DMX is a light protocol (alternative to DALI). It is used in stage lighting. It can have multiple universes. A house needs typically one universe, since it contains 512 channels. Each channel has 256 steps. Channels can combined to get more fine grained control.
Global parameters
In DMXVariables you can set an IP. This depends on your topology. Multicast works, if the PLC and art-net node share the sub mask.
// unicast: 10.1.1.4
// multicast: 10.1.1.255
// broadcast: 255.255.255.255
In DMX_SEND you can set the universe. 0 is not recommended for art-net. the default is therefore 1
With wireshark you can track your network. ArtNet/DMX has a dedicated parser.
If you work remove you can SSH into a PLC, to check the multicast (in this case 10.1.1.255). Either use this cmdline or add ssh directly into wireshark
ssh [email protected] sudo tcpdump --dont-verify-checksums -i ethX2 -U -s0 -w - 'dst host 10.1.1.255' | "C:\Apps\Wireshark\Wireshark.exe" -k -i -