IEC01000242_2_en.vsdActivatingsignal 2LED 2ManualresetActivatingsignal 1AutomaticresetLED 1DisturbancetRestartIEC01000242 V2 EN-USFigure 26: Operating sequence 6 (LatchedReset-S), manual reset5.5.3 Function keys5.5.3.1 Functionality GUID-BED38E9A-C90D-4B7F-AA20-42821C4F6A1C v3Local Human-Machine-Interface (LHMI) has five function buttons, directly to the leftof the LCD, that can be configured either as menu shortcut or control buttons. Eachbutton has an indication LED that can be configured in the application configuration.When used as a menu shortcut, a function button provides a fast way to navigatebetween default nodes in the menu tree. When used as a control, the button can controla binary signal.5.5.3.2 Operation principle GUID-977C3829-B19B-457E-8A4D-45317226EF22 v3Each output on the FNKEYMD1 - FNKEYMD5 function blocks can be controlledfrom the LHMI function keys. By pressing a function button on the LHMI, the outputstatus of the actual function block will change. These binary outputs can in turn beused to control other function blocks, for example, switch control blocks, binary I/Ooutputs etc.Section 5 1MRK 511 408-UUS ALocal Human-Machine-Interface LHMI100 Phasor measurement unit RES670 2.2 ANSITechnical manual