SCADA devices might also use a http:// or https:// interface (such as web page). also realize any network accessible interfaces will likely be on wired ethernet only, not on the wifi interface. i'm not familiar with android pie, but since it is android, you should be able to install SSHD on the controller using any of the standard methods used by android. after you have sshd installed and configured you should be able to log in and do what you need to do... the other thing is, like i said above, try to see if the device has port 80 or port 8080 open... if so it has a web page for interfacing with it.