Open iDontWantAUsername opened 1 year ago
bohdan-s
commented
1 year ago Hi, LVL3 scans EVERY register. So out of bounds are expected. You could ask Sungrow support for the modbus document for your register and I can update the official. You could also let me know how many MPPT / Strings your model supports and I can add support at LVL 2 as it should be. lvl 1 = standard registers, lvl 2 = all your model supports (when added). Lvl3 = all known registers, supported or not.
iDontWantAUsername
commented
1 year ago Hi, That makes sense.
The SG8.0RS supports 3 Strings.
I will drop SunGrow an email to get the full supported modbus registers.
Thanks, Richard
iDontWantAUsername
commented
1 year ago It looks like the issue could be that SG8.0RS has been added to the string_3_voltage, string_3_current registers when in-fact it outputs to mppt_3_voltage, mppt_3_current.
I have sent SunGrow a message so will update if they return a full list
bohdan-s
commented
1 year ago MPPT and String are 2 different things. for example I have 2 MPPT, 3;3;2 strings for a total of 8 strings. The PV document had all the models and how many they have. Hybrid models don’t seem to use MPPT just strings.
iDontWantAUsername
commented
1 year ago Ahr ok, so it just looks like the SG#.0RS Inverters may be missing their MPPT_3 resources, these have 3 MPPT and 1 default string per MPPT.
iDontWantAUsername
commented
1 year ago Latest ModBus mappings attached, it looks like it is a few years old - it does have the a list of how many MPPT channels each inverter has in the appendix 5. I know it is a big document - would you like me to extract any information from it to help?
TI_20211225_Communication Protocol of PV Grid-Connected String Inverters_V1.1.40_EN.pdf
Hi, I know this inverter isn't official supported but it seems to mostly work however i do get an Index Out of Range error when returning all Level 3 - am using this to get the MPPT outputs to check the output from each array (and this isnt' returned with level 2 - probably due to the unsupported inverter.
Log file is:
Is it possible to look into the Index error and/or add SG8.0RS as a supported inverted? Let me know what information you need if this is to become supported.
I am using Docker-Compose if that make a difference to anything.
Thanks!