Hi Everyone!
I’m new to Victron and Node-Red, so my apologies if these questions have been asked several times already, but i can’t find the answers i need and am stuck at this point
To paint the picture:
I am an intern at company that places small windmills for farmers so that they have their own source of power. I have little to no experience with victron, and got the following project:
Due to the laws in the country where I work, farmers aren’t always allowed to feed back into the grid when their grid connection exceeds 80A. This usually isn’t a problem because the vast majority of farmers consume all their own energy and therefore don’t feed anything back into the grid. This farmer is an exception because he’s a chicken farmer. A chicken farm’s cycle consists of 7/8 weeks of operation, after which the chickens are required to be out of the barn for a week. This means the farmer feeds back a huge amount of energy into the grid once per cycle. We want to use an Eastron SMD630MCT to determine whether it’s feeding back into the grid. The problems I’m having aren’t so much with the connection, but more with the programming. This has to be done in Node Red with Modbus.
I connected these two components from the Cerbo GX using the Victron RS485 to USB cable. However, I can’t figure out how to retrieve this data correctly, either in Victron itself or in Node-Red. I know the meter is working because it displays the correct values.
My question is as follows:
How do I retrieve this data in Node-Red (which settings do I need to enter in the Cerbo, on the meter, and in my flow) and how do I translate this into a readable value? As long as I have the values in a human-readable format, I should be fine, but I don’t understand how to establish this connection. The existing tutorials for the Modbus library aren’t helpful either.
Of course i don’t expect anyone to ‘do the work for me’ but i need some pushes into the right direction.
Thanks in advance!
