Pioneer PDP-427CMX 2Interface

RS-232C Adjustment

1)Connector

D-sub 9 pins (male/straight)

2)Pin layout

3)Baud Rate

9 600 bps (standard)

(switch-able to 1 200, 2 400, 4 800, 19 200, 38 400 bps)

Note

The baud rate of this display should be set to match the baud rate of the PC.

Also, when the RS-232C cable is extended over a long distance, use a slower baud rate.

4)Data format Start bit: 1 bit Data bit: 8 bit Parity: no Stop bit: 1 bit

5)Connection

Control PC			Control PC
(with D25 serial port )		Plasma Display	(with D9 serial port)		Plasma Display
RXD 3	2	2 TXD	RXD 2	2	2 TXD
TXD 2	3	3 RXD	TXD 3	3	3 RXD
CTS 5	2	8 RTS	CTS 8	2	8 RTS
GND 7		5 GND	GND 5		5 GND
* D-sub 9-pin/D-sub 25-pin conversion tables are now available on the market.				Straight Cable

6)Protocol

From the PC to the display

(1) Sending one command at a time:

	STX (02 hex)	ID (2 Byte)	COMMAND (3 Byte or 6 Byte)		ETX (03 hex)

(2) Sending numerical direct commands:

	STX (02 hex)	ID (2 Byte)	COMMAND (3 Byte)	ARGUMENT (3 Byte)		ETX (03 hex)

ID, COMMAND, ARGUMENT are transmitted as ASCII characters.

From the display to a PC

(1) Echo back (Normal response)

Command received and returned but the ID is not returned.

STX (02 hex) COMMAND (3 Byte or 6 Byte) ETX (03 hex)

Received command is a numerical direct effect command and numerical data is returned:

STX (02 hex) COMMAND (3 Byte) ARGUMENT (3 Byte) ETX (03 hex)

(2) Error (Abnormal response)

Received command is a non-corresponding command, ‘ERR’ is returned:

STX (02 hex)	ERR (3 Byte)	ETX (03 hex)

Received command cannot be processed (when PON is received when the power is already ON, etc.), ‘XXX’ is returned: