Stupid PowerFLARM Question

I was going to meet up with a soaring buddy who has a Power Flarm, and take
it flying in my flying club's DA40 to see what traffic it will display. Our
DA40 has a G1000 with the old mode S traffic display, so we can compare the
results.

My question is related to what the ADS-B in capabilities of the power flarm
are. Does it just receive the 1080ES signals from ADS-B equipped planes, or
does it also pick up on the ground station based traffic info?

Thanks

Peter