Specifications

127
<Ver. 2.1>
5.3.2 Interface
1) Connector
D-sub 9 pin
2) Pin assignment
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
Note) For the following commands, only the first command is valid. Other commands are ignored.
Example 1) STX PON AJY CNT ETX
Example 2) STX POF PON ETX
Example 3) STX IN2 AJY CNT ETX
(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)
COMPUTER (PC-98) Plasma display COMPUTER (IBM PC) P lasma display
RXD 3 2 TXD RXD 2 2 TXD
TXD 2 3 RXD TXD 3 3 RXD
CTS 5 8 CTS CTS 8 8 CTS
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)
PIN NO. Symbol Signal NAME
2 TXD Transmitted Data
3 RXD Recieved Data
8 CTS Clear To Send
5 GND Signal Ground
Straight cable
Outer control by RS232C