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NI 9503 C Series Stepper Drive Modules and SoftMotion Module
Setting Up and Using Optional Hardware
This section describes how to configure and use the NI 9503 with additional hardware to provide
encoder feedback, limit and home inputs, digital I/O, and compare and capture operations. The
Stepper Drive (with Encoder) example contains four additional modules and additional UDVs
and FPGA loops to support these operations. Figure 7 shows the system setup with the additional
hardware.
Figure 7.
SoftMotion Module with NI 9503 UDV Axis System Overview
Table 4 shows the additional modules and what they are used for in the Stepper Drive (with
Encoder) example.
Table 4.
Additional C Series Modules Used in the Stepper Drive (with Encoder) Example
C
S
eries Module
S
lot
Number
Purpose
NI 9423 Sinking Digital Input Module
2
Limits, Home, and Digital Inputs
NI 9472 Sourcing Digital Output
Module
3
Digital Outputs
NI 9401 High-Speed Bidirectional
Module
4
Position Compare and Position
Capture
NI 9411 Digital Input Module
5
Encoder Inputs
Feedb
a
ck
Connection
s
Ethernet
C
a
ble
Motor Connection
s
NI RT Controller
(NI 9074
s
hown)
with C
S
erie
s
Mod
u
le
s
+24 V Power
Su
pply
(NI P
S
-15
S
hown)
9 to
3
0 V Power
Su
pply
(NI P
S
-16
S
hown)
S
tepper Motor
a
nd Encoder
Limit, Home,
a
nd Digit
a
l Inp
u
t Connection
s
Digit
a
l O
u
tp
u
t Connection
s
Comp
a
re
a
nd C
a
pt
u
re Connection
s
