S7-1500 to Raspberry PI (HMI)

[CQQKI3Z]

Hey there,
I'm doing a project where the Raspberry should visualize a HMI-Display with two containers and some valves from a S7-1500.
It should be possible to control these valves via touch or some buttons directly at the Pi. It should also show the level from the two containers.
The Problem is that theres no real programm for this expect WinCC OA from Siemens, but this is really hard to get as a student so I'm currently looking for alternatives ....
Any suggestions?

[aBUGSworstnightmare]

The S7-1500 should have a RS232 interface or Ethernet Module connected. This will allow you to communicate with the PLC.
For the GUI I would suggest to use Qt (https://www.baldengineer.com/raspberry- ... orial.html) but Python is also fine (https://www.raspberrypi.org/learning/ge ... with-guis/). Which you will prefer in the end depends on your requirements. Qt is for sure the Pro-approach.