NEC RS-232C user manual Application, Connectors and wiring, Communication Parameter

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: 9-pin D-Sub

Cable: Cross (reversed) cable or null modem cable

(Please refer “Controlling the LCD monitor via RS-232C Remote control” on User’s manual.)

2.2 LAN control

Connector: RJ-45 10/100 BASE-T

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 RS-232C Remote control

(1)	Communication system	Asynchronous
(2)	Interface	RS-232C
(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 re-connect to control the monitor again, after 15 minutes or more.

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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