BenQ MP512 Product Service Manual page 35

<pin assignment for this two end>
Pin Description
1 NC
3 TXD
5 GND
7 RTS
9 NC
Interface Settings
RS-232 protocol
Baud Rate
Data Length
Parity Check
Stop Bit
Flow Control
Software specification
1. Each input character will be echoed.
2. When give ASCII (13), it will echo 0x3E, 0x00. It means projector is ready to accept RS-232
command.
3. If no any command, it should echo 0x0D,0x0A,0x00 after 5 seconds.(5 sec time out)
4. If the command format is illegal, it will echo "Illegal format".
Command Category
Refer to Appendix 2
Pin
2
4
6
8
115200 bps (default)
Changeable settings in User OSD
(9600/19200/38400/57600/115200)
8 bit
None
1 bit
None
Description
RXD
NC
NC
CTS
35
1 1 2 2 3 3 4 4 5 5
6 6 7 7 8 8 9 9