User`s manual
Applilet EZ for HCD Controller
APPENDIX D DALI MODE COMMUNICATION DATA
R20UT0435EJ1200 Rev. 12.00 53
Jul 31, 2014
<2> Frame
Forward frame
This is a frame used when transmitting from the master to a slave. A frame consists of 19 bits.
Figure D-2. Forward-Frame Structure
a
1 bit 1 bit 6 bits
b c d e f
1 bit
8 bits
8 bits 2 bits
a: Start bit
This indicates the start of the frame. It is always the same waveform as “1”.
b-d: Address byte
This specifies the transmission destination of the frame.
e: Data byte
This specifies a command.
f: Stop bits
These indicate the end of the frame. These are fixed to the high level.
Backward frame
This is a frame used when transmitting from the slave to a master. A frame consists of 11 bits.
Figure D-3. Backward-Frame Structure
a b c
1 bit 8 bits 2 bits
a: Start bit
This indicates the start of the frame. It is always the same waveform as “1”.
b: Data byte
This replies to the master.
c: Stop bits
These indicate the end of the frame. These are fixed to the high level.