Pioneer PDP-V402 Technical Manual page 177

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
Personal computer for
control (PC-9800)
RXD 3
TXD 2
CTS 5
GND 7
* Third-party D-sub 9P-D-sub 25P conversion cables are available commercially.
(1) When commands are sent serially (one by one).
STX COMMAND
(2) When groups of commands are sent
STX COMMAND
(3) In the case of commands followed by numbers in the 0-255 range
STX COMMAND
Bad Example 1) Send the <PON> and <POF> commands one by one.
(Allow 3 seconds or longer between commands.)
Bad Example 2)
Send input switching commands <IN 1 - 4> and "AJY"
commands separately. (Allow at least 1.5 seconds after
Bad Example 3) input switching commands <IN 1 - 4> are set before
sending any other commands.)
Plasma display
2
2 TXD
3
3 RXD
2
8 RTS
5 GND
ETX
COMMAND
ARGUMENT
RS-232C adjustment mode
Personal computer for
control (DVS-V)
RXD 2
TXD 3
CTS 8
GND 5
STX=02h ETX=03h
COMMAND ETX
ETX
Plasma display
2
2 TXD
3
3 RXD
2
8 RTS
5 GND
Straight cable
COMMAND 3-Byte (ASCII)
Up to three commands may
be sent at a time.
ARGUMENT : 3-Byte (ASCII)
STX PON AJY CNT
STX POF PON ETX
STX IN2 AJY CNT
note)
ETX
ETX
177