NEC LCD3000 Manuel Utilisateur page 40

3) Control sequence
(1) The command from a computer to the LCD monitor will be sent within 400ms.
(2) The LCD monitor will send a return command 400ms* after it has received and executed a code. If the command isn't
received correctly, the LCD monitor will not send the return command.
(3) The computer checks the command and confirms if the command which has been sent has been executed or not.
(4) The LCD monitor sends various codes other than the return code. When using the control sequence via RS-232C,
rejection of other codes from computer side is required.
*: The sending time of return command may delay depending on the condition (during changing the input signal, etc.).
Example: Turn power ON (Corresponding ASCII code in ' ' )
Sending commands
from computer
30 30 21 0D
'0' '0' '!' ' '
4) Operation commands
The operation commands execute the basic operation setting of the LCD monitor.
It may not operate when changing the signal:
Operation ASCII
POWER ON !
POWER OFF "
INPUT RGB 1 _r1
INPUT RGB 2 _r2
INPUT RGB 3 _r3
INPUT VIDEO _v1
INPUT DVD/HD _v2
• POWER OFF command will not work for 1 minute after the power is turned on.
• POWER ON command will not work for 1 minute after the power is turned off.
01_English 28
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Status code from
Meaning
LCD monitor
Command for
POWER ON
30 30 21 0D Command received
'0' '0' '!' ' ' (Command echoed back)
HEX
21h
22h
5Fh 72h 31h
5Fh 72h 32h
5Fh 72h 32h
5Fh 76h 31h
5Fh 76h 32h
English-28
15/10/02, 12:08 pm