Yaskawa MP900 Series Motion Programming Manual - Manual (Page 68)

2.1 Axis Move Commands
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* Example of MP930
The interpolation override setting differs depending on the Machine Controller model. Refer
to 1.2.3 Feed Speeds for details.
1. The speed designation (F) must be specified in the same block as the interpolation command.
2. The INTERPOLATION FEED SPEED RATIO SETTING command (IFP) is an isolated command, and
cannot be specified in the same block as the interpolation command.
3. If the override applied to the F designation results in a speed exceeding the maximum interpolation feed
speed (FMX), the speed will be clamped to the FMX speed.
2.1.4 CLOCKWISE/COUNTERCLOCKWISE HELICAL INTERPOLATION
(MCW, MCC)
Caution
D The linear interpolation axis specified for a CLOCKWISE/COUNTERCLOCKWISE HELICAL IN-
TERPOLATION (MCW, MCC) command can be either a linear axis or a rotary axis. Depending on
the axis movement in the linear interpolation portion, the helical interpolation path may not be a
helical shape. When programming, be sure to check the path to make sure that there are no tools
or other obstacles in the way of the workpiece.
Failure to carry out this check may result in damage to equipment, serious personal injury, or even death.
J Overview
The CLOCKWISE/COUNTERCLOCKWISE HELICAL INTERPOLATION (MCW, MCC)
commands are extensions of the CLOCKWISE/COUNTERCLOCKWISE CIRCULAR IN-
TERPOLATION commands. They simultaneously execute a linear interpolation movement
while moving on the circle (circular interpolation) determined by the designated center point
position or radius value (R).
The tangential speed for circular interpolation will be the interpolation feed speed (F designa-
tion). This movement is called “helical interpolation.” The methods for designating the circular
interpolation command portion are the same as the methods used for normal circular interpola-
tion. The description has been omitted here.
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