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National Instruments Corporation
29
NI 9930 Motion Control Accessories User Guide
Step 3: Configure the NI 9512 C Series Module
Complete the following steps to configure the axis I/O settings for use with the Panasonic Minas A or
Minas A5 drive.
1.
Right-click the axis in the
Project Explorer
window and select
Properties
from the shortcut menu
to open the
Axis Configuration
dialog box.
Figure 21 shows the parts of the
Axis Configuration
dialog box for NI 9512 C Series module.
Figure 21.
Axis Configuration Dialog Box
Note
The
Axis Configuration
dialog box user interface may not match this image exactly
depending on which version of the LabVIEW NI SoftMotion Module you are using.
2.
On the General Settings page set the
Loop Mode
to
Closed-Loop
.
3.
Click the Encoder button and configure the Units and Counts Per Unit.
a.
Make the following changes in the
Active State
section:
•
Set the
Line State
for
A
to
High
.
•
Set the
Line State
for
B
to
Low
.
•
Set the
Line State
for
Index
to
High
.
b.
In the
Index Reference Criteria
section set the
Line State
for
A
and
B
to
Inactive
.
c.
Type
rev
in the
Units
text box.
d.
Set the
Counts per rev
to the correct value based on your encoder resolution.
Note
NI SoftMotion uses x4 encoding, so the encoder resolution needs to be converted to
quadrature counts per revolution before entering the information into the
Axis Configuration
dialog
box. If your encoder does not supply resolution in quadrature counts per revolution, determine
quadrature counts per revolution by multiplying the encoder resolution in encoder lines or periods by
four. Encoder counts per revolution is also referred to as counts per index. For example, a 500 line
encoder has 2,000 quadrature counts per revolution.
Содержание NI 9930
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