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Glossary
© National Instruments Corporation G-3 7344/7334 Hardware User Manual
Axis <1..4> Reverse
Limit Input
axis 1 through 4 reverse/counter-clockwise limit input
B
bbit—one binary digit, either 0 or 1
base address memory address that serves as the starting address for programmable or
I/O bus registers. All other addresses are located by adding to the base
address.
binary a number system with a base of 2
buffer temporary storage for acquired or generated data (software)
bus the groupof conductors thatinterconnect individualcircuitry in acomputer.
Typically, a bus is the expansion vehicle to which I/O or other devices are
connected.
byte eight related bits of data, an eight-bit binary number. Also used to denote
the amount of memory required to store one byte of data.
C
CCW counter-clockwise—implies direction of rotation of the motor
closed-loop a motion system that uses a feedback device to provide position and
velocity data for status reporting and accurately controlling position and
velocity
common reference signal for digital I/O
CPU central processing unit
crosstalk an unwanted signal on one channel due to an input on a different channel
CSR Communications Status Register
CW clockwise—implies direction of motor rotation