The ExtraTech® M3545 is a next generation, Ethernet enabled, high performance motion controller with integrated I/O. ExtraTech has optimized this Linux-based controller to fit into a small space yet still provide a powerful motion engine and a modest amount of I/O to make a complete controller solution.  The unit supports six axes of motion, and includes I/O as well as serial and Ethernet TCP/IP communications.  It's two connectors for external motor drives are each optimized for stepper or servo application. 

key features:

  • Up to Six (6) Axis of Motion Control

  • Advanced Motion Control Functionality

  • Ethernet Connectivity

  • Two (2) EIA Communication Ports

  • Six (6) Outputs & Fifteen (12+2+1) Inputs

Supported motion:

  • Coordinated Motion for up to six (6) drives

  • Linear, Circular, and Smooth-Curve Interpolation

  • Linear and S-Curve Accelerations

Axis of Motion:

  • Two (2) Connectors for External Motor Drives, Each Optimized for:

    • Stepper Drives

    • Servo Drives

Inputs and outputs:


  • Four (4) Mechanical Relay, Dry Contact Outputs

  • Two (2) NPN Pulse Width Modulated Outputs

    • Suitable for 12-24V Solenoids or Relays, Directly


  • Twelve (12) Discrete Inputs

    • Suitable for homing (datum), over travel, pause, etc.

  • Two (2) Discrete Inputs for NPN Sources

  • One (1) 10-bit Analog Input (0-15V; 750 Hz Max Rate)

Emergency Stop Application

  • Two (2) Emergency Stop Input Terminals

The M3521 Advanced Motion Controller


  • Ethernet TCP/IP -- 10/100 Mb

  • Two EIA-232 Ports

    • Host Port

    • EIA-232 Keypad Port

  • Modbus Expansion Port

Software Support:

The M3521 can be programmed and driven by a wide variety of languages, including very elementary ones like BASIC. Or, the unit can be programmed with a specifically designed, commercial-off-the-shelf package in ExtraTech’s powerful Coreo platform.  Among other reach features, Coreo allows easy programming of coordinated motion, multiple types of interpolation, and sophisticated accelerations.


  • Dimensions: 16 x 10 x 4cm (6.3 x 3.9 x 1.75in)

  • Power Requirements: External 24VDC

If you're an OEM seeking a motion controller of a caliber seen on this page, have an annual usage of over 100 units, and are seeking a relationship with a trusted supplier with more than 25 years industry experience, please feel free to contact us and let us know if there’s something that we can do for you.