User`s manual

Applilet EZ for HCD Controller
APPENDIX C DMX512 MODE COMMUNICATION DATA
R20UT0435EJ1200 Rev. 12.00 50
Jul 31, 2014
APPENDIX C DMX512 MODE COMMUNICATION DATA
The communication data by DMX512 mode is described below.
DMX communication
Host Machine
(PC, microcontroller, etc.)
Master board
(EZ-0008, etc.)
Target
Target
Target
DMX512 performs communication using the following protocol.
C.1 Protocol Specifications
<1> Packet
One packet is configured of one MTBP, one BREAK, one MAB, 513 frames, and 512 MTBFs.
The first frame is a start code and data is fixed to 0.
BREAK
Frame
(Start code)
Frame
(Channel 1)
MAB
MTBP
MTBF
MTBF
Frame
(Channel 512)
Data width Name
MIN. TYP. MAX.
Level
BREAK 88  s 88  s 176 s Low-level
MAB 8  s 8  s 1 s High-level
FRAME 44  s 44  s 44  s Low-level/High-level
MTBF 0  s – 1 s High-level
MTBP 0  s – 1 s High-level