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Daisy Chain Communication
1.Communications setting
Set the same communication settings (selecting from options below) on the
CONTROL terminal for transmitting and receiving side connected with a RS-232C
cable.
Baud rate: 4800 / 9600 / 19200 / 38400 bps
Parity NONE / ODD / EVEN
Data bit: 8 bit (xed)
Start bit: 1 bit (xed)
Stop bit: 1 bit (xed)
2.Commands available only for daisy chain
communication
The projector supports the following commands only for daisy chain.
(1) Control the projector (Set/Increment/Decrement/Execute)
(2) Get the projector’s status (Get)
(3) Get the number of connected projectors
(4) Set the communication Group identication and Communication ID.
(5) Get the communication Group identication and Communication ID.
3.Command format
Protocol
Consist of header data (7 bytes) + command data (6 bytes)
Header
BE + EF + Packet_Type + 06 + Group + ID + Checksum
Data chart
Support Command Packet_Type Group ID
Control the projector ‘83H’ 0~16 0~64
Get the projector’s status ‘83H’ 1~16 1~64
Get the number of connected projectors ‘84H’ 0 0
Set the communication Group
identication and Communication ID
‘85H’ 1~16 1~64
Get the communication Group
identication and Communication ID
‘86H’ 0 0
Daisy Chain Communication
Transmitting side
Recieving side
CONTROL OUT port
in Projector
CONTROL IN
port in Projector
RS-232C cable (Cross)
- (1) (1) CD
RD (2) (2) RD
TD (3) (3) TD
- (4) (4) DTR
GND (5) (5) GND
- (6) (6) DSR
RTS (7) (7) RTS
CTS (8) (8) DTS
- (9) (9) RI
6
7
8
9
1 2 3 4 5
6
7
8
9
1 2 3 4 5
14


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