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DMX · Art-Net · sACN
DMX universe and address maths, Art-Net and sACN.
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Universe numbering
Universe and address
Absolute channel 1 is the first address of the first universe. grandMA writes universe.address, always counting universes from 1: 2.001 is absolute 513.grandMA (U.AAA)2.001
Absolute channel 513
Universe · address2 · 1
Universe 2 · Address 1
Patch a row of fixtures
Fixtures are laid end to end. One that would not fit in the rest of a universe starts at address 1 of the next, so no fixture is split.This row does not fit in one universe. 2 universes · up to 13 per universe · 5 addresses left empty at universe ends
| # | U.AAA | Addresses | Absolute channel |
|---|---|---|---|
| 1 | 1.001 | 1: 1–39 | 1 |
| 2 | 1.040 | 1: 40–78 | 40 |
| 3 | 1.079 | 1: 79–117 | 79 |
| 4 | 1.118 | 1: 118–156 | 118 |
| 5 | 1.157 | 1: 157–195 | 157 |
| 6 | 1.196 | 1: 196–234 | 196 |
| 7 | 1.235 | 1: 235–273 | 235 |
| 8 | 1.274 | 1: 274–312 | 274 |
| 9 | 1.313 | 1: 313–351 | 313 |
| 10 | 1.352 | 1: 352–390 | 352 |
| 11 | 1.391 | 1: 391–429 | 391 |
| 12 | 1.430 | 1: 430–468 | 430 |
| 13 | 1.469 | 1: 469–507 | 469 |
| 14 | 2.001 | 2: 1–39↵ moved to the next universe | 513 |
Art-Net and sACN
Art-Net's 15-bit Port-Address is Net (0–127), Sub-Net (0–15) and Universe (0–15). Most consoles and nodes number Art-Net from 0 and sACN from 1, so Art-Net 0 = sACN 1. Some line them up 1:1; check the node's web page.sACN = Art-Net +
Default: Art-Net 0 is sACN 1.
Net:Sub:Uni0:0:0
Port-Address (flat)0
0x0000
sACN universe1
239.255.0.1
sACN multicast address
Each sACN universe has its own multicast group, 239.255.high byte.low byte of the universe number. Use it for IGMP snooping and switch debugging.Multicast IP239.255.0.1
sACN universe1
Art-Net 0:0:0 · Port-Address 0 (+1)
Art-Net broadcast address
Art-Net 4 nodes still listen for broadcast. Its own ranges are 2.x.x.x and 10.x.x.x with mask 255.0.0.0; enter the console's IP and mask.255.0.0.0, /8 or 8
Broadcast2.255.255.255
Art-Net primary range (2.x.x.x).
Network2.0.0.0/8
255.0.0.0