PXI = PXI bus specification V2.0;7340 = 4‑axis analog servo + pulse stepper hybrid motion controller in NI 73XX motion family.

Axis Configuration：4 independent configurable axes (mix servo/stepper freely per axis)Servo Performance：±10 V 16‑bit DAC analog command output per servo axis, closed‑loop PID update rate 62.5 μs/axis, total 250 μs for full 4 axes; quadrature encoder input max 4 MHz, position register ±2³¹ countsStepper Performance：step/dir pulse output up to 4 MHz, min pulse width 120 ns, full/half/microstep programmable, open/closed‑loop optional with encoder feedbackAnalog I/O：8ch 16‑bit ±10 V analog feedback input for external position sensor/load cell; 4ch ±10 V servo command AODigital I/O：32‑channel bidirectional TTL DI/DO for limit/home switch, emergency stop, trigger & auxiliary interlockEnvironment：0~55 ℃ operating, -40~85 ℃ storage, RH 5%~95% non‑condensing; backplane power from PXI +5 V/+3.3 V rail

Front Connectors：dual independent 68‑pin SCSI connectors; one dedicated Motion I/O port for encoder, servo AO, limit/home signals; another General Digital I/O port for 32‑bit user IOBackplane Bus：standard PXI peripheral slot, access PXI trigger bus + RTSI synchronous bus for multi‑card multi‑chassis hardware sync (<100 ns jitter) with DAQ/DAQmx modulesSoftware Driver：NI‑Motion driver, compatible with LabVIEW, LabWindows/CVI, TestStand; pre‑built motion VI library for linear/circular interpolation, electronic cam, breakpoint capture programming

1.Full closed‑loop servo control: auto PID parameter tuning, position/velocity/acceleration three‑loop regulation, following error alarm & hardware stop2.Multi‑axis coordinated interpolation: linear, circular, helical contour motion for precision positioning platform3.Stepper open/closed loop switchable, microstep subdivision setup, stall detection via encoder feedback4.Hardware position capture & breakpoint trigger: sync DAQ sampling at designated axis coordinate for motion‑linked data acquisition5.Programmable positive/negative limit, home origin search, emergency inhibit safety logic via digital IO terminal

Semiconductor wafer probing & cutting platform control, PCB laser micro‑drilling equipment, automatic precision dispensing machine, automotive component durability test bench, lab multi‑axis positioning stage, legacy PXI automation test system spare replacement.

Use shielded twisted pair cable for encoder/servo wiring to suppress industrial EMI; confirm limit switch wiring before power‑on to avoid axis overtravel damage; static protection required during module plug/unplug; calibrate servo offset drift annually for long‑term positioning precision; avoid overvoltage exceeding ±12 V on analog terminals.