NEC MultiSync C431 - User Manual

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External Control NEC LCD Monitor
Rev.1.0(G5)
INDEX
I. Application ............................................................................................................................................. 4
II. Preparation ........................................................................................................................................... 5
2. Connectors and wiring ......................................................................................................................... 5
2.1 RS-232C Remote control .................................................................................................................... 5
2.2 LAN control ......................................................................................................................................... 5
III. Communication specification ............................................................................................................ 6
3. Communication Parameter .................................................................................................................. 6
3.1 RS-232C Remote control .................................................................................................................... 6
3.2 LAN control ......................................................................................................................................... 6
3.3 Communication timing ....................................................................................................................... 6
4. Communication Format ........................................................................................................................ 7
4.1 Header block format (fixed length) ................................................................................................... 8
4.2 Message block format ...................................................................................................................... 10
4.3 Check code ....................................................................................................................................... 12
4.4 Delimiter ........................................................................................................................................... 12
5. Message type ...................................................................................................................................... 13
5.1 Get current Parameter from a monitor. .......................................................................................... 13
5.2 "Get parameter" reply ...................................................................................................................... 14
5.3 Set parameter ................................................................................................................................... 16
5.4 "Set parameter" reply ...................................................................................................................... 17
5.5 Commands ........................................................................................................................................ 18
5.5.1 Save Current Settings. .................................................................................................................. 18
5.5.2 Get Timing Report and Timing reply. ........................................................................................... 19
5.5.3 NULL Message ............................................................................................................................... 20
IV. Control Commands ........................................................................................................................... 21
6. Typical procedure example ............................................................................................................... 21
6.1. How to change the “Backlight” setting. ........................................................................................ 21
6.2. How to read the measurement value of the built-in temperature sensors. ................................. 24
6.3. Operation Code (OP code) Table .................................................................................................... 27
7. Power control procedure ................................................................................................................... 37
7.1 Power status read ............................................................................................................................ 37
7.2 Power control ................................................................................................................................... 39
8. Asset Data read and write ................................................................................................................. 41
8.1 Asset Data Read Request and reply................................................................................................ 41

Summary

I. Application

II. Preparation

2. Connectors and wiring

Details on RS-232C and LAN connection types and cables for external control.

III. Communication specification

3. Communication Parameter

Specifies communication parameters for RS-232C and LAN, including baud rate and IP address.

3.3 Communication timing

Defines recommended waiting periods between commands for reliable communication.

IV. Control Commands

6. Typical procedure example

Demonstrates step-by-step procedures for common controls like backlight and temperature reading.

7. Power control procedure

Details the commands and responses for reading and controlling monitor power status.

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

Weight and Dimensions

Depth	45 mm
Width	1125 mm
Height	645 mm
Weight	16100 g