Parker Hannifin
• PPU (Set Axis Pulse per Unit Ratio)—sets the pulses per
programming unit for an axis, allowing convenient units for
motion profile such as inches, millimeters, or degrees. The PPU
for each axis is independent of that of other axes.
Caution —Damage to equipment and/or serious
injury to personnel may result if PPU is changed to
a value inappropriate to the application.
Carefully consider the effects throughout the
application before applying a new value, and
perform a test without the load or mechanics
attached.
• REN (Match Position with Encoder)—sets the commanded
position equal to the actual position for a given axis, thus
removing the following error.
• RES (Reset or Preload Encoders)—sets the commanded position
and actual encoder position to zero for a given axis. It also
allows the user to pre-load an axis with a position.
60 Programmer’s Guide
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