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Requesting projector status (Get command)
(1) Send the request code Command data (‘02H’+‘00H’+ type (2 bytes)
+‘00H’+‘00H’) from the computer to the projector.
(2) The projector returns the response code ‘1DH’+ data (2 bytes) to the computer.
Changing the projector settings (Set command)
(1) Send the setting code Command data (‘01H’+‘00H’+ type (2 bytes) +
setting code (2 bytes)) from the computer to the projector.
(2) The projector changes the setting based on the above setting code.
(3) The projector returns the response code ‘06H’ to the computer.
Using the projector default settings (Reset Command)
(1) The computer sends the default setting code Command data (‘06H’+‘00H’+
type (2 bytes) +‘00H’+‘00H’) to the projector.
(2) The projector changes the specified setting to the default value.
(3) The projector returns the response code ‘06H’ to the computer.
Increasing the projector setting value (Increment command)
(1) The computer sends the increment code Command data (‘04H’+‘00H’+
type (2 bytes) +‘00H’+‘00H’) to the projector.
(2) The projector in creases the setting value on the above setting code.
(3) The projector returns the response code ‘06H’ to the computer.
Decreasing the projector setting value (Decrement command)
(1) The computer sends the decrement code Command data (‘05H’+‘00H’+
type (2 bytes) +‘00H’ + ‘00H’) to the projector.
(2) The projector decreases the setting value on the above setting code.
(3) The projector returns the response code ‘06H’ to the computer.
When the projector cannot understand the received command
When the projector cannot understand the received command, the error code Å'15HÅ' is
sent back to the computer. Some times, the computer cannot properly receive the
command. In such a case, the command is not executed and the error code ≈'15H' is
When the projector cannot execute the received command
When the projector cannot execute the received command, the the error code ≈
'1cH' +'xxxxH' is sent back to the computer.
When the data length is greater than indicated by the data length code, the projector will
ignore the excess data code. Conversely, when the data length is shorter than indicated
by the data length code, an error code will be returned to the omputer.
sent back to the computer. If this error code is returned, send the same command again.
RS-232C COMMUNICATION (continued)
•
Operation cannot be guaranteed when the projector receives an
undefined command or data.
• Provide an interval of at least 40ms between the response code and any other code.
• The projector outputs test data when the power supply is switched ON, and when the
lamp is lit. Ignore this data.
• Commands are not accepted during warm-up.
NOTE
CP-S318/328W/TECHNICAl責了 03.5.27 2:39 PM ページ 6
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