Pioneer PDA-4002, Technical Manual

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3) Baud rate
4800 bps (possible settings include 1200, 2400, 9600, and 19200 bps)
Notes: Set this value so that the machine's baud rate equals the PC baud rate.
4) Data format
Start : 1-bit
Data : 8-bit
Parity : 0 (no parity)
Stop : 1-bit
5) Connection
6) Protocol
From PC to plasma display
Bad Example 1)
Bad Example 2)
Bad Example 3)
(1) When commands are sent serially (one by one).
STX COMMAND ETX STX=02h ETX=03h COMMAND 3-Byte (ASCII)
(2) When groups of commands are sent
STX COMMAND COMMAND COMMAND ETX
(3) In the case of commands followed by numbers in the 0-255 range
STX COMMAND ARGUMENT ETX ARGUMENT : 3-Byte (ASCII)
Personal computer for Plasma display Personal computer for Plasma display
control (PC-9800) control (DVS-V)
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
* Third-party D-sub 9P-D-sub 25P conversion cables are available commercially.
Send the <PON> and <POF> commands one by one.
(Allow 3 seconds or longer between commands.)
Send input switching commands <IN 1 - 4> and “AJY”
commands separately. (Allow at least 1.5 seconds after
input switching commands <IN 1 - 4> are set before
sending any other commands.)
Up to three commands may
be sent at a time.
note)
Straight cable
RS-232C adjustment mode
3
2
2
3
2
2
STX PON AJY CNT ETX
STX POF PON ETX
STX IN2 AJY CNT ETX