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Appendix
RS-232C Specifications and Command Settings
Computer control
A computer can be used to control the projector by connecting an RS-232C serial control cable
(cross type, sold separately) to the projector. (See page 24 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. Parity bit: None
Baud rate: * 9,600 bps/115,200 bps Stop bit: 1 bit
Data length: 8 bits Flow control: None
* 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.
Return code (0DH)
C1 C2 C3 C4 P1 P2 P3 P4
Response code format
Normal response
Problem response (communication error or incorrect command)
O K
E R R
Command 4-digit Parameter 4-digit
Command format
Return code (0DH)
Return code (
0DH)
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 command and then receiving an “OK” response code, the projector
may take some time to process the command. Please be aware that commands should be sent at
intervals of at least 5 seconds.
• When more than one code is being sent, send each command only after the response code for the
previous command from the projector is verified.
• “POWR????” “TABN _ _ _ 1” “TLPS _ _ _ 1” “TPOW _ _ _ 1” “TLPN _ _ _ 1” “TLTT _ _ _ 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.
• 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.
*1 For setting the projector name, send the commands in the order of PJN1, PJN2 and PJN3.
*2 This command should be sent only after the “IRGB _ _ _ 2” command is sent and an “OK” response
code is received.
*3 The Lamp Timer Reset command is available only in standby mode.
Note