Communication Parameter; Pin Configuration; Communication Data Format - Sony FWD-42PX2 Protocol Manual

1. Communication Parameter

Communication system
Synchronous system
Baud rate
Character length
Parity
Start bit
Stop bit
Flow control

2. Pin Configuration

Display side (D-sub 9-pin)
FWD-42PX2
5 4 3 2 1
9 8 7 6
_ External view _
Pin No. Signal
1 NC
2 TD
3 RD
4 NC
5 GND
6 NC
7 NC
8 NC
9 NC
FWD-42PX2
RS-232C
Asynchronous communication
9600 bps
8 bit
None
1 bit
1 bit
None
Host side (D-sub 9-pin)
Personal computer
5 4 3 2 1
9 8 7 6
_ External view _
Pin No. Signal
1 NC
2 RD
3 TD
4 NC
5 GND
6 NC
7 NC
8 NC
9 NC

3. Communication Data Format

(a) Control (Host Request of Write to Display)
No. Item
1 Header
2 Category
3 Function
4 Data1 (Length)
5 Data2 (Data1)
: :
: :
X DataX
X+1 Check Sum
* Check Sum: The total from No. 1 to No. X, when value exceeds 255,1byte
of data is confirmed the bottom.
* Set the command interval to 500 ms or more when transmitting the
Control command continuously.
* Set the command interval to 500 ms or more when transmitting the same
command (Enquiry) after the Control command.
(b) Enquiry (Host Request of Read to Display)
No. Item
1 Header
2 Category
3 Function
4 Data1
5 Data2
6 Check Sum
* Check Sum: The total from No.1 to No.5, when value exceeds 255, 1byte
of data is confirmed the bottom.
Value
0x8C:Control
0xXX
0xXX
0xXX
0xXX
0xXX
0xXX
0xXX
0xXX
Value
0x83:Enquiry
0xXX
0xXX
0xFF
0xFF
0xXX
1