The system runs an integrity control of retentive variables by the applicaiton of a CRC to the nonvolatile data memory. This detects any corruption and prevents the application from starting up, signalling the situation by flashing the led err as shown in Err led signals.
For the application to function again, a new download of the application must be performed with the development environment, or the “Reset Error Checksum” system function. These operations delete the error status and zero-setsall retentive variables.

The procedure:

• Check the error status and end the funciton if no error is present.
  In microQMove products, the presence of the QCL application is also checked.
• Vengono azzerati i dati ritentivi e viene visualizzato il messaggio “Clear power down data…” fino al termine della procedura.
• Resets the retentive data and the message “Clear power down data…” until the end of the procedure.
• End of operation