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MiG-41 / Modbus-GoodWe-DT

Protocol description for modbus Goodwe DT inwerters
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Control Map #1

Open thalesmaoa opened 3 years ago

thalesmaoa commented 3 years ago

Hello, do you have the control address? I need to disable MPPT of my inverter ir control the output power.

MiG-41 commented 3 years ago

Any control addressees are welcome :)

rinivanzetten commented 3 years ago

Hello, Tonight i came across the full specs of the goodwe modbus protocol. Have not checked it already, but it looks promising.

You can download it at : https://www.scribd.com/document/432906859/Modbus-PROTOCOL-Grid-Englishx

You need to subscribe. But first month is free....

thalesmaoa commented 3 years ago

After I've got your first answer, I've contacted Goodwe support. However, they've made me sign a NDA. I will check how I can contribute without violate NDA.

MiG-41 commented 3 years ago

@rinivanzetten , Document from ScriBD looks prommising. In free time i'll check this.

@thalesmaoa , i also talked with local GoodWe service. He first said ,that he will check it ,becouse he have acces to GoodWe library , but later he said ,that he is not able to proviede it , since it is not public ,an he will be charged ,if some data will be published ( so also like NDA).

MiG-41 commented 3 years ago

I was able to set power factor to -0,8 via command: F7 10 01 01 00 01 02 00 14 98 EA Values for 7 & 8 bytes are: 00 14 - -0,8 00 13 - -0,81 00 12 - -0,82 00 11 - -0,83 00 10 - 0,84 00 0F - -0.85 00 0A - -0,9 00 01 - -0,99

00 64 - 1

00 63 - +0,99 00 5A - +0,9 00 50 - +0,8

thalesmaoa commented 3 years ago

@MiG-41, that worked for me as well. Setting power output is one address bellow, however, I can't that to work.

F7 10 01 00 00 01 00 HB LB CRC

Reconnecting time is 00 01 add.

MiG-41 commented 3 years ago

I havn't tried , but i belive you miss one byte ,with is amount of data and have value 02 : image

So it should be something like this : F7 10 01 00 00 01 02 00 LB CRC CRC

So i.e. setting 10% of power i assuming it should be:

F7 10 01 00 00 01 02 00 0A 19 33

thalesmaoa commented 3 years ago

You are right, but it was only miss typo. I use nodered-modbus and the message seems to be fine since the inverter reply. However, I can't understand why its taking effect for power factor, but not for power limiting. Please, let me know if you try it.

MiG-41 commented 3 years ago

Problem is ,that when i come back home inverter is already down. Also generally days are foggy and also to see an influance would be hard. But you are able to adjust manualy on display menu this power limitation? Can you read value from that adress 0100 each time when you change it in menu ? Then just send this value , maybe it is other logic then normal 1-100%...

thalesmaoa commented 3 years ago

I tried. It only return zeros.

thalesmaoa commented 3 years ago

I found the problem. HIM does not update but power is limited. Looks like a simple bug.

MiG-41 commented 3 years ago

So after command inverter limiting power , but read value from 0100 adress not changing ?

thalesmaoa commented 3 years ago

It is changing. The value that I write into FC:16, it returns. However, it does not update on screen neither inform that the value is limited by the one shown in screen.