SRAM based solution

The patent-pending SRAM support feature employs both hardware and software, as follows:

Hardware: SRAM buffer with dedicated capacitor for memory refresh (backup). Newer JACE-3E and NPM6E-based controllers (JACE-6E, JACE-603, JACE-645) have “onboard” 512 KB of SRAM and backup capacitor, plus supporting circuitry. The SRAM option card provides all of this on an installable option card, for JACE-2,-6,-7 series controllers.
Software: The JACE requires AX-3.6 or later and the module “platDataRecovery”, which works with the SRAM buffer to continuously save changes as “deltas”. Essentially, this feature automatically “records” all changes during runtime, for “playback” upon station startup after a power outage.

Providing that the JACE is properly licensed, no other configuration is required for this combination to provide SRAM support. This feature automatically works for a JACE-6E or JACE-3E, as well as for other platforms with the SRAM option card (providing the platDataRecovery software module is installed).

However, an interface “window” is automatically provided in the station running on the JACE, via the dynamically created “DataRecoveryService” under its PlatformServices container. A special view on this platform service allows verification of operation, and if ever necessary, a means of troubleshooting.

Starting in build 3.6.44, the DataRecoveryService includes a single configuration property: “Service Enabled”, which is true by default. The use case is for a JACE-3E or NPM6E-based controller (e.g. JACE-6E) in which you want to disable SRAM support, using only its installed backup battery instead. For background details, see Unsuitable station for SRAM support.