Raspberry Pi Classic monitor using MQTT

[ClassicCrazy]

Take a look at this - was a bit different question about SMA but I think the same principle applies to your situation.
http://midniteftp.com/forum/index.php?topic=5000.msg46537#msg46537

Larry

[ClassicCrazy]

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Re: One Classic 250 MNGP's mirrors the other Classic 250
« Reply #34 on: October 01, 2020, 11:44:59 AM »

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Ok the issue with addressing the classics using the local app is it does not address the MNGP. You dont want to use the local app for addressing on classics only classic lites.


and this

Actually to address the classic is done from the home screen. On page 21 of this manual

http://www.midnitesolar.com/pdfs/Classic_ClassicSL_Manual_10-001-1_REV_L.pdf

To address a Classic simply use the MNGP that is plugged into that Classicor plug the MNGP into that Classic and hold the LEFT ARROW keydown and tap the UP or DOWN ARROW key. The normal default address is 10 so going up will take you to 11 and down to 9. When you get to the unused address you want for that Classic, hold the LEFT and RIGHT ARROW keys for a second until “Data Sent and Saved” shows up. Now this Classic has been re-addressed to the new address.