Denarius Posted February 8, 2021 Posted February 8, 2021 Hi guys If I call the Axpert Max with the QPIGS command, the PV watts is the same as the inverter screen displays for MPPT 1 and is not the total MPPT. Does anyone know how to find the value of MPPT 2? Quote
Coulomb Posted February 9, 2021 Posted February 9, 2021 (edited) 5 hours ago, Denarius said: Does anyone know how to find the value of MPPT 2? Try QPIGS2. Look it up in a recent protocol manual. I believe that there is one on this forum. Edit: It looks like the MAX has a different QPIGS2 response data format (clever And QPI still returns PI30). Looks like there are only 3 fields: PV2 current, PV2 voltage (values less than 60.0 V display as zero), and PV2 power. Edit 2: That's with firmware version 90.11 (50.00 for the 120 V version). I expect the earlier firmwares to be the same, but haven't checked. Edited February 9, 2021 by Coulomb Quote
Denarius Posted February 9, 2021 Author Posted February 9, 2021 (edited) Thank you @coulomb, that was exactly what I was looking for. Your knowledge of the internals of these inverters is amazing. (09.4 128.7 01213 I guess if you have multiple Axpert Max in parallel, you can only read the MPPT2 of inverter you are connected to. Edited February 9, 2021 by Denarius grammar Quote
Denarius Posted February 28, 2021 Author Posted February 28, 2021 On 2021/02/09 at 2:05 PM, Denarius said: I guess if you have multiple Axpert Max in parallel, you can only read the MPPT2 of inverter you are connected to. @coulomb Is this the case? Is there no way to read MPPT2 of the inverters not connected directly via USB? Quote
Coulomb Posted March 1, 2021 Posted March 1, 2021 (edited) On 2021/03/01 at 12:01 AM, Denarius said: @coulomb Is this the case? Is there no way to read MPPT2 of the inverters not connected directly via USB? Oh. Yes, it looks that way. Seems quite an oversight. Other models appear to have a QP2GSn command, for reading the PV parameters for machine n. Or at least, that's what is documented in the protocol manual. Maybe only the older dual- and triple- MPPT models implement this command. Edited March 1, 2021 by Coulomb Removed last sentence, which in retrospect was irrelevant. Quote
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