Glossary
G-4
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GND
ground
H
half-step
Mode of a stepper motor—for a two phase motor this is done by
alternately energizing two windings and then only one. In half step
mode, alternate steps are strong and weak but there is significant
improvement in low-speed smoothness over the full-step mode.
hex
hexadecimal
home switch (input)
A physical position determined by the mechanical system or designer
as the reference location for system initialization. Frequently, the
home position also is regarded as the zero position in an absolute
position frame of reference.
host computer
Computer into which the motion control board is plugged.
I
I/O
input/output—the transfer of data to and from a computer system
involving communications channels, operator interface devices,
and/or motion control interfaces.
ID
identification
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 10
3
, used with units of
measure such as volts, hertz, and meters.
K
kilo—the prefix for 1,024, or 2
10
, used with B in quantifying data or
computer memory.
Summary of Contents for PXI-7340
Page 1: ...PXI 7342...
