Well, it's sometime later now and my Module and PV Butler still up and running. I have progressed with my own app. I am using RPI 3b with busmod lib and is reading all the info from my Sacolar. its up for 3 weeks and drops my data once a while. Still not sure where the problem is, but I am in the process of coding it to a ESP32. Only need to check the pin connections of the usb to RS485