Downloaded from Projector.com
31
3M
™
Multimedia Projector MP7640
© 3M IPC 2000
Section 9: Appendix
RS-232C Communication
1.
Turn off the projector and computer power supplies and connect with the RS-232C cable.
2.
Turn on the computer power supply and, after the computer has started up, turn on the projector
power supply.
Communications Setting
19200 bps, 8N1
1 Protocol
Consist of header (6 bytes) + command data (6 bytes).
2 Header
BE + EF + 03 + 06 + 00 + C CRC_high
CRC_low: Lower byte of CRC flag for command data (6 bytes).
CRC_high: Upper byte of CRC flag for command data (6 bytes).
3 Command Data