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GT-200 Series Motion Controller
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  GT-200 series motion controller is a universal controller developed by Googol Technology Ltd. The series have several product versions, GT-200-SV, GT-200-SG, widely used in applications ranging from simple point-to-point motion control equipment to highly complicated profile motion control equipment, such as measuring machine, engraving machine, NC lathe, machining center and robot.
Main Features
  • Adopt high-performance DSP and FPGA technology
  • Each card can control 2 servo/step motors
  • Programmable sampling rate. The minimum interpolation period of four axes is 200us. The minimum control period of single-axis point-to-point motion is 25us
  • Modes of motion: point-to-point motion, linear interpolation, circular interpolation, velocity control, interface to manual pulse generator, and electronic gearing
  • Programmable trapezoid curve planning and S-curve planning and update parameters on-the-fly
  • All registers for computational parameters and trajectory planning parameters are 32 bits
  • Hardware capture of 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 filter with velocity and acceleration feed-forward, and with integral limit and bias compensation (for SV card).
  • Network communication port (Ethernet, Profibus-DP, RS232, RS232/485) (Optional).
  • User-defined coordinate system for ease of programming
  • Coordinated motion of 2 axes, linear interpolation, and circular interpolation
  • Continuous interpolation function
  • On-board memory buffer to improve communication efficiency
  • Programmable event interrupt: external input interrupt, event interrupt and time interrupt
  • On-board EEPROM to update firmware and parameters
  • Drivers and DLL for Windows98/2000/NT, C and C++ function library
Technical Specification

Axis Channels

Ø       2 channels of 16-bit analog voltage output signal or pulse output signal with a frequency up to 1MHz

Ø       4 channels of quadrature incremental encoder input 2 channels used for feedback signal input of each axis, 2 channels are used for the auxiliary encoder input

Ø       Encoder sampling rate up to 8MHz

Ø       Flexible combination of analog voltage output and pulse output mode


Analog Input (Optional):

Ø       8 channels of independent 12-bit+10V analog input


Uncommitted Digital Input/Output:

Ø       16 channels of uncommitted opto-isolated digital input

Ø       16 channels of uncommitted opto-isolated digital output with


Dedicated Digital Input/Output:

Ø       Dedicated opto-isolated inputs for each axis: 2 channels for limit switch signal, 1 channel for home signal, and 1 channel for drive alarm signal input

Ø       Dedicated opto-isolated outputs for each axis: 1 channel for drive enable signal and 1 channel for drive alarm signal reset


Position Capture

1 channel of probe input for capturing the positions of 2 axes simultaneously, 1 channel of home capture signal and 1 channel Index capture signal for each axis


Bus Type:

Ø       Standard ISA/PCI104 bus.

Ø       Standard PCI bus.

Ø       Stand-alone through standard network interface (Optional).


System Software:

Ø       Demo software in Windows environment.

Ø       Windows 98/2000/NT equipment drivers.

Ø       C/C++ function library and demo software in DOS.


Power Consumption:

Ø       +5V, Icc=2A, power supplied from PC.

Ø       +12V, Icc=60mA,  power supplied from  PC.

Ø       +24V or +12V, Icc=2A, external power provided by user.



Ø       Operating temperature: 0 - 60J

Ø       Relative humidity: 5% - 90%, non-condensing


Mechanical Dimension: 

Ø       122mm x 185mm.








Number of Control Axes

Motor Type

Control Mode

PC Bus Type



Servo/Step Motor

Closed loop/Open loop

ISA/PC104 or PCI



Step Motor

Open loop

ISA/PC104 or PCI



Basic Accessories

Ø       ACC1 interconnect board & ACC4 60-pin flat cable.

Ø       ACC3 62-pin shielded cable (x2)


Ø       ACC2 terminal board.





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