RS-232C Adjustment Mode

5.5.2 Interface

1) Connector

D-sub 9 pins (male)

2) Pin layout

 

1

5

 

 

 

Pin No.

Signal

Pin No.

Signal

 

1

NC (not connected)

6

NC (not connected)

 

2

TxD (Transmit Data)

7

NC (not connected)

 

3

RxD (Receive Data)

8

RTS (Request To Send)

 

4

NC (not connected)

9

NC (not connected)

 

5

GND

 

6

9

 

 

 

3)Baud Rate

9600 bps (standard)

(switch-able to 1200, 2400, 4800, 19200, 38400 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 to be extended over a long distance, a slower baud rate is recommended.

4)Data format Start: 1 bit Data: 8 bit Parity: 0 (no parity) Stop: 1 bit

5)Connection

Control PC

 

Plasma Display

Control PC

 

Plasma Display

(with D25 serial port )

 

(PDP-504CMX/50MXE1/50MXE1-S)

(with D9 serial port)

(PDP-504CMX/50MXE1/50MXE1-S)

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.

6)Protocol

From the computer to the display

(1) When sending one command at a time:

Straight Cable

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

(2) When numerical direct commands are possible:

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

COMMAND: 3 Byte (ASCII)

ARGUMERNT: 3 Byte (ASCII)

(3) Echo back

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

When the received command is a numerical direct effect command, numerical data is returned.

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

When the received command is non-corresponding command, ‘ERR’ is returned.

STX (02 hex)

ERR (3 Byte)

ETX (03 hex)

 

 

 

When it is determined that the received command cannot be processed (when PON is received when the power is already ON, etc.), ‘XXX’ is returned.

STX (02 hex)

XXX (3 Byte)

ETX (03 hex)

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