S5-GR1P5K ModBus problems with holding registers about ginlong-solis HOT 4 OPEN

Hm, strange. Seems to be a general ModBus issue with this model and not specific to this project.

I suggest to contact Solis support e.g. for an updated inverter firmware.

from ginlong-solis.

I'll leave this issue open for a while, please get back if you make any progress.

from ginlong-solis.

You're using the inv.yaml for the S5-GR1P5K, right?
INV type inverters do not have any registers in the ten-thousands range, to my knowledge.

The inv.yaml has some existing logic to read and set the time (line 355) which works perfectly fine here. Try to de-adjust the inverter time via the LCD display, the yaml will correct it after some time.

from ginlong-solis.

Yep, that's what I've been using for the past few months, however the inverter time never got set correctly during this period.

I found out today that all holding registers in the 3000 range (including time, limit output power, and working mode were not sending back data (which, for the time lambda means the inverter time never gets set either), and the above error was being printed.

Unsure if directly writing to the holding register(s) would work, I haven't tried this.

from ginlong-solis.