©
National Instruments Corporation
1-1
NI 951x User Manual
1
Introduction and Installation
This chapter includes information about the features of the National
Instruments 9512, 9514, and 9516 drive interface modules.
Note
The remainder of this document will refer to these modules collectively as NI 951x
modules.
About the NI 951x Drive Interface Modules
The NI 951x drive interface modules are a family of C Series motion
modules. These modules enable advanced motion with configuration and
programming using NI LabVIEW.
Features
The NI 951x modules provide servo or stepper drive interface signals for a
single axis, a full set of motion I/O including inputs for a home switch and limit
switches, incremental encoder inputs for position feedback, and 0 to 30 V
digital input and digital output lines. Refer to Chapter 3,
Signal Connections
,
for more information about the signals available on each module.
•
The NI 9512 is a single-axis stepper or position command drive
interface module with incremental encoder feedback.
Note
Refer to Appendix B,
Position Command Connections
, for information about using
the NI 9512 module with position command servo drives.
•
The NI 9514 is a single-axis servo drive interface module with
incremental encoder feedback.
•
The NI 9516 is a single-axis servo drive interface module with dual
incremental encoder feedback.
Hardware
The NI 951x drive interface modules include a processor to run the spline
interpolation engine and patented NI step generation algorithm or
PID control loop
/
PIVff control loop
. Working together they produce
smoother motion resulting in precise motion control.