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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 identication and Communication ID.
(5) Get the communication Group identication 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
identication and Communication ID
‘85H’ 1~16 1~64
Get the communication Group
identication 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