and trend period. Each trend will be specified with certain line in monochrome printers (for example dot, line, straight etc) and with different color in color printers. 

Each operator or person who log in will be able to access fully customized trend pages. These pages should be able to be customized by each user online by using drag and leave method or by using standard configuration methods. All configurations which are present in certain configuration medium will be able to be used by user for changing trend graphs while system is running. These will include minimum pen color, pen scaling, grid, and trend tag assignments for each trend page. 

## Historical Analysis 

Alarm pen will provide detailed information regarding with any point which is selected by operator in addition that will specify active/inactive/acknowledge status for alarm pen. For example high and deviation status should displayed based upon request of user. 

Alarm pens will be able to be shifted in addition to trend pens and alarm status will be able to be displayed real time. Operator will be able to select which alarm pens will be monitored for getting view for certain process unit or historical data. 

Alarm pens will display historical status in line with trend pen history in historical data screen while access is maintained for historical data. Operator will make single request for certain date and time for historical data view and all pens including alarm and trend pens will be configured for getting mentioned time interval. 

## 8.19.10 Historical Trend Data Analysis View 

It will be possible to set/configure trend graphs in graphical display interface and to save this configuration into a file for loading again. Graphical interface will be able to transfer trend data to .csv file. 

It will be possible to display real time graphs for several tag and alarm tag information. It will be possible to view Temporary graphs for real time tag data(instant trend) without requiring to set historical data which were retrieved before. 

## 8.19.11 Reports 

Operator Interface will perform creating report, planning and management activities internally and there will not be need for software packages from third parties for realizing these functions. No long period data or collector will be required for sending data to operator interface for reporting except for high speed collectors. It will not be necessary to make programming in controller subsystems. Operator interface will have functions to be used for these purposes and triggering will not be required for triggering. 

Report can be planned by using software such that it can be made periodically in certain hours of day, periodically, based upon request of operator or when and event occurs. ( for example alarm conditioned or collectively at the end of the work. 

Software will support printing operations in specified reporting printer. Also Software will be able to record all reports in disk file or database (SQL, ODBC, DBF) or internet server, HTML and similar rich text format. 

Software will be able to display all reports with text types and colors which can be identified by user. 

