Fendt 300 Com 3 Arms/3 point hitch control

[Karja]

Fendt Farmer, Vario 200, 300 Hydraulic lift machine modul

I’m currently in the process of setting up a system on a Fendt Farmer. Is there a way that the Arduino can continuously supply power to the corresponding relay when using the hydraulic lifting function? Can I adjust this in the sketch? So far, the Arduino only controls the relay for a few seconds at a time. The Electrohydraulic Lifting Mechanism Control (EHR 4) of the three-point power lift requires constant power for the control to work. Thanks for help in advance!