Rs232 communication protocol / codes, Host system target system, External communication protocol – BenQ PB6200 User Manual
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8. RS232 Communication Protocol / Codes
External Communication Protocol
External communication protocol include two parts
A. setup connecting, B. send command.
BenQ default Serial Port :
Baud Rate: 19200
Parity: none
Data bits: 8
Stop bits: 1
Flow Control: none
A. Setup Connecting
A typical Packet transaction session is shown in Figure 1
PC BenQ Projector
Figure 1
Host System Target
System
Packet to Target =>
<= ACK
<= Packet to Host
Packet to Target =>
<= ACK
<= Packet to Host
Packet to Target =>
a
c
e
d
b
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