71.4 The controller1.4.1 The control elementsHPM is available with or without a built-in display.Models without a display have no control elements. In this case, the controller isoperated via the communication port (RS-485).Models featuring a display offering a front panel that is highly intuitive and simple touse, containing a backlit text display and a control element with 5 keys.Fig. 1.2: The control elements1.4.2 The default displayThe display of HPM is a backlit text display of 4 x 20 characters. When the controlleris in “sleep mode” the “default display” will be shown, containing the followinginformation:Fig. 1.3: The default displayThe menu “global – service – display” permits adjusting the default display to theindividual needs of the user. The 4 rows of the display is capable of displaying currentsensor values, output signals and/or plain text.UPOKDOWN