Ricoh PJ X3131  Control terminal,  Pin assignment,  Interface format,  Main Commands

CONTROL terminal

Pin assignment

	Pin No.	Signal Name	Description
	1	DCD	Data carrier detect
	2	TXD	Sending data
	3	RXD	Receiving data
	4	DTR	Data terminal ready
	5	GND	Signal ground
	6	DSR	Data set ready
	7	RTS	Request to send
D sub 9 pin connector	8	CTS	Consent to send
	9	RI	Ring indicator

 Interface format

1. Communication method	RS-232C, 9600 bps, No Parity, Data Length: 8 bits;
	Stop Bit Length: 1 bit

2. Communication format

STX (02 h)

Command (3 Byte)

ETX (03 h)

Only 1 command valid per communication.

3. Data formatFor input commands, only ASCII-compliant all- uppercase alphanumeric characters supported.

4. Replies	Acknowledge
	No acknowledge

ACK (06 h)	CR(0 Dh)	Data
ACK (06 h)	ESC(1 Bh)
NAK (15 h)

... Normally ended

... Aborted

If commands are to be sent consecutively, wait for the response from the projector before sending the next command.

 Main Commands

Item	Command
Power on	PON
Power off	POF
Icon display on	MO0
Icon display off	MO1
Auto setting (RGB input)	PAT
Status display on	DON
Status display off	DOF	Others

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