Thanks Jarno for your reply!
I am not sure if I understand what you mean by selecting the port via kstars.
Here is what I had understood and was planning to do. Please tell me if I was wrong and how.
I thought I would run indiserver on the rPi which is connected to the scope, tell indiserver (how?) to use a given serial port, and then connect the application to indiserver using TCP-IP (address and port).
Is that correct?
If so, how can I select the serial port on the application?
Also, I have two ports on the mount: one says hand controller, the other says auto guider. The cable I have fits the "hand controller" port.