[SML] Dumb question about DMX protocol

[Mt. Angel Performing Arts Center]

Thanks Paul!

 From that I presume that if I have devices somewhere between 0 and 312 
I also have to send them correct data or they will revert to level 0, so 
I'm sending a buffer full of valid data each frame.

Or is there a standard DMX 'ignore' or 'null' value?

Carla

There is only one war, and it's not the rich against the poor, the 
blacks against the whites, the Federation against the Borg, or the 
Democrats versus the Republicans. It's those of us who aren't complete 
idiots against those of us who are. - Bill Kruse


On 11/29/2015 8:00 AM, Paul Marsland via Stagecraft wrote:
> Hey Carla -
>
> In DMX, yes, you need to send zeros from 1-311 and your intended value
> to 312.
>
>
> On Sunday, November 29, 2015, Mt. Angel Performing Arts Center via
> Stagecraft <stagecraft at theatrical.net
> <mailto:stagecraft at theatrical.net>> wrote:
>
>     Hi all,
>
>     I have this wild hare of an idea about 'rolling my own' DMX receiver
>     / LED units for an upcoming project.
>
>     I probably should just buy the spec and go from there, but the
>     question I have is pretty simple and I'm sure there's an answer on
>     the list.
>
>      >From Wikipedia, "All slots following the start code contain
>     control settings for slave devices. A slot's position within the
>     packet determines the device and function to be controlled, while
>     its data value specifies the control set point."
>
>     So does that mean what it appears to mean? If I assign a receiver to
>     slot 312 and only want to talk to receiver 312 that I have to send
>     null data to 0 through 311 to get there, or can the data be double
>     byte formatted "address;data" and I can decode it device by device
>     as needed?
>
>     Like I said, it's probably in  the spec but it's Sunday morning and
>     I'm lazy. . . .
>
>     Carla
>
>       Shouldn't there be more to a circus than the clowns?
>
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>
> --
> Paul Marsland
> +1 919-239-0551
>
>
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