Mitsubishi hc1600 补充手册

3) Control sequence

(1) Send the command from the personal computer to the projector.
(2) The projector will send a return command after it receives an end code. If the command is not received

correctly, the projector will not send the return command.

(3) The personal computer checks the command and conﬁrms if the sent command has been executed or not.
(4) This projector sends various codes other than the return code. When having a control sequence by RS-232C,

reject other codes from the personal computer.

• During signal switching, the command may not take effect even when the projector sends the return command.

After signal switching completes, wait for the mode indication to disappear before sending the next command.

• When sending commands successively, wait to receive the return command of the current command before

sending a next command.

• Keep intervals of at least 400 ms between receipt of a return command and sending of a next command.
• Any commands will not be executed for 10 seconds after the power is turned on.

[Example] When turning the power ON. (Figures and symbols enclosed in quotation marks are ASCII codes.):

Sending commands

from the PC, etc.

Status code

from the projector

Description

30 30 21 0D
‘0’ ‘0’ ‘!’ ‘ ’

Command for POWER ON

30 30 21 0D
‘0’ ‘0’ ‘!’ ‘ ’

Command receipt conﬁrmation
(Command echo back)

4) Operation commands

(Not executable in stand-by mode. When the commands for input select are sent

while the splash screen is being displayed, the splash screen is only canceled.)
The operation commands are used for the basic operation setting of this projector. They may not be executed
while the signals are changed. The operation commands have no data codes.

Operation

ASCII

HEX

Note

POWER ON

21h

This command is invalid for 1 minute after the power is turned off.

POWER OFF

22h

This command is invalid for 1 minute after the power is turned on.

INPUT COMPUTER

_r1

5Fh 72h 31h