
External Control | NEC LCD Monitor | 
1. Application
This document defines the communications method for control of the NEC LCD monitor, MultiSync X461UN /X461HB /X431BT /P401 /P461 /P521 /P701 /S401 /S461 /S521 and MULTEOS M401 /M461 /M521 when using an external controller.
2. Connectors and wiring
2.1RS-232C  Remote control
Connector: 
Cable: Cross (reversed) cable or null modem cable
(Please refer “Controlling the LCD monitor via 
2.2 LAN control
Connector: 
Cable: Category 5 or higher LAN cable
(Please refer “Controlling the LCD monitor via LAN control” on User’s manual.)
3. Communication Parameter
3.1 
(1)  | Communication system  | Asynchronous  | 
(2)  | Interface  | |
(3)  | Baud rate  | 9600bps  | 
(4)  | Data length  | 8bits  | 
(5)  | Parity  | None  | 
(6)  | Stop bit  | 1 bit  | 
(7)  | Communication code  | ASCII  | 
3.2 LAN control
(1)  | Communication system  | TCP/IP (Internet protocol suite)  | 
(2)  | Interface  | Ethernet (CSMA/CD)  | 
(3)  | Communication layer  | Transport layer (TCP)  | 
(4)  | IP address  | * Using the payload of TCP segment.  | 
(Default) 192.168.0.10  | ||
  | 
  | * If you need to change,  | 
(5)  | Port No.  | Please refer “Network settings” on User’s manual.  | 
7142 (Fixed)  | 
(Note)
The monitor will disconnect the connection if no packet data is received for 15 minutes.
And the controller (PC) has to 
3.3 Communication timing
The controller should wait for a packet interval before next command is sent. The packet interval needs to be longer than 600msec for the LCD monitor.
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