Shownet Universes

Questions on Palette and Light Palette operation and features
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bnortin
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Shownet Universes

Post by bnortin » Sat Apr 14, 2012 11:49 pm

I've been working with Shownet for about 6 years now, and just now started dealing with Art-Net. I'm curious about Shownet network details based on something I read in the Art-Net 3 communication standard. According to the Art-Net document, it is capable of transmitting 40 universes when broadcast is used, but when unicast is used the number of universes increases based on whether it is a 10BaseT, 100BaseT or 1000BaseT network.

So my question is: Would Shownet be considered broadcast or unicast (still new to this, so any info explaining the difference would be a BIG help), and is the number of universes that Shownet can transmit affected at all by the physical layer of the network?

Ex: Would it be worth purchasing a gigabit network switch the next time I upgrade, or will a standard 10/100 network switch be just as functional?

Thanks.
Bryan Nortin
Electrician - Miller Outdoor Theatre - Houston, TX
ETCP Certified Entertainment Electrician #1619
Light Palette VL 10.8.8
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BobbyHarrell
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Re: Shownet Universes

Post by BobbyHarrell » Mon Apr 16, 2012 8:22 am

I'm actually don't remember if it's broadcast or not but it does have a coded limit and is not subject to a floating ceiling.
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gooze
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Shownet Universes

Post by gooze » Tue Apr 17, 2012 8:39 am

Show net is broadcast. It's explained in the manual to the 520 if I remember well. I will try to find it.
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gooze
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Shownet Universes

Post by gooze » Tue Apr 17, 2012 8:52 am

From the Pathport manual

Ethernet protocols are used to multiplex DMX data over Ethernet networks, largely to circumvent control channel limitations inherent in the DMX standard. The Pathport Quattro supports the most widely accepted.
Pathport Protocol: A broadcast protocol developed by Pathway Connectivity and implemented by a variety of console manufacturers.
ArtNet: A broadcast protocol developed by Artistic Licence. Its free distribution has made in popular with media server manufacturers. Because this is not a standard, some implementations may not work with others.
Strand Shownet: A proprietary broadcast protocol developed by Strand Lighting and used exclusively in Strand lighting consoles.
ANSI E1.31 streaming ACN (sACN): A multicast industry standard developed and maintained by the Technical Standards Program of the Entertainment Services and Technology Association (ESTA). The standard is available for a nominal cost from ESTA. This standard provides the DMX512 data transport for the separate ANSI E1.17 ACN (Architecture for Control Networks) industry standard.
sACN is the transport used by ETC Net3. The Quattro is fully compliant with Net3, and will seamlessly receive either Final Draft 20, or the ANSI approved versions of sACN.
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Re: Shownet Universes

Post by MattKlasmeier » Tue Apr 24, 2012 11:02 am

As stated in several post Shownet is a broadcast protocol. The 500 series did have a way that some of the universes could be routed to a different Ip addresse but the Palette does not have this capability. If I remember correctly Shownet is capable of 36 universes of DMX. In one of the recent Palette updates Shownet was increased to 64 universes. Currently none of the Strand nodes accept the expanded universes. The Pathport nodes do if they are running current software.

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Kuni
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Re: Shownet Universes

Post by Kuni » Wed Apr 25, 2012 12:00 pm

ShowNet was a proprietary Broadcast Protocol. It works with Netmask 255.255.255.0 and Strand use the Network protocol to transport a "little" more than DMX (Serial, Paralell, Video and Analog Signals). In the last version of the Networkers it was possible to have a "simpel " DMX Routing with Priority of the different DMX-Universes in different Netmasks:
----
# Network DMX slot range IP addresses: (user-edited)
# 0.0.0.0 means use default of subnet broadcast
# The 4 ranges relate to the 4 ranges in Console Setup.
net_dmx_slot_range_1_addr = 0.0.0.0
net_dmx_slot_range_2_addr = 0.0.0.0
net_dmx_slot_range_3_addr = 0.0.0.0
net_dmx_slot_range_4_addr = 0.0.0.0
----
And yes, in the end we work with 64 Universes over Ethernet and this works also with all Nodes (if they are correct installed and configured).
So, in end a 100MBit Network was more than enough for using ShowNet but today with ArtNet it is not a really bad idea to have a 1GBit Network as a Backbone in the topology of the Network. May be the "arms" of the Network are 100MBit, but if somebody use more than 4 ArtNet Universes than 1GB is a better solution for the Network. And the Prices are not so expensive today for that kind of Stuff than in "the old days".
............kuni................................
pimpedPalette VL16, Soft V10.8.5

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bnortin
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Re: Shownet Universes

Post by bnortin » Wed Apr 25, 2012 12:13 pm

Thanks for all the info, this helps a lot. I have a 10/10/1000 switch that the consoles and the PCs on the network are connected to, I was just wondering if my next switch should be the same for the nodes to connect, but it sounds like a 10/100 switch will work fine.
Bryan Nortin
Electrician - Miller Outdoor Theatre - Houston, TX
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Re: Shownet Universes

Post by MattKlasmeier » Wed Apr 25, 2012 1:59 pm

I'm partial to the Pathport nodes for a facility that may see consoles other than a Palette. They support most of the major protocols Artnet, Shownet, Pathport, ETC Net 2 (output only), E1.31, and ACN.

I personally don't know if it is worth upgrading the switch unless you are looking at large quantities of universes, like media servers or large LED walls. Beside the switch you also have to have the appropriate wiring to take advantage of the increase in bandwith.

Brief description of Uni-cast and Broadcast.
http://www.networkguruz.com/networking- ... multicast/

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Re: Shownet Universes

Post by TaineGilliam » Tue May 01, 2012 2:13 pm

Pathport and e1.31 are actually multicast. The ports and addresses used are well documented elsewhere.

Originally artnet was broadcast but there are unicast enhancements in some products - not Palette. Some artnet gear will restrict the up address range allowed.

Shownet is indeed broadcast. It is limited to 32 universes in Strand gear but capable of up to 64 universes with Pathport nodes. The 520 series and some of the sn10x series did support unicast Shownet but it was rare. As for the netmask in Shownet, different gear handles this differently. Palette recently made a change to "honor" the netmask of the console.

Kinetic is both unicast and broadcast. Palette supports only the broadcast flavor. Most CK gear uses unicast.

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