Hi Chris,

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It’s been a very long time since I looked at these AVRs, but I wrote my own module back in the 2010-2013 timeframe. At that point, the MVMAX response was not defined in the protocol docs but it was returned most of the time when the AVR sent an MV response. It was the volume limit set in the AVR and it did not change unless you changed the setting in the AVR. It could only be 1 of 4 values (60, 70, 80, or 99=off). I used it so that I could provide volume feedback as a percentage of the volume limit.

IIRC, the Crestron module at the time did not look specifically for MVMAX. In response processing, it checked for the MV command and then skipped response processing if the next character was an M. This prevented erroneously processing the MVMAX response.

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What is the “weirdness” in the module’s volume feedback? ?Since older modules with older AVRs ignored MVMAX, something may have changed in how the module deals with it. I have not looked at the Denon AVR-3313 v1.1 module, though I will if it is of any use to you.

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Based on what you’ve seen, the AVR may not be sending the correct value back in MVMAX. Since it is off, I would have expected 99. You could try setting a limit to see if it then sends back the correct value and does that change the “weirdness” in volume feedback. According the 7015 user manual, the volume limit can now be set to any volume between 60 and 80 or off and it appears that the value can now be 3 digits.

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I’m surprised at how much I I remember about the device after a relative quick look. ?

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Dave

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