GT-800 Series Motion Controller

The GT-800 series motion controller is an 8-axis controller which provides more control axes and functionalities than the GT-400 series. Providing high-performance and flexibility, the GT-800 is applicable to the control of multiple-axis equipment such as PCB drilling and milling machines.


  • Adopt high-performance DSP and FPGA technology
  • Each card can control 8 servo/step motors
  • Sampling period is programmable. The minimum interpolation period of eight axes is 400µs. The minimum control period of single-axis motion is 25 µs
  • Motion mode: point-to-point motion, linear interpolation, circular interpolation, velocity control, manual pulse generator interface, and electrical gear. Programmable T-curve planning and S-curve planning. On-the-fly update motion control parameters
  • All the position and parameter registers are of 32 bits
  • Hardware capture home switch and index signal of encoder
  • Set following error limit, acceleration limit and output limit, to ensure safe and reliable control
  • PID (Proportional-Integral-Derivative) digital filters with velocity and acceleration feed-forward, and integral limit and output bias compensation.

Technical Specification:

Dedicated Digital Inputs/Outputs:

  • Dedicated opto-isolated inputs: 2 for limit switches, 1 for home switch and 1 for driver alarm signal input for each axis.
  • Dedicated opto-isolated outputs: 1 for driver enable signal and 1 for reset driver alarm signal for each axis.
  • 3 dedicated inputs for protection: Abrupt stop, door stop and logical stop.
Software Characteristics:
  • User-defined coordinate system for ease of programming.
  • 4-D coordinate motion.
  • Continuous interpolation
  • Motion command buffer for increasing communication efficiency.
  • Programmable event interrupt: External input interrupt, event interrupt and timer interrupt.
  • EEPROM for updating Firmware and system parameters.
  • Windows98/2000/NT/XP drivers and DLL, C and C++ function library.
Channels of Input/Output:
  • 8 channels of output, ±10V analog voltage with16-bit resolution control signal
  • 8 channels of quadrature incremental encoder input for the feedback of each axis.
  • 4 channels of quadrature incremental encoder input for the auxiliary encoder input.
  • Encoder sampling rate up to 8MHz.
  • 2 channels of D/A output.
  • 8 channels of spindle encoder input with 8-bit resolution and sampling rate up to 8MHz.
Output Range:
  • Position; 32-bit (2.15 billions of pulses)
  • Velocity: Up to 8 millions of pulses/second for servomotor.
  • Acceleration: Up to 16 millions of pulses/second/second.
Uncommitted Digital Input/Output:
  • 37 opto-isolated digital inputs
  • 2 opto-isolated digital outputs
  • Serial IO port for IO expansion up to 128 digital inputs/output (Optional).
Memory Size:
  • On-board motion command buffer up to 4K bytes (expandable to 256K bytes) and 8K bytes non-losable RAM for storing parameter
Position Capture:
  • 1 channel of probe input for capturing positions of four axes simultaneously
  • 1 channel of home hardware capture signal for each axis
  • 1 channel index hardware capture signal for each axis
Bus Interface:
  • ISA/PC104 bus.
  • PCI bus.
  • Stand-alone with network control interface (Optional).
Power Consumption:
  • +5V, Icc=3A, internal power provided by PC.
  • ±12V, Icc=60mA, internal power provided by PC.
  • +24V or +12V, Icc=2A, internal power provided by PC.
Operating Environment:
  • Operating temperature: 0 - 60°C
  • Relative humidity: 5%-90%, non-condensing.
System Software:
  • Windows 98/2000/NT/XP drivers and DLL.
  • C/C++ function library and demo software for DOS
Mechanical Data:
  • Dimensions: 122mm x 185 mm
  • General weight: 2
Basic Accessories:
  • GT-800-ACC1 I/O board.
  • GT-800-ACC2 terminal board.
  • GT-800-ACC3 62-pin shielded cable (x2)
  • GT-800-ACC4 60-pin flat cable



Ordering Guide

Model No of Axes Motor Type Control Mode PC Bus Type
Pulse output & Open Loop control
ISA / PC104 or PCI
Servo / Step
Analog output & close loop control
ISA / PC104 or PCI


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