NEC LCD5710 user manual Connection, English-30

Controlling the LCD monitor via RS-232C Remote Control

This LCD monitor can be controlled by connecting a personal computer with a RS-232C terminal.

Functions that can be controlled by a personal computer are:

¥Power ON or OFF

¥Switching between input signals

Connection

LCD Monitor + PC

	to RS-232C	from RS-232C	to RS-232C	from RS-232C
PC	ÒINÓ terminal	ÒOUTÓ terminal	ÒINÓ terminal	ÒOUTÓ terminal

RS-232C Cable

RS-232C Cable

Next MultiSync LCD5710

RS-232C ÒINÓ terminal

NOTE: If your PC (IBM or IBM compatible) is equipped only with a 25-pin serial port connector, a 25-pin serial port adapter is required. Contact your dealer for details.

* RS-232C OUT terminal can connect MultiSync LCD5710 only. Do not connect other equipment.

The following control sequence is used for a single MultiSync LCD5710. To control multiple MultiSync LCD5710 monitors that are daisy-chained together please use the extended control command. Instructions for the extended control command can be found on the CD included with the display. The file is called ÒExternal_control_LCD5X10.pdfÓ. When using the following control commands, all of the daisy-chained monitors can be controlled at the same time from one monitor. Reply and status commands, however, will only pertain to the primary monitor, not secondary monitors.

1) Interface

PROTOCOL	RS-232C
BAUD RATE	9600 [bps]
DATA LENGTH	8 [bits]
PARITY BIT	NONE
STOP BIT	1 [bits]
FLOW CONTROL	NONE

This LCD monitor uses RXD, TXD and GND lines for RS-232C control.

2)Control command diagram

The command is structured by the address code, function code, data code and end code. The length of the command is different for each function.

	Address code	Function code	Data code		End code
HEX	30h 30h	Function	Data		0Dh
ASCII	'0' '0'	Function	Data
	[Address code]	30h 30h (ASCII code, '0' '0'), fixed.
	[Function code]	A code of each fixed control move.
	[Data code]	A code of each fixed control data (number) and not always indicated.
	[End code]	0Dh (In ASCII code, '		') fixed.

English-30

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