Mitsubishi S290U Service Manual page 4

CONTROL THIS PROJECTOR BY USING A PERSONAL COMPUTER
This projector can be controlled by connecting a personal computer with RS-232C terminal.
Functions can be controlled by a personal computer:
• Turn the ON or OFF
• Changing input signals
• Button input by remote control or control panel
• Reading warning data
• Menu setting
Connection
Projector + IBM PC or IBM PC compatibles
to Com1
Comport
RS-232C cable
D-SUB 9P
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
BAUD RATE 9600 [bps]
DATA LENGTH 8 [bits]
PARITY BIT NONE
STOP BIT 1 [bits]
FLOW CONTROL NONE
This projector uses RXD,TXD and GND lines for RS-232C control.
For RS-232C cable, the reverse type cable should be used.
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 by each function.
Address code
HEX 30h 30h
ASCII '0' '0'
[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, '
to RS-232C
terminal
D-SUB 9P
Function code
Function
Function
')fixed.
to modem port
or printer port
RS-232C adaptor
for Macintosh (option)
Mini DIN 8P D-SUB 9P
Data code End code
Data 0Dh
Data
to RS-232C
terminal
D-SUB 9P D-SUB 9P
3