Ni Motion Controller Functional Architecture - National Instruments NI-Motion User Manual

Chapter 1 Introduction to NI-Motion
Because the NI SoftMotion Controller is not a hardware device, information about
Tip
its architecture is not covered in this section. Refer to the
Architecture
NI SoftMotion Controller.

NI Motion Controller Functional Architecture

NI-Motion User Manual
Figure 1-2 illustrates the physical architecture of the NI motion controller
hardware.
Host Computer
PC
Figure 1-2. Physical NI Motion Controller Architecture
section for information about the functional architecture that is specific to the
Functionally, the architecture of the NI 73xx motion controllers and the
NI SoftMotion Controller is generally divided into four components:
supervisory control, trajectory generator, control loop, and motion I/O. For
the NI SoftMotion Controller, the motion I/O component is separate from
the controller. Refer to Figure 1-3 and Figure 1-4 for an illustration of how
the components of the 73xx and NI SoftMotion Controller interact.
NI Motion Controller
Microprocessor
Running a Real-Time
Operating System
Supervisory/
Communications/
User-defined Onboard
Programs
Watchdog
Timer
NI SoftMotion Controller
1-4
Digital Signal
Processor (DSP)
Control Loop and
Trajectory Generation
FPGAs
Encoders and Motion I/O
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