CHAPTER 5 - PXG200E THEORY OF OPERATION19EATON PXG200E User Manual • IM02603001E Rev 5, 11-May-2012 • Firmware Version 5.03:3835PXG Real Time ClockThe PXG200E maintains an internal real time clock. This clock can be setmanually through the Web UI or automatically synchronized to a systemclock using NTP.This clock is used to time stamp data and events from “downstream”devices. The resulting time stamped events and data can be viewed in thePXG200E web pages or automatically reported to the Power Xpert Softwarefor integration into an enterprise power management system.To support high accuracy of event time stamps, the PXG200E also integratesthe capability to synchronize the clocks in certain INCOM devices to the realtime clock in the PXG200E. Please refer to the device data map atwww.eaton.com/pxg for the list of devices that support this feature.Trend ViewingThe PXG200E allows the user to view real-time trend graphs for individualparameters for supported devices. The user can select to enable trending onthe Device Configuration page. Once trending is enabled, an icon will bedisplayed next to the trended parameters on the Device page. Clicking on theicon will take you to the trend graph for that particular parameter. There isan option to view the past 24 hours, 7 days, 30 days or All Data when youaccess the Trend Graph page. It should be noted that if this option is notselected for a given device, the data will not be available to graph and it willnot be published to Power Xpert Software. The list of devices that supportthis feature can be found on the PXG200E device data map. Please refer tothe device data map at www.eaton.com/pxg.Interval LogsThe PXG200E stores historical five minute fixed data that can bedownloaded into a human readable file, CSV format. This file can be used toperform analysis to discover potential system issues or performmaintenance on a proactive basis.
