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STX ID <PON> <AJY> <CNT> ETX
STX ID <POF> <PON> ETX
STX ID <IN2> <AJY> <CNT> ETX
RS-232C Adjustment Mode
5.5.2 Interface
1) Connector
D-sub 9 pins
2) Pin layout
(NOTE) Plasma is a DCE device.
3) Baud Rate
4800 bps (standard)
(switch-able to 1200, 2400, 9600, 19200 bps)
(NOTE) Set the baud rate to match that of the computer presently in use. Moreover, in the case that the RS-232C
cable is very long, we recommend that you make the baud rate lower.
4) Data Format
Start: 1-bit
Data: 8-bit
Parity: 0 (no parity)
Stop: 1-bit
5) Connection
(NOTE) As computer manufactures may not use the same pin assigments. In case of communication difficalties,
please check pin functions not just pin numbers.
6) Protocol
From computer to plasma display
Straight Cable
* D-sub 9-pin/D-sub 25-pin conversion tables are now available on the market.
(NOTE) • Transmit <PON> and <POF> commands
one by one. (Allow an interval of three or
more seconds between commands.)
• Transmit an input switching command (IN
1-4) and <AJY> command, allowing
sufficient time between them.
• Allow an interval of approximately Four or
more seconds between input switching
commands (IN 1-4).
(1) When transmitting commands individually
STX (02 hex) ID (2 Byte) COMMAND (3 Byte) ETX (03 hex) COMMAND 3 Byte (ASCII)
ARGUMENT 3 Byte (ASCII)
(2) When transmitting commands in batches (up to max. 3 commands) ....
(NOTE)
STX (02 hex) ID (2 Byte) COMMAND (3 Byte) COMMAND (3 Byte) COMMAND (3 Byte) ETX (03 hex)
(3) When transmitting direct numeric commands
STX (02 hex) ID (2 Byte) COMMAND (3 Byte) ARGUMENT (3 Byte) ETX (03 hex)
Error Example 1)
Error Example 2)
Error Example 3)
5
96
1
Pin No.
Signal
1 NC (not connected)
2 TxD (Transmit Data)
3 RxD (Receive Data)
4 NC (not connected)
5 GND
6 NC (not connected)
7 NC (not connected)
8 RTS (Request To Send)
9 NC (not connected)
Control PC PLASMA DISPLAY Control PC PLASMA DISPLAY
(with D25 serial port ) (PDP-502MX) (with D9 serial port) (PDP-502MX)
RXD 3 2 TXD RXD 2 2 TXD
TXD 2 3 RXD TXD 3 3 RXD
CTS 5 8 RTS CTS 8 8 RTS
GND 7 5 GND GND 5 5 GND
2
2
3
2
3
2