Comments (5)
OK, so you have connected the inverter with your laptop with a usb-rs485? What program do you use to read data? What do you mean that you get nothing?
from growatt2mqtt.
there is no response from the MIC when I send a query
from growatt2mqtt.
Well, it is hard to tell from here. Few obvious questions:
- MIC is running/powered?
- Did you set the communication to 9600 baud, 8, N, 1? Slave ID = 1? Did you pick the correct COM port?
- Try swapping the A and B wires
- The USB and serial is close to the inverter?
- You are reading input registers, right?
- You are reading a few, like address 0 quantity 5?
from growatt2mqtt.
Well, it is hard to tell from here. Few obvious questions:
* MIC is running/powered? * Did you set the communication to 9600 baud, 8, N, 1? Slave ID = 1? Did you pick the correct COM port? * Try swapping the A and B wires * The USB and serial is close to the inverter? * You are reading input registers, right? * You are reading a few, like address 0 quantity 5?
All above = yes.
I think it is a hardware defect :-(
from growatt2mqtt.
That is also possible. It would be a good idea to test with another USB to RS485 adapter.
from growatt2mqtt.
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