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Emergency Mode

The system and application(s) of the RAC18-IP controller are stored on an SD card. If the SD card is not detected in the device or the device detects frequent reboots (at least 5 times in 6 minutes), which prevent correct operation, the device enters an emergency mode.

What Causes the Emergency Mode?
  • No SD card is detected in the device.
  • The diagnostic process reveals error in I/Os.
  • Storage limit is exceeded.
  • Required files are missing during a start-up of the device.
  • Libraries or files are corrupted.

Operation in Emergency Mode

In the emergency mode, the device operation is limited:

  • libraries are not loaded;
  • the SD card configuration is not loaded;
  • only the System container with limited options (only Logs and Platform components) is displayed in the Workspace Tree;

The device's Workspace Tree in the emergency mode
  • the ALM LED is lit continuously;
  • the iFnet runs with an IP/port taken from a flash storage;

Note: The flash storage must be synchronized to configuration slots when available.

  • no authorization or credentials are taken from the flash storage (like IP/port).

When connecting to a device, which is in the emergency mode, a notification is displayed:

The emergency mode notification notice

Possible Actions

When the device enters the emergency mode, take one of a few possible actions:

  • reboot;
  • restore to factory defaults (restoring with S1 6th DIP switch): format the SD card (if available), restore default credentials, IP, mask, gateway, iFnet port;
  • restore to defaults (restore in the iC Tool): remove files from the SD card (if available and formatted) excluding only files with IP, port, and credentials (libraries must be also removed);
  • read logs from the SD card if available.
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