National Instruments NI 9516 Operating Instructions And Specifications - page 16
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ni.com
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NI 9516 Operating Instructions and Specifications
Manual, which you can download from
ni.com/
manuals
, for more information about signal connections.
Drive Command Output
The NI 9516 module provides a ±10 V analog Drive Command
output. Use the Drive Command COM signal instead of COM as a
reference for the Drive Command Output. This reference signal
helps keep digital noise separate from the analog output.
Encoder Signals
The NI 9516 supports two encoder channels that allow for
dual-loop feedback, which enhances system stability and precision
and provides backlash compensation. The Encoder 0 channel
consists of a Phase A, a Phase B, and an Index input. The
Encoder 1 channel consists of a Phase A and a Phase B input.
The NI 9516 supports RS-422 differential and single-ended inputs
for Phase A, Phase B, and Index signals, and provides a +5 V
output for encoder power. National Instruments strongly
recommends you use encoders with differential line driver outputs
for optimized noise immunity and improved accuracy in all
applications. Figures 5 and 6 show simplified schematic diagrams