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Old July 19th, 2013   #3
Task Group Member
Join Date: May 2010
Location: San Franciscio
Posts: 57

I agree with Eric here (sub-devices only), although I don't think the standard calls this out.

It does however say:

"All sub-devices shall report an identical list for SUPPORTED_PARAMETERS. This list may be different than that of the Root device."

So you shouldn't see "NACK Unknown PID" but you may trigger other NACK conditions.
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