Mitsubishi Electronics MDT521S user manual Interface, Control command diagram

Controlling the LCD monitor via RS-232C/RS-485 Remote Control

This LCD monitor can be controlled by the computer connected by an RS-232C cable or a CAT5 cable via the supplied CAT5 Tx BOX.

Functions that can be controlled by a personal computer are:

•Power ON or OFF

•Switching between input signals

Connection

Connection by RS-232C (For RS-232C cable, the reverse type cable should be used.)

	Monitor	Monitor
PC	To RS-232C IN To RS-232C OUT	To RS-232C IN To RS-232C OUT

RS-232C cable RS-232C cable

Connection by CAT5 RS-485 (For CAT5 cable, the straight type cable should be used)

	Type A	Type B	CAT5 Tx BOX
			(supplied)
	USB cable			Monitor		Monitor
PC	To RS-232C		To CAT5	To CAT5	To CAT5	To CAT5	To CAT5
		IN	OUT	RGB5 IN	OUT	RGB5 IN	OUT

	CAT5 cable	CAT5 cable
RS-232C cable

This connection isn’t necessary when the USB COM port is used.

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.

1) Interface

PROTOCOL	RS-232C/RS-485 (CAT5)
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 (In 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

English-35