Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 27)

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FactoryTalk Historian ProcessBook Essentials
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9
Displays and Connection Failure
If the connection to your data is not successful, the display (page 11) is still
drawn, but data in dynamic elements are replaced with indicators
signifying that no data is available.
 Trends are labeled Invalid and no information is plotted.
 Values are replaced with pound signs (###) and the message
Disconnected appears.
 Bar graphs are drawn using hash marks (//////).
 Multi-State symbols show the configured color for bad data.
If a server has been disconnected, and/or cannot be reached, the Select
New Node dialog box appears.
Click Connections to launch the PI Connection Manager dialog box.
From there you can choose a new server from the drop-down list of
connected servers.