Modbus control of import and export power

[HarmvandenBrink]

Would it be possible to control the import and export power of the DEYE inverter using Modbus?

Can we do this per phase, or as total amount?

Could you help me out with this, you’re sort of my last resort.

[githubDante]

It's doable via the following registers:

• MaxChargeAmps
• MaxDischargeAmps
  or
• GridExportLimit

All are available in the WritableRegisters class. The latter is even mentioned at the bottom of the README.

[HarmvandenBrink]

Sorry that I missed that. I thought it are limits that are set, not actual set points for the inverter

[tonsmets]

I would like to know the same thing. With other systems I am used to writing a power setpoint (either a positive or negative value depending on discharge/charge).

So I think my question is: if I just want to charge or discharge the battery right now with a certain amount of power, what commands do I need to send? This seems like a very basic functionality but I cannot find the correct commands/steps when looking at the documentation.

[githubDante]

So I think my question is: if I just want to charge or discharge the battery right now with a certain amount of power, what commands do I need to send? This seems like a very basic functionality but I cannot find the correct commands/steps when looking at the documentation.

You should use the programmer with the correct time interval, power & SOC settings. Also make sure that the TimeOfUse (register 146) shows Enabled and at least the current day of the week is also in the list.

TimeOfUse example from deye-read:

[                   Sell_Time_Of_Use]: ['TimeOfUse - ENABLED', 'TimeOfUse - MONDAY', 'TimeOfUse - TUESDAY', 'TimeOfUse - WEDNESDAY', 'TimeOfUse - THURSDAY', 'TimeOfUse - FRIDAY', 'TimeOfUse - SATURDAY', 'TimeOfUse - SUNDAY'] 

Edit: If you want to charge the battery, the SOC value in the programmer must be set above the current battery SOC value and vice versa if you want discharge the SOC in the programmer must be set lower than the current battery SOC.