I made some edits to the IMC guardian over the weekend.  I added some error checking to IFO_IMC. 

There is an error check function, in acquire if the IMC is not locked the errors are checked, if any of them are problems a message is written to the log, and the guardian enters the error state.  Jamie is going to find a wway to make these messages appear in a more prominent way, but for now we shoud look in the log whenever the guardian is in the Error state. 

This seemed to be working on saturday afternoon.  Occasionally (although not every time) the guardian fails with an error message:

User warning ca.get('H1:SUS-MC2_M3_WDMON_STATE') timed out after 1.00 seconds

File: ligo/apps/linux-x86_64/cdsutils/lib/python2.7/site-packages/ezca.py, line 194, read

raise EzcaError: could not get value from channel H1:SUS-MC2_M3_WDMON_STATE