Figure out the connection to the intelliflo vsd pump

[Zuntara]

Need to figure out which pins i need to connect to get RS485 working. Some other sites point out to use the pentair connection cable (which i don't have) - is there something build-in the cable to allow the communication?

When i connect to pins 6 and 7 of the connector (bottom and bottom-left) then my rs485 shields its RX port is constant on.

Checklist:

• [X] Add comments in code for cycli communication
• [X] Adapt code to send from SRC 0x10 instead of 0x21 (33) (PR #2)
• [ ] Test with the newly modified code that the pump responds to commands
• [X] Check that the pump is in active time schedule and start led is on + external programs are configured