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National Instruments Corp.
17
NI 9505E Operating Instructions and Specifications
Encoder Signals
The encoder signals consist of a Phase A, Phase B, and Index
(Phase Z) input. The NI 9505E supports differential and
single-ended inputs for Phase A, Phase B, and Index (Phase Z)
signals. Figures 8 and 9 show simplified schematic diagrams of the
encoder input circuit connected to differential and single-ended
inputs. You can also accommodate open-collector output encoders
by using a 1 k
Ω
pull-up resistor on each line to +5 VDC. Refer to
the
section for more information about the encoder
inputs.
The encoder signals are raw digital input signals. These signals are
used in the LabVIEW FPGA Module for position and/or velocity
feedback. Figures 2 and 3 illustrate the use of the encoder signals
in a position and velocity loop in the LabVIEW FPGA Module.
Refer to the examples installed at
labview\examples\
CompactRIO\Module Specific\NI 9505
for examples of using
the encoder signals. Refer to the
NI 9505 Reference Help
book
in the
LabVIEW Help
, available by selecting
Help»Search the
LabVIEW Help
, for more information.
Содержание NI 9505E
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