Hello Sebastian,
Yes the NI PXI-7811R can use the PXI star trigger line to send or receive triggers from a device plugged into
slot 2 of the PXI chassis. The PXI star trigger line on the NI PXI-7811R is PXI/STAR."
You
can use the Digital Input or Digital Output FPGA functions to read and
write from the STAR trigger.
Page 2-5 of the PXI-7811R User's Manual
has a section on the PXI Trigger Bus that goes into a lot more detail.
Kind regards,
Elmar