
MAN1106-07-EN_XL+_UserManual
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CHAPTER 19: FAIL
–
SAFE SYSTEM
19.1
Overview
The Fail-Safe System is a set of features that allow an application to continue running in the
event of certain types of "soft" failures. These "soft" failures include:
•
Battery power loss.
•
Battery-Backed Register RAM or Application Flash corruption due to, for example,
an excessive EMI event.
The Fail-Safe System has the following capabilities:
•
Manually backup the current Battery-Backed RAM Register Settings into Flash
memory.
•
Manually restore Register Settings from the values previously backed up in Flash to
Battery-Backed RAM.
•
Detect corrupted Register Settings at power-up and then automatically restore
them from Flash.
•
Detect corrupted or empty application in Flash memory at power-up and then
automatically load the AUTOLOAD.PGM application file from Removable Media
(Compact Flash or microSD).
•
If an automatic Register Restore or Application Load occurs, the OCS can
automatically be placed in RUN mode