Daisy Chain Communication
Daisy Chain Communication
Transmitting side
1 2 3 4 5
6 7 8 9
Recieving side
1 2 3 4 5
6 7 8 9
CONTROL OUT port | |||||
in Projector | - (1) |
| (1) | CD | |
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| RD (2) | (2) | RD | ||
| TD (3) | (3) TD | |||
| - (4) |
| (4) | DTR | |
| GND (5) |
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| (5) GND | |
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| - (6) |
| (6) | DSR | |
| RTS (7) | (7) | RTS | ||
| CTS (8) | (8) | DTS | ||
| - (9) |
| (9) | RI | |
1.Communications setting |
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CONTROL IN port in Projector
Set the same communication settings (selecting from options below) on the CONTROL terminal for transmitting and receiving side connected with a
Baud rate: 4800 / 9600 / 19200 / 38400 bps Parity NONE / ODD / EVEN
Data bit: 8 bit (fixed)
Start bit: 1 bit (fixed)
Stop bit: 1 bit (fixed)
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 identification and Communication ID.
(5)Get the communication Group identification 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 |
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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 | ‘85H’ | 1~16 | 1~64 |
identification and Communication ID |
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Get the communication Group | ‘86H’ | 0 | 0 |
identification and Communication ID |
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