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© National Instruments Corporation 1-1 7344/7334 Hardware User Manual
1
Introduction
This chapter describes the FlexMotion 7344 and 7334 controllers and their
operation.
About the 7344/7334 Controller
Thank you for purchasing a 7344/7334 controller. The 7344/7334
controller featuresadvancedmotion controlwith easy-to-use softwaretools
and add-on motion VI libraries for use with LabVIEW.
Features
The 7344 controllers are a combination of servo and stepper motor
controllers for PCI, PXI, and 1394 bus computers. The 7334 controllers
are exclusively stepper motor controllers for PCI bus computers. Both
controller families provide 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 7334 motion controller for point-to-point
and straight-line vector moves for stepper motor applications. The 7344
controllers add the ability to perform arbitrary and complex motion
trajectories using stepper motors or servo devices. Refer to the FlexMotion
Software Reference Manual for a complete list of the feature differences
between the 7344 and 7334 controller lines.
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 control stepper motors. These axes can
operate in open or 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.