I have several questions regarding RAP protocol that (I believe) Interlink uses to communicate with ABB Robots:
- I have trouble to cross firewall: I was told that RAP protocol uses several TCP / IP ports to comunicate. What are the TCP/IP port range (is it from 0 to 65535? or is there a shorter range used).
- Is it always the client who initiate the TCP IP connection on each prot (like in FTP when using passiv mode)? Is it always using a service port (like the port 21 in FTP)?
- I would be interested to know how the client tells the server which port to listen to.
- Is the RAP protocl public and can I receive the specifications?