Introduction RTU500 series Remote Terminal UnitPresentation of the RTU500 series Web Pages1-4 | 1KGT 150 924 V000 1 - ABB AGWhen using the Microsoft Internet Explorer as Web browser the advanced option "Show friendlyHTTP error messages" shall be disabled in the Internet Explorer. Without this option the detailederror information of the RTU500 series Web server are not shown. The option can be found in the"Advanced" tab of the "Internet Options" (see figure below).Figure 5: Internet Explorer Settings1.5 Presentation of the RTU500 series Web PagesAll the pages used to in the RTU Web Server are structured with frames:• Status frame (1)• Navigation tiles (2)• Presentation and selection frame (3)