Credits; Appendix - Cameo XNODE 8 Manuel D'utilisation

CREDITS

LwIP
This product includes parts of lwIP which is licenced under the BSD licence:
Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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ART-NET
Art-Net™ Designed by and Copyright Artistic Licence Holdings Ltd

APPENDIX

REPRESENTATIONS OF ART-NET PORT ADDRESSES
According to the Art-Net 3 specification, the address of an Art-Net port consists of three parts: The Art-Net net, sub-net and universe
number. The Art-Net universe and sub-net number both have a value between 0 and 15 (4 bits). Many controllers combine these values to
the sub-uni number, resulting in a value between 0 and 255 (8 bits), with the sub-net part occupying the more significant digits. Thus, the
sub-uni can be calculated with the formula 16 x sub-net + universe = sub-uni.
The Art-Net net number was added in Art-Net 3 and has a value between 0 and 127 (7 bits). So, when working with controllers using Art-Net
I or Art-Net II, the Art-Net net must be set to 0.
The Art-Net net, sub-net and universe can be combined to a 15-bit port address with values from 0 to 32767, as shown below.
Bit Digit
Subdivided Representation
Alternative Representation
15-bit Port Address Rep.
For the instances where the Art-Net net number is 0, the 15-bit port address is equivalent to the sub-uni. The table below gives an overview
of the entire Art-Net 3 address space and how it is converted to a 15-bit port address.
14 13 12 11 10
Net (0 - 127)
Net (0 - 127)
9 8 7 6 5 4
Sub-Net (0 - 15)
Sub-Uni (0 – 255)
(0 – 32767)
3 2 1 0
Universe (0 - 15)
29