Some case the device contains invalid values in the registers. (device is offline, empty register,...) If the realtime service can read from the device the value is appeared on the screen or logged into the database. The user can configure the register settings in the Realtime Device Manager what is the invalid value (fix number) and can modify this value if it is needed. (Update realtime service after modification.) Examples: 1st case (default): The invalid value is 429 496 729. The value is shown on the screen and logged into the database. 2nd case : The user configure this value as measure error. The value is shown on the screen but an icon is appeared on it and not logged into the database... ...and the error is shown in the alarm browser. (An error has occured when the service try to read this register...) 3rd case: The user configure an error change value. When the register value is equals to the "error value" the service change it to the "error change value". The modified value is shown on the screen and logged into the database.
