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Longwatch, the developer of the Video Historian for Video MES applications, has announced support for the Wonderware ActiveFactory trend chart object.

This enables users to link plant video directly with the Wonderware graphical data trend charts.

The result is the ability to see exactly what was happening in the plant when trend pens were in a particular condition.

The Video Historian application is part of the Longwatch Version 5.0 system.

Longwatch Video Engine software collects video from multiple cameras throughout the plant, which can be transmitted to the control room human-machine interface over standard IT or industrial networks or wireless and cellular links.

The Video Historian enables the user to retrieve video based on time, manufacturing or security context, such as process alarms, workflow steps, batch phases and intruder alarms.

Using a thin-client, web-based Longwatch Viewer user interface, the Video Historian creates a split-screen display showing real-time or archived video from one or more cameras on the bottom half of the screen.

The top half of the screen can show plant information in a number of formats.

By integrating with the Wonderware ActiveFactory trend chart object, the Video Historian simultaneously shows trend graphs of user-selected variables (displayed as colour ‘pen’ lines) with archived video.

The video panel and trend chart can be ‘linked’ or synchronised with the click of a button on the viewer display.

When the user clicks and drags the chart object time cursor, which is normally used only for displaying the value and status of a process variable’s engineering units at a selected point in time, the Video Historian also moves the video forward or backward accordingly.

The user can view the video and, when he or she is at a point of interest, can click the ‘link’ button, causing the trend chart to slew automatically to the selected point in time.

Longwatch has integrated functionality to the trend chart object, including: integration of the Tag Picker so that new trend items can be added to the chart; and enhancement to the time cursor to enable video scrolling.


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