4-14 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUALFRONT PANEL INTERFACE CHAPTER 4: INTERFACES4Figure 4-16: Traceability data in Actual Values windowThis information is also available from the front panel display through the following actual values:ACTUAL VALUES PRODUCT INFO MODEL INFORMATION SERIAL NUMBERACTUAL VALUES PRODUCT INFO MODEL INFORMATION LAST SETTING CHANGE4.1.9.3 Additional traceability rulesThe following additional rules apply for the traceability feature:• If the user changes any settings within the settings file in the offline window, then the traceability information isremoved from the settings file• If the user creates a new settings file, then no traceability information is included in the settings file• If the user converts an existing settings file to another revision, then any existing traceability information is removedfrom the settings file• If the user duplicates an existing settings file, then any traceability information is transferred to the duplicate settingsfile4.2 Front panel interfaceThis section explains use of the enhanced, standard, and graphical front panels.4.2.1 Front panel4.2.1.1 Enhanced front panelThe enhanced front panel consists of LED panels, an RS232 port, keypad, LCD display, control pushbuttons, and optionaluser-programmable pushbuttons.The front panel is hinged to allow access to removable modules inside the chassis.