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4.2 Message block format

“Message block format” is allied to the “Message Type” in the “Header”.

Refer to the section 4.1 “Header block format” for more detail.

1)Get current parameter

The controller sends this message when you want to get the status of the monitor.

For the status that you want to get, specify the “OP code page” and “OP code”,

refer to “Appendix A. Operation code table”.

“Message format” of the “Get current parameter” is as follows,



Refer to section 5.1 “Get current parameter from a monitor.” for more details.

2)Get Parameter reply

The monitor will reply with the status of the requested item specified by the controller

in the “Get parameter message”.

“Message format” of the “Get parameter reply” is as follows,



Refer to section 5.2 “Get parameter reply” for more details.

3)Set parameter

The controller sends this message to change a setting of the monitor.

Message format of the “Set parameter” is as follows,



Refer to section 5.3 “Set parameter” for more details.

4)Set Parameter reply

The monitor replies with this message for a confirmation of the “Set parameter message”.

Message format of the “Set parameter reply” is as follows,



Refer to section 5.4 “Set parameter reply” for more details.

5)Command

“Command message” format depends on each command.

Usually, this “command message” is used for some non-slider controls and some special operations,

such as “Save current settings”, “Get timing report”, “power control”, “Schedule”, etc. Refer

Header

Message

Check code Delimiter

STX OP code

page

OP code

ETX

STX Result OP code

page

OP code

Type Max value Current Value ETX

MSB

LSB MSB

LSB

STX

OP code

page

OP code

Set Value ETX

MSB

LSB

STX

Result

OP code

page

OP code

Type Max value Requested setting

Value

ETX

MSB

LSB MSB

LSB

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NEC MultiSync C431 Specifications

General

Response time	6.5 ms
Display diagonal	50 \
Display brightness	400 cd/m²
Display technology	LCD
Native aspect ratio	-
Vertical scan range	24 - 85 Hz
Horizontal scan range	31.5 - 91.1 kHz
LED backlighting type	Edge-LED
Display number of colors	1.073 billion colors
Display diagonal (metric)	125.73 cm
Active display area (W x H)	1095 x 616 mm
Supported graphics resolutions	800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 768, 1280 x 800, 1280 x 960, 1360 x 768 (WXGA), 1400 x 1050 (SXGA+), 1440 x 900 (WXGA+), 1600 x 1200 (UXGA), 1680 x 1050 (WSXGA+), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA)
USB 2.0 ports quantity	1
Ethernet LAN data rates	10, 100 Mbit/s
Annual energy consumption	110 kWh
Power consumption (standby)	0.5 W
Power consumption (typical)	75 W
USB version	2.0
Ethernet LAN	Yes
HDMI ports quantity	3
Compatible memory cards	MicroSD (TransFlash)
Purpose	Universal
Product type	Group video conferencing system
Product color	Black
Number of persons	- person(s)
Operating hours (hours/days)	24/7
International Protection (IP) code	IP5X, IP2X
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	20 - 80 %
Orientation	Horizontal/Vertical
Certification	CE; EMC B; FCC; PSB; TÜV GS; UL/C-UL / CSA; VCCI
Product design	Digital signage flat panel
Placement supported	Indoor
Bezel width (bottom)	12.4 mm
Panel mounting interface	300 x 300 mm
Audio formats supported	MP3, WAV
Image formats supported	JPG, PNG
Video formats supported	FLV, H.264, MOV, MP4, WMV
Sustainability certificates	RoHS, ENERGY STAR
RMS rated power	20 W
Number of built-in speakers	2
Megapixel	- MP
Image sensor size	- \
Cables included	AC, DisplayPort, HDMI