I have used sensors with my DR5000 with a Lenz connection. These were not with the LR101 but with LDT RS16 units. I found you have to make sure the start address is set correctly or the addresses will all be offset.
Recently I have experimented with LS100 switch decoders with feedback. I want to use them for a signal module and found a Lenz command station will not use the feedback inputs separately, only as switch feedback. The DR5000 will read them, once again running a Lenz connection, so our modular layout signalling will be run off the DR5000.
Maybe it is something to do with the Ethernet connection, I'm using USB with Win 10.
Mike Ruby