Communicating over MODBUS to a PowMr Inverter

dhruv_pareek said:

I am using a PowMr 5000 W Inverter (https://powmr.com/products/all-in-one-inverter-charger-5000w-110vac-48vdc) and I had a few problems communicating with the device via modbus. I am unable to get any response messages back from the Inverter despite power wiring and receiving messages from other slave decices. I do not know where to find the following information:

1) At what Baud Rate/UART Connection speed for the inverter operate at
2) What function codes does the PowMr support
3) How to find/set slave address
4) What registers/Coils information is stored at (the map)

Click to expand...

esphome-powmr-hybrid-inverter/docs/registers-map.md at main · odya/esphome-powmr-hybrid-inverter

ESPHome config for various PowMr Hybrid Inverter models. - odya/esphome-powmr-hybrid-inverter

github.com

ThaiTaffy said:

I'm using a baud rate of 2400, I haven't yet managed to configure settings as there's a specific register I'm yet unaware of that controls input of password and disabling password to allow changing of settings remotely. Full list of registers I'm using can be found here:

esphome-powmr-hybrid-inverter/docs/registers-map.md at main · odya/esphome-powmr-hybrid-inverter

ESPHome config for various PowMr Hybrid Inverter models. - odya/esphome-powmr-hybrid-inverter

github.com

Click to expand...

dhruv_pareek said:

Cool thank you! Couple more questions if you are able to answer, what slave-id do you use to communicate with the inverter? Is it just a slave-id of 1?

Also, does this inverter's modbus communicate with Ascii or RTU or TCP?

Click to expand...