JACE SRAM support enabling/disabling

SRAM support is provided by the DataRecoveryService, a platform service that applies only to SRAM-equipped JACE controllers. In the initial AX-3.6 release, concurrent with the introduction of the “SRAM option card”, this platform service had no configuration properties—it is a “monitor only” service. Starting in build 3.6.44 and later, this service added a single configuration property: “Service Enabled”.

The main use case for this property is for a JACE-3E or NPM6E-based controller (JACE-6E, JACE-603, or JACE-645) with an installed backup battery, where you do not want it to use SRAM. This property setting is retained in any future controller upgrades. For more details, including scenarios where this configuration may be best, refer to the Engineering Notes II document JACE Data Recovery Service (SRAM support).

To enable/disable SRAM support in the DataRecoveryService

With a station in the JACE running, and that station opened in Workbench, do the following:

In the Nav tree, click to expand the station’s Services, then PlatformServices container to reveal all contained services.
Double-click DataRecoveryService. The Data Recovery Service Editor displays.
By default, the Service Enabled property is true. This is appropriate whenever the controller has no backup battery installed—for example, a JACE-3E or JACE-6E as factory shipped “battery-less”.

If the controller has a backup battery installed, you can optionally set this to false, providing:
- The “Battery Present” property in the station’s PlatformServices container is set to true. See To review/adjust PlatformServices properties for the JACE.
- The backup battery is known good. If disabling SRAM support, is recommended that you set the PowerMonitorService’s “Shutdown Delay” time no higher than the default 1 minute. See To configure power monitoring for a JACE with SRAM and backup battery.
If you set “Service Enable” to false, the DataRecoveryService no longer records runtime database changes to SRAM. The controller depends entirely on its backup battery to preserve station data upon a power loss!
Click Save to write the configuration to host platform.

You are prompted to reboot now to apply the changes. Click Yes to reboot with the change in the DataRecoveryService (disabled or enabled) made effective.