Low-Cost Stepper Motion Controllers
Low-Cost Stepper Controller
NI 7330 Series
• Up to 4 axes of stepper motion
• 3D linear interpolation
• PXI (cPCI) and PCI versions available
Operating Systems
• Windows 2000/NT/XP
Models
• NI PCI-7334
• NI PXI-7334
Recommended Software
• LabVIEW
• NI Motion Assistant
• LabWindows/CVI
• Measurement Studio
• Motion Control Module
for Measurement Studio
Other Compatible Software
• Visual Basic
• C/C++
Driver Software (included)
• NI-Motion
Overview and Applications
NI 7330 series devices are low-cost stepper motion controllers for
point-to-point applications. These low-cost motion controllers
provide new solutions for machine builders who need simple,
straightforward motion control without a lot of extra features.
Unlike other low-cost motion controllers, NI 7330 controllers
still have a variety of powerful features including:
• Linear interpolation for coordinating multiple axes.
• Real-time system integration for directly communicating
with data acquisition or image acquisition boards
• High-performance stepper generation for ensuring smooth
motion at high velocities.
NI-Motion Driver Software
NI 7330 devices use the NI-Motion driver. The advantage of this is
that if your application needs change in the future, you can easily
upgrade your hardware without having to change your code. You can
also take advantage of any firmware updates with the field-
upgradable firmware.
Feature
Maximum number of axes
Closed loop stepper control
Linear interpolation
Configurable auxiliary DIO
RTSI
S-curve
Configurable move complete criteria
Software limits
High-speed capture
Blending
Upgradeable firmware
NI Motion software API
Number of axes per 62.5 microsecond PID rate
Static PWM outputs
DIO
Analog-to-digital converter
Stepper output rate
Encoder rate
PCI
PXI
NI 7330 Series
4 axes
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
1
2
32 bits
12-bit A/D
4 MHz maximum
20 MHz maximum
✓
✓
Motion
Figure 1. NI 7330 Series Features
Integration Capabilities
Like other NI Motion controllers, NI 7330 controllers offer powerful
integration capabilities with both data acquisition and machine
vision. One of the most powerful is the RTSI bus or PXI trigger bus
capability that you can use to communicate directly with other
devices without extra wiring and without consuming bandwidth on
the host bus. An NI 7330 is ideal when using stepper motors for
applications where only simple motion is required.
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National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
NI [ NATIONAL INSTRUMENTS CORPORATION ]
