EB	100
29	Set BASS	55 00 3A 00 8F
30	Set Treble	55 00 3C 00 91
31	Set Balance	55 00 3E 00 93
32	Factory Reset	55 00 84 00 D9
33	Set Backlight(0～100)	55 00 89 00 DE	Under backlight mode is standard
		55 00 89 64 42
34	Screen shot	55 00 8A 00 DF
35	Home	55 00 91 00 E6

Get Command

• The 5th byte is checksum

No	Description	Code	Remark
1	Source	55 00 81 00 D6
2	Contrast	55 00 2B 00 80
3	Sturation	55 00 2F 00 84
4	HUE	55 00 31 00 86
5	Sharpness	55 00 33 00 88
6	BASS	55 00 3B 00 90
7	Treble	55 00 3D 00 92
8	Balance	55 00 3F 00 94
9	Picture mode	55 00 61 00 B6	Standard
		55 00 61 01 B7	Soft
		55 00 61 02 B8	Bright
		55 00 61 03 B9	User defined
10	Volume	55 00 65 00 BA
11	TV status query	55 00 45 00 9A	01: Power on, 02: Standby
12	Backlight	55 00 8B 00 E0