Download Motion Control NI PCI-7342 Hardware User Manual

Glossary
index
marker between consecutive encoder revolutions
inverting
the polarity of a switch (limit switch, home switch, and so on) in active
state. If these switches are active-low they are said to have inverting
polarity.
IRQ
interrupt request
K
k
kilo—the standard metric prefix for 1,000, or 103, used with units of
measure such as volts, hertz, and meters
K
kilo—the prefix for 1,024, or 210, used with B in quantifying data or
computer memory
L
LIFO
Last-In, First-Out
limit switch/
end-of-travel position
(input)
sensors that alert the control electronics that physical end of travel is being
approached and that the motion should stop
M
m
meters
MCS
Move Complete Status
microstep
The proportional control of energy in the coils of a Stepper Motor that
allow the motor to move to or stop at locations other than the fixed
magnetic/mechanical pole positions determined by the motor
specifications. This capability facilitates the subdivision of full mechanical
steps on a stepper motor into finer microstep locations that greatly smooth
motor running operation and increase the resolution or number of discrete
positions that a stepper motor can attain in each revolution.
modulo position
treat the position as within the range of total quadrature counts per
revolution for an axis
NI PCI-7342 Hardware User Manual
G-6
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