5.5 Operation principle5.5.1 Local HMIIEC12000175 V1 ENFigure 7: Local human-machine interfaceThe LHMI of the IED contains the following elements:• Display (LCD)• Buttons• LED indicators• Communication port for PCM600The LHMI is used for setting, monitoring and controlling.5.5.1.1 DisplayThe LHMI includes a graphical monochrome display with a resolution of 320 x 240pixels. The character size can vary. The amount of characters and rows fitting the viewdepends on the character size and the view that is shown.The display view is divided into four basic areas.Section 5 1MRK 502 048-UEN ALocal Human-Machine-Interface LHMI64Technical manual