NEC S521 user manual Connection, English-29

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.

NOTE: When you use this function, EXTERNAL CONTROL should be “RS-232C” (See page 23).

Functions that can be controlled by a personal computer are:

•Power ON or OFF

•Switching between input signals

Connection
LCD Monitor + PC	MultiSync	MultiSync

English

PC	IN	OUT	RS-232C (IN)	RS-232C (OUT)	RS-232C (IN)
(Out)

RS-232C Cable RS-232C Cable

RS-232C (OUT)

MultiSync

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

*In order to function, the RS-232C OUT terminal can only be connected to another monitor of the same model. Do not connect to other types of equipment.

To control monitor or multiple monitors that are daisy-chained together please use the control command. Instructions for the control command can be found on the CD included with the display. The file is called “External_control.pdf”.

Multiple monitors that are daisy-chained have a limit to the conectable monitor.

1) Interface

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

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

The reverse type cable (null modem cable) (not include) should be used for RS-232C control.

2)Control command diagram

Please see file “External_Control.pdf” on the CD-ROM.

English-29