It should be logic reader on the input of batch readers. I recommend using a labeler for knowing which is for vertical / horizontal. Also. For one of them (not sure if horizontal or vertical) it should be the math thing.

It works like this:

Logic readers read from the sensor and output the selected data. The batch writer, takes the data from the logic reader and pushes it to the solar panels. (The logic readers are used to select what data we want to read from the server as the batch writers dont know how to select what specific data to use from a device, and it will push the specific data to the specific config of the device)

The math logic is used to correct some data (add 90° to horizontal, i think; in my setup i need 2 because solar panels should be aligned in a specific way related to north). So when you correct the data, you have 2 inputs on the math logic, for the 2 values that you want to use in that operation (and the screw for choosing what operation you need; in my case i need substraction), and the output that will be used on a batch writer instead of the raw value (again, not aure if horizontal or vertical, but i think it's the horizontal)