Covrex Pool Control

I own a LPW pool and with it comes a PoolControl 2 ECO control unit. Now I have seen that there is a ModBus connector on the motherboard, labelled JP4. I would like to read out the PT1000 temperature sensors for water and air temperature. Has anyone managed to achieve this?

BTW - this is JP4 - looks exactly like a ModBus connector:

Photo 14.11.24, 17 40 55

I’ll write to the pool manufacturer and ask how to do this…