Model: PCI‑7340

Brand: NI (National Instruments)

Type: 4-axis high-performance stepper/servo motion control PCI card

Bus: 32-bit 5V PCI

Connector: 2 × 68-pin VHDCI (high density)

Driver: NI-Motion, LabVIEW Motion

Status: Out of Production (EOL), recommended as a replacement for PCIe‑7340

Core Overview

PCI‑7340 is an industrial-grade 4-axis high-end motion controller, featuring a 32-bit CPU + DSP + FPGA hard real-time architecture, specifically designed for high-precision, high-speed, multi-axis synchronous scenarios. It supports stepper/servo general, 3D interpolation, electronic gearing, contour control, onboard programming, and is suitable for complex trajectory, high synchronization, and high stability motion control applications in semiconductor equipment, precision machine tools, robots, optical platforms, and high-speed automated assembly lines. It integrates rich motion I/O + analog I/O + general DIO, with comprehensive functions, flexible programming, and precise timing.

1. Motion Control (Number of Axes)

4 axes independent / coordinated control (software selectable as stepper or servo)

Control mode:

Open loop: stepper (pulse / direction, up to 4 MHz / axis)

Closed loop: servo (encoder A/B/Z phase, up to 20 MHz)

Interpolation function: 3D straight line / circular arc interpolation, helical interpolation, electronic gear, contour control

Motion type: point-to-point, continuous trajectory, Jog, zero return, soft limit, multi-task motion program (up to 10 axes)

PID closed loop: servo PID update rate 62.5 μs ~ 5 ms, supports PIVff feedback

2. I/O Resources

Motion-specific I/O (per axis): positive/negative limit, origin, alarm, enable, breakpoint output, trigger input

General digital I/O: 32 channels TTL DI/DO (configurable)

Analog input (AI): 4 channels single-ended, 12 bits, ±10 V, 50 μs scanning rate

Analog output (AO): 4 channels, 16 bits, ±10 V

PWM output: 2 channels, 8 bits

3. Performance Indicators

Processor: 32-bit CPU + ADSP‑2185 DSP + FPGA, hard real-time motion planning

Synchronization accuracy: multi-axis synchronization error < 1 μs, supports RTSI bus synchronization of multiple cards

Trajectory smoothness: S-curve acceleration/deceleration, stepper smoothing algorithm

On-board programming: supports embedded motion program, runs independently from the host

4. Electrical and Environmental

Power supply: +5 V @ 1.14 A (typical 5.7 W)

Operating temperature: 0 ~ 55 °C

Size: standard half-length PCI card (175 × 107 mm)

5. Typical Applications

Semiconductor equipment (wafer positioning, mounting, inspection platform)

Precision CNC machines, engraving machines, laser cutting machines

Multi-axis robots, collaborative robots, automated assembly lines

Optical precision positioning platform, microscope control

High-speed closed-loop control, servo / stepper motor testing system