Communicate with Kaco solar inverter

I am new to this forum.  I have a solar system on my house that uses a Kaco inverter.  Kaco had been monitoring the elecricity production of my solar system.  But now Kaco has been bought by Siemans and they are going to discontinue monitoring.  Monitoring was done via an internet communication device installed in the inverter and sending data to the Kaco server to collect and display the daily production.

I was hoping someone here could point me in a direction where I could connect to the inverter's communication device say via telnet and collect the date.  I am an amateur programmer familiar with C, C++, java and javascript.  So I thought I could build an automated data collection tool to talk to the inverter, collect data and store it on my PC.

Any suggestions would be appreciated.  Thanks.