Chapter 19: Fail - Safe System; Overview - HORNER APG XL10 PRIME OCS User Manual

CHAPTER 19:

19.1 Overview

For the EXL10 Series
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, Electromagnetic Interference, event.
For the XL10 Prime Series
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:
•
Retentive Register or Application flash corruption due to, for example, an excessive EMI,
Electromagnetic Interference, event.
The Fail-Safe System has the following capabilities:
Manually backup the current Retentive Register Settings into flash memory.
•
Manually restore Register Settings from the values previously backed up in flash memory 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.
J u l y 6 , 2 0 2 2
FAIL – SAFE SYSTEM
Figure 19.1 – Fail – Safe System Menu
MAN1029-10-EN_EXL10_XL10P_UM
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