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MG.10.J8.02 – VLT is a registered Danfoss trade mark
Programmable SyncPos motion controller
What to do … if the curve is not displayed
If only points instead of a curve are displayed in the
diagram window, then the curve could not be calcu-
lated. For example, you may have
• entered too few points (at least three points are
required for the illustration),
• selected a larger number of intervals as master
length,
• set tangent points incorrectly. (Rule of thumb:
Two tangent points must always alternate with
at least two curve points.)
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CAM-Editor Messages
The display indicates input and syntax errors. You
can scroll back and forth through the messages.
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Index card "FIX POINTS"
On principle, you must enter the fixpoints for the
master and the slave in ascending order in the
curve table. Do not select user units that are too
small in order for the curve to get a reasonable re-
solution despite the whole number input. It is recom-
mended to use at least four-figure units.
Click on
→
"RECALC" to display the curve. A curve
will only be displayed when you have entered at
least three points each for the master and slave,
respectively, and entered the point type „1“.
As soon as you have defined at least the start and
end point of the curve, you can also set the
additional fixpoints interactively with the help of the
mouse.
The fixpoints should lie on interval borders. Thus,
you should always activate
→
"SNAP ON GRID", if
possible.
PC Software Interface
How to insert or delete Fixpoints in the table
You can always delete the last point or insert an
additional point in the table. You can insert or
delete points in the table with the help of the pop-
up menu.
Using the right mouse button, click on the point
you want to delete, or in front of which you want to
insert a fixpoint. Select
→
"INSERT FIXPOINT" in
the subsequent pop-up menu. The point will be
inserted between this point and the previous one.
Alternatively, you can insert or delete the desired
points interactively with the help of the mouse in
the diagram.
You can change the set points in the table by over-
writing in any way desired.
"TYPE": Curve and Tangent Points
Type 1 = curve point
Type 2 = tangent point for straight sections
The curve will be calculated as spline interpolation
between curve points. For sectors where the velo-
city must be constant and the acceleration = 0,
you should use the tangent points. A straight line
instead of a spline will be placed between these
points.
The calculation of a spline always requires three
points, i.e. at least two fixpoints and one tangent
(straight section) consisting of two tangent points.
You can determine the point type either in the
table by means of numerical input or by changing
the existing type with the help of the pop-up
menu.
Using the right mouse button, click on the point
from which the tangent (straight section) should
lead to the previous one. In the subsequent pop-
up menu, select
→
"CHANGE TYPE". The type will
be changed to tangent point = 2 for both fixpoints.
You can execute the same action in the diagram:
Move the cursor to the point until the hand icon
appears. Click on the right mouse button and
select
→
"CHANGE TYPE". Here, both points are
changed immediately, too.
