MDI Limits 

The two links below contain a list of the FOT limits and the 
"OPMONITOR" limits.  

FOT Limits - based on June 10 1997 Procedure M_FL_V_LIM

All MDI mnemonics are listed.   Off means the procedure
specifically turns off that mnemonic's limit check.  No
entry means the mnemonic is not called out in the procedure
and therefore not checked.

Limits are checked every update - but the error message will
roll off the operators screen in a short time.  So, unless the
limit is toggling, the violation may not be noticed until the end
of the shift when all errors are printed out.  There is also a page
list all of the limits that the second operator has.  The errors do
not scroll off the screen for the page, but it is up to the operator
how often this is checked.

In addition, a smaller set of critical MDI mnemonics is monitored through a
configuration monitor check which will alert both operators of an alarm.
Currently, MIPWA, M+5PC1N, M+5PC2N, MTOPTS6, and MIAEMTR, are the mnemonics
which are monitored with the configuration monitor.  This alerts the operator
in a different color then the other limits and so may have more of a chance
of catching there attention.

"OPSMONITOR"  runs on MDISAS and sends out a mail message to selected 
people* if a limit is violated.  The program checks all the mnemonics
every two minutes and sends out a mail message once per hour if a limit
has been violated.  

*If you are not on the list and would like to be -send a mail message
to Joe Covington


<a href=http://mdisas.nascom.nasa.gov/manual/fot.limits>FOT Limits</a>

<a href=http://mdisas.nascom.nasa.gov/manual/opsmon.limits>OPSMONITOR  Limits</a>

CNF - 25 Aug 97