¿ªÔÆÌåÓýThis may be the expected behavior since sACN is, essentially, an encapsulation of DMX over IP and DMX is designed to be a single-master/multiple-slave topology where one and only one device must be aware of the current state of the universe, and DMX on RS485 just constantly loops sending the values of channels 1-512 in a loop at 230,400 baud. ? It appears sACN has embraced that behavior by the sACN packet consisting of a header followed by all 512 bytes (addresses) and at least from the documentation I¡¯ve found there is no way to not send the entire universe / update a single channel which would be a little antithetical to the design, potentially allowing individual channels to get out of sync with the master¡¯s view of the state of the universe. ? (In a quick search I haven¡¯t come across a comprehensive discussion of the protocol implementation so there may be a different protocol version that supports a per-channel update that I haven¡¯t come across¡) ? If the player has an input capability that you can then apply (highest/lowest/last)-takes precedence logic to that would likely be the best bet allowing the player to maintain knowledge of the state of the universe similarly to how you may approach things with a CueServer for example. Similarly if there¡¯s another device that can act as a sACN merger. Or if possible the simplest option may be to move Crestron-controlled loads to a different universe than the player-controlled loads. ? Lincoln ? -- Lincoln King-Cliby Commercial Market Director ? ? ? ? ? From: [email protected] <[email protected]>
On Behalf Of Thorsten K?hler
Sent: Monday, April 14, 2025 1:53 PM To: [email protected] Subject: [crestron] Alternativce SACN module ? Hi, ? I?m using the ?SACN SenderDirectSockets¡± module from the SIMPL device database to control an Enttec Ethergate Artnet/SACN to DMX gateway. In general, it works. However, it seems as if the module sends out all 512 channels, even if I change only one of them. This is very unfortunate, as I?m using an Enttec S-Play mini to send out prerecorded scenes to my fixtures via the Ethergate in parallel to the Crestron processor. ? Is there any alternative to SACN module (Artnet would be OK as well) available that sends out only the values for the DMX channel that has actually changed? ? Thanks, Thorsten |
