
B–6 RSView32 User’s Guide
For example, if you typed Trend as the control tag, you would find a
folder called Trend in the list of folders displayed in the Tag Database
editor. The folder would contain the tags listed in the following table,
but each tag would be prefixed with “Trend”. The \CurrentPen tag
would be Trend\CurrentPen, and so on.
Tag name Type Function Read or Write?
\CurrentFile Analog Number of the current data log file. Data log files
are numbered sequentially. You can write to this
tag if Choose File, Oldest File, or Newest File is
the trend’s data source.
Read and write
(see Function
column)
\CurrentPen Analog Number of the current pen (1 – 16) highlighted in
the legend.
Read and write
\NewestFile Analog Offset from current data log file to newest data log
file.
Read only
\NewestTime Analog Time of the newest data sample available for
plotting.
Read only
\OldestFile Analog Offset from current data log file to oldest data log
file.
Read only
\OldestTime Analog Time of the oldest data sample available for
plotting.
Read only
\Paused Digital A tag value of 1 pauses the trend.
A tag value of 0 resumes movement of the trend.
For a real-time trend, the \Paused tag has a default
value of 0 so the trend scrolls initially. For a
historical trend, the \Paused tag has a default value
of 1 so the trend pauses initially.
Read and write
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