BusErrorRecv is actually a counter, not a status; a value of 68 means you received 68 bus errors since the last time the counter was reset. A VXI bus error is a (typically) non-fatal condition indicating that a VXI device did not respond to a given access -- this could be because you accessed space where no device exists, or because the device did not respond at the time you accessed it (perhaps because a FIFO was full or empty).
-Scot (PXI/VXI Senior Software Engineer)
