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RDM Interpretation Questions Discussion and questions relating to interpreting and understanding the E1.20 RDM Standard.

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Old October 18th, 2009   #1
berntd
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Join Date: Jan 2008
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Default PRESET_PLAYBACK

Hello,

if the device does not support PRESET_PLAYBACK_ALL (table A-7)
should it NACK with DATA_OUT_OF_RANGE or ACK and ignore?

Likewise, if the device dioes not support the level setting of this PID, should it NACK with DATA_OUT_OF _RANGE for value other than 0sFF or ACK and ignore?

Kind regards
Bernt
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Old October 18th, 2009   #2
ericthegeek
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> if the device does not support PRESET_PLAYBACK_ALL
> should it NACK with DATA_OUT_OF_RANGE or ACK and
> ignore?

I'd vote for a NACK, then the controller knows it was received and explicitly rejected.

> if the device dioes not support the level setting
> of this PID, should it NACK with DATA_OUT_OF _RANGE
> for value other than 0sFF or ACK and ignore?

For most dimmers, I'd probably ACK the request and ignore the level (treat it like 0xFF). I think either behavior is acceptable though.
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