Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 503)

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RSView32 User’s Guide
Masking pens
By default, all pens in a trend are visible. However, too many pens on
one display can be difficult to read. To enable operators to hide or
show individual pens, set up pen masking.
The Trends graphic library contains buttons that are already
configured for pen masking. To use these buttons, drag and drop them
into your graphic display.
To set up pen masking, create an expression that sets the value of the
bit for the \PenMask control tag. To show the pen, the bit must be 1.
To hide the pen, the bit must be 0.
Move two views to the right StartTime = StartTime + 2 
TimeRange
Pause the trend Paused = 1
Resume the trend Paused = 0
Specify the newest data log file as
the current file* CurrentFile = Current File +
NewestFile
Move from the current file to one
file earlier* CurrentFile = CurrentFile – 1
Move from the current file to one
file later* CurrentFile = CurrentFile + 1
Specify the oldest data log file as the
current file* CurrentFile = CurrentFile –
OldestFile
* Expressions using CurrentFile are applicable to trends using the Choose
File, Oldest File, and Newest File Data Sources. Historical trends move
between files automatically.
To Use this expression