Emu XL-7 & MP-7 User's Group

Hello, my Edirol PCR-30 constantly sends a system active sensing 
message several times a second.  I've looked at the XL-7's midi 
implementation chart and couldn't find this commmand.  Is there a way 
to disable this (or get the XL-7 to ignore it)?  Or is it okay to 
ignore (The Midi Input LED  repeatedly blinks several times a 
second.)  I understand that very few manufacturers use active sensing 
as a 'safety net' like Roland/Edirol does.
Thanks for any input on this!