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(RS-232C) Specifications and Command Settings
PC control
A computer can be used to control the projector by connecting an RS-232C cable (null modem, cross type, sold
separately) to the projector. (See page
Communication conditions
Set the serial port settings of the computer to match that of the table.
Signal format: Conforms to RS-232C standard.
Baud rate: 9,600 bps
Data length: 8 bits
Parity bit: None
Stop bit: 1 bit
Flow control: None
Basic format
Commands from the computer are sent in the following order: command, parameter, and return code. After the
projector processes the command from the computer, it sends a response code to the computer.
Command format
C1 C2 C3 C4 P1 P2 P3 P4
Command 4-digit
Response code format
Normal response
O
K
Problem response (communication error or incorrect command)
E
R
When more than one code is being sent, send each command only after the OK response code for the previous
command from the projector is verified.
• When using the computer control function of the projector, the projector operating status cannot be read to the computer.
Therefore, confirm the status by transmitting the display commands for each adjustment menu and checking the status with
the On-screen Display. If the projector receives a command other than a menu display command, it will execute the com-
mand without displaying the On-screen Display.
Commands
EXAMPLE
• When "BRIGHT" of INPUT 1 (RGB 1) image adjustment is set to
Computer
_
R
A
B
R
CONTROL CONTENTS
POWER ON
POWER OFF
VOLUME (0 – 60)
MUTE ON
MUTE OFF
LENS FOCUS ( 30 –
30)
LENS ZOOM ( 30 –
30)
KEYSTONE ( 127 –
127)
V-SIZE ( 30 –
30)
DIGITAL SHIFT ( 96 –
96)
73
for connection.)
16
Parameter 4-digit
Return code (0DH)
Return code (0DH)
R
→
1
0
←
COMMAND PARAMETER
RETURN
OK OR ERR
P
O
W
R
_
_
_
1
P
O
W
R
_
_
_
0
OK OR ERR
V
O
L
A
_
_
*
*
OK OR ERR
M
U
T
E
_
_
_
1
OK OR ERR
OK OR ERR
M
U
T
E
_
_
_
0
L
N
F
O
_
*
*
*
OK OR ERR
L
N
Z
O
_
*
*
*
OK OR ERR
K
E
Y
S
*
*
*
*
OK OR ERR
OK OR ERR
V
S
I
Z
_
_
*
*
L
N
D
S
_
*
*
*
OK OR ERR
Return code (0DH)
10.
Projector
O
K
CONTROL CONTENTS
BLACK SCREEN ON
BLACK SCREEN OFF
INPUT 1 (RGB 1)
INPUT 2 (RGB 2)
INPUT 3 (RGB 3)
INPUT 4 (VIDEO 1)
INPUT 5 (VIDEO 2)
INPUT CHECK
FREEZE ON
FREEZE OFF
AUTO SYNC START
COMMAND PARAMETER
RETURN
OK OR ERR
I
M
B
K
_
_
_
1
I
M
B
K
_
_
_
0
OK OR ERR
I
R
G
B
_
_
_
1
OK OR ERR
I
R
G
B
_
_
_
2
OK OR ERR
OK OR ERR
I
R
G
B
_
_
_
3
I
V
E
D
_
_
_
1
OK OR ERR
I
V
E
D
_
_
_
2
OK OR ERR
I
C
H
K
_
_
_
0
OK OR ERR
OK OR ERR
F
R
E
Z
_
_
_
1
OK OR ERR
F
R
E
Z
_
_
_
0
A
D
J
S
_
_
_
1
OK OR ERR
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