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ATM auto recovery
July 29, 2013 by atm Atom — blogger, atmatom
The average ATM owner may not be aware of this, but the XScale/X2 (including Traverse and ARGO) ATM platform has built-in methods to auto recover from unexpected system faults. This post describes the recovery process methods for the following Triton models: RL1600, RL2000, RL5000, FT5000, RT2000, Traverse, and ARGO.
Auto Error Recovery
Whenever the system encounters a detectable error condition, the ATM will go out of service with a specific error code, which is displayed to the screen and sent to Triton Connect. For some error conditions, it is possible that the error is intermittent and can be recovered automatically.
When the system goes out of service with a recoverable error code, the ATM will attempt to reset the error automatically, including a self-restart if an error reset does not help. If the restart does not recover, the system will remain out of service until an administrator — either from management functions or Triton Connect — manually resets the system.
The list of recoverable errors is programmed into each software release and may vary by software version. This list of error codes can be viewed in Management Functions > Terminal Status > Configuration Summary.
Hardware Watchdog
The ATM main board contains a built-in hardware reset method, or "watchdog," that will automatically reset the system if the software stops responding for any reason. This provides a method to recover from software exceptions or faults without manually restarting the ATM.
If this condition occurs, it will show up in the electronic journal as "Improper Shutdown Detected." Note that not all instances of improper shutdown indicate a watchdog reset, but could also occur if power was cycled on the ATM without issuing a controlled shut down.
Hard Timeout Recovery
This recovery method is a software-implemented method to detect whether the software has remained at a specific "state" for an extended amount of time. This allows the ATM to restart itself automatically in the event that the hardware watchdog does not get triggered, but some other system fault occurs that allows some parts of the system to continue running.
If this condition occurs, it will show up in the electronic journal as "Hard Timeout Hit," followed by a restart. The hard timeout journal entry will also contain some specific codes that are used for analysis by Triton. If an ATM is experiencing a large number of hard timeout entries with a common numeric code, this could point to a system issue. The journal data and other relevant information should be sent to Triton for analysis.
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This article has been republished from the Triton blog, atmAToM, with kind permission from Triton.
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