Sharp Notevision PG-D3550W Manual de instalación - Página 4
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RS-232C Specifi cations and Commands
Computer control
A computer can be used to control the projector by connecting an RS-232C serial control cable (cross
type, commercially available) to the projector. (See page 24 of the projector's operation manual for
connection.)
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 / 38,400 bps / 115,200 bps
Data length: 8 bits
*Set the projector's baud rate to the same rate as used by the computer.
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
Command 4-digit
Response code format
Normal response
O
K
Info
•
When controlling the projector using RS-232C commands from a computer, wait for at least 30 seconds
after the power has been turned on, and then transmit the commands.
•
After sending an input selection or picture adjustment command and then receiving an "OK" response
code, the projector may take some time to process the command. If a second command is sent while the
projector is still processing the fi rst command, you may receive an "ERR" response code. If this happens,
try resending the second command.
•
When more than one code is being sent, send each command only after the response code for the
previous command from the projector is verifi ed.
•
"POWR????", "TABN _ _ _ 1", "TLPS _ _ _ 1", "TPOW _ _ _ 1", "TLPN _ _ _ 1", "TLTT _ _ _ 1",
"TLTM _ _ _ 1", "TLTL _ _ _ 1", "TNAM _ _ _ 1", "MNRD _ _ _ 1", "PJN0 _ _ _ 1"
− When the projector receives the special commands shown above:
* The on-screen display will not disappear.
* The "Auto Power Off" timer will not be reset.
− The special commands are available for applications that require continuous polling.
Note
•
If an underbar (_) appears in the parameter column, enter a space.
•
If an asterisk (*) appears in the parameter column, enter a value in the range indicated in brackets under
Control Contents.
-4
C3
C4
P1
P2
P3
Parameter 4-digit
(0DH)
Return code
Parity bit: None
Stop bit: 1 bit
Flow control: None
P4
Return code
Problem response (communication error or incorrect command)
E
R
R
(0DH)
(0DH)
Return code