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Introduction
This chapter includes information about the features of the National Instruments PXI/PCI-7340
motion controller and information about operating the device.
About the NI 7340 Motion Controller
The NI 7340 motion controller features advanced motion control with easy-to-use software tools
and add-on motion VI libraries for use with LabVIEW.
Features
The NI 7340 motion controller is a combination servo and stepper motor controller for PXI,
Compact PCI, and PCI bus computers. The NI 7340 motion controller provides fully
programmable motion control for up to four independent or coordinated axes of motion, with
dedicated motion I/O for limit and home switches and additional I/O for general-purpose
functions.
You can use the NI 7340 motion controller to perform arbitrary and complex motion trajectories
using stepper motors or servo devices.
Servo axes can control servo motors, servo hydraulics, servo valves, and other servo devices.
Servo axes always operate in closed-loop mode. These axes use quadrature encoders or analog
inputs for position and velocity feedback and provide analog command outputs with an
industry-standard range of ±10 V.
Stepper axes can operate in open or closed-loop mode. In closed-loop mode, they use quadrature
encoders or analog inputs for position and velocity feedback (closed-loop only), and provide
step/direction or clockwise (CW) /counter-clockwise (CCW) digital command outputs.
All stepper axes support full, half, and microstepping applications.
Hardware
The NI 7340 is a high performance motion controller that uses an advanced dual-processor
architecture including a 32-bit CPU, combined with a digital signal processor (DSP) and custom
field programmable gate arrays (FPGAs). The first-in-first-out (FIFO) bus interface and
powerful function set provide high-speed communications while off-loading complex motion
functions from the host PC for optimum command throughput and system performance.
With the NI 7340 motion controller, you can use full onboard programming to execute up to
10 simultaneous motion programs.
© National Instruments | 1-1
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