ICP DAS USA DGW-521 User Manual page 31

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2. Format of the DALI command word
Low byte: command code
High byte: DALI address
Bit 0: 0-> the low byte is direct lamp power value, 1-> the
low byte is command code
Bit 1 ~ 6: short address when bit 7 is 0
Bit 1 ~ 4: group address when bit 7 is 1
Bit 1 ~ 7: all set to 1 for broadcast command
DGW-521 User Manual, Rev. A1.0 31