
System tags B–7
\PenMask Analog A 16–bit mask that controls the visibility of the
trend pens. If the bit corresponding to a pen is set
in this mask, the pen is displayed. For example:
PenMask = 0000 0000 0000 0000 = 0 No pens
are displayed.
PenMask = 0000 0000 0000 0100 = 4 Only Pen
3 is displayed.
Read and write
\StartTime Analog Integer tag specifying the time at the right margin
of the time scale.
The start time value is the number of seconds
elapsed since midnight (00:00:00), January 1, 1970,
coordinated universal time (UTC).
Read and write
\StartTimeDate String String tag representing the start time and date for
the trend (at the right margin of the time scale).
For example, JAN 01 1998 13:00:00.
Read and write
\TimeRange Analog Time range of the time scale in seconds. Read and write
\Updating Digital Digital tag that indicates whether the trend object
is retrieving data log data. The tag value is 1 if
retrieving data, and 0 if not.
Read only
\YMag Analog Magnification of the vertical axis in percent.
0No magnification
100Twice the resolution (half the range)
-100Half the resolution (twice the range)
Read and write
\YOffset Analog Offset of the vertical axis in percent. Moves the
view up or down but does not change the time
range.
Read and write
Tag name Type Function Read or Write?
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