Owner's manual

Beginning Programming 6-5
6.4.1.1 Dot
FmXP is capable of dispensing precision dots quickly and uniformly. Dots are used in a variety of
dispensing applications, including Surface Mount Adhesive (SMA) applications. The size of the dots and
characteristics of the dispensing are controlled through Dot Parameters. Refer to 6.5 Dot Parameters.
6.4.1.2 Line
Lines are a common dispensing element for Dam and Fill and Flip Chip Underfill applications. To
program a line, you simply teach the start and end points of the line. Line width and characteristics of the
dispensing are controlled through Line Parameters
. Refer to 6.6 Line Parameters.
6.4.1.3 Arc
Arcs are a common dispensing element for Dam and Fill and Lid Seal applications. There are two
available methods for teaching an arc:
• Start, Middle, End (SME)
• Center
The SME method requires you to teach a starting, middle and end point for the arc. The three points are
treated like a part of a circle and the arc will be dispensed along the three points accordingly. Degrees (°)
are automatically calculated when using the Start, Middle, End (SME) method.
The Center method requires you to teach a starting point on the arc followed by a center point. Since the
arc is treated like a part of a circle, the center point is the center of the circle if the arc were to complete
360 degrees. The Degrees text box is used with the Center method if you know how many degrees of a
complete circle the arc will travel.
Activating the Clockwise feature determines the direction the dispensing head moves while dispensing.
6.4.1.4 Circle
Circles are also a common dispensing element for Dam and Fill and Lid Seal applications. There are two
available methods for teaching a circle:
• Start, Middle, End (SME)
• Center
The SME method requires you to teach a starting point, a middle point and an end point for your circle.
The three points are defined as points along the circumference of the circle and the circle will be
dispensed along the three points accordingly. The Start and End points may be the same point, but it is not
necessary to program the circle in that manner.
The Center method asks you to teach a starting point on the circle followed by a center point. FmXP will
automatically calculate the 360 degrees necessary to complete the circle. This method may be difficult to
use if you cannot accurately determine the center of your circle.
Activating the clockwise feature determines the direction the dispensing head moves while dispensing.
6.4.1.5 Rectangles
Rectangles are commonly used in Dam and Fill applications. A quick-drying, high-viscosity fluid is used
for the rectangle to form a perimeter dam. A lower viscosity adhesive is generally used for the fill. To
program a rectangle, you are required to teach the opposite corners.