The Mercury Step C-663 is a compact, high-resolution 1-axis stepper motor controller from Physik Instrumente (PI), a global leader in precision motion control systems. Designed for 2-phase stepper motors, this controller offers both open-loop and closed-loop operation modes, achieving an exceptional microstep resolution of 1/2048 of a full step. It is ideal for applications requiring smooth motion, high positioning accuracy, and minimal vibration, such as optical alignment, semiconductor manufacturing, and precision automation.
Product Type: 1-axis stepper motor controller
Motor Type: 2-phase stepper motors
Microstep Resolution: 1/2048 full step
Operating Modes: Open-loop operation, closed-loop operation
Motion Profiles: Point-to-point motion, trapezoidal velocity profile
Maximum Output Voltage: 48 V (supports fast-running motors even at lower operating voltages)
Communication Interfaces: USB, RS-232 (for commanding)
I/O Lines: Analog/digital lines for automation, analog joystick interface
Encoder Inputs: Differential signal transmission for digital (A/B) encoder signals
Limit/Reference Inputs: TTL inputs for limit and reference point switches; RS-422 input for index switch
Macro Language: Powerful macro command language with nonvolatile macro storage
Standalone Operation: Supports autostart macro for standalone use
Data Recorder: Built-in for motion tracking and diagnostics
Software Support: LabVIEW, C, C++, MATLAB, Python, PIMikroMove user software
Networking: Daisy chain networking for multi-axis systems
Operating Temperature: 0°C to +50°C

The C-663's 1/2048 microstep resolution significantly reduces step angle, resulting in ultra-smooth motion with minimal vibration and audible noise. This high resolution is particularly beneficial for applications requiring fine positioning and low-speed operation. The controller supports both open-loop operation for cost-effective applications and closed-loop operation with encoder feedback for high-accuracy positioning. The built-in PID controller optimizes motion performance, and parameters can be changed during operation for dynamic adjustment.
The C-663 offers flexible connectivity through USB and RS-232 interfaces, with differential encoder inputs for precise position feedback. TTL inputs accommodate limit and reference point switches, while an RS-422 input supports index switch connections. The controller is networkable via daisy chain, allowing up to 16 units to be combined for multi-axis motion systems. Comprehensive software support includes drivers for LabVIEW, dynamic libraries for Windows and Linux, and support for C, C++, MATLAB, and Python, enabling seamless integration into custom applications. The PIMikroMove user software provides an intuitive interface for configuration and motion control.
The Mercury Step C-663 is used in photonics and optical alignment (laser beam steering, fiber positioning), semiconductor manufacturing (wafer inspection, die bonding), precision automation (pick-and-place, micro-assembly), test and measurement equipment, and laboratory automation for sample positioning and scanning stages.



