The NI-9503 is a single-axis C Series PWM stepper drive for CompactRIO. It connects directly to two-phase bipolar or unipolar hybrid stepper motors.
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Key product information and technical features.
The NI-9503 integrates the stepper power drive into a C Series module, eliminating a separate external motor drive and connector block.
NI's getting-started guide describes a CompactRIO real-time controller and chassis configuration using LabVIEW SoftMotion and FPGA code. A separate motor-bus power supply is required; the integrated drive does not eliminate external power requirements.
Verified product specifications.
| Number of axes | 1 |
|---|---|
| Axis type | Stepper |
| Supported motor types | Two-phase bipolar or unipolar hybrid stepper motors |
| Enclosed | Yes |
| Reconfigurable | Yes |
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Manufacturer
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C Series stepper drive
NI documents a SoftMotion user-defined-variable axis with LabVIEW FPGA drive-interface code.
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Product-specific answers based on available technical information.
Yes. NI's setup guide specifies a separate supply for the module and shows its connections to Vsup and COM.
NI provides a Stepper Drive (NI 9503) sample project that configures a user-defined-variable axis and includes FPGA code for the drive interface.
No. NI states that Steps Generated reports generated steps rather than feedback position, so it may not match actual feedback position.