Offline CNC Controller Reviews 2023

What is an offline CNC controller?

Offline cnc controller also called stand-alone cnc controller, has the functions of a computer and motion control card
It can work without connecting the motion control card to the computer. It only needs to remove the old control card and connect the drive directly to the offline controller.
The two types of cnc controllers are connected in the same way, but the offline controller eliminates the need to open the computer to read the tool path and work again. The offline controller has a G- that can directly read the U disk or TF card code file, some offline cnc controllers can take over the wheel.
The advantages of the offline controller are simplicity, convenience, and reduced interference. 


In the process of engraving, I often encounter computer system crashes, computer card processing is interrupted, communication lines are disturbed, and power is suddenly interrupted during processing.

To get rid of these problems, you can take an offline cnc controller and take offline control. Compared with the traditional engraving machine, it does not need to be equipped with a special computer, which can save a lot of trouble.

Offline CNC controller vs PC


1, Offline and convenient and intuitive, similar to the operation of the machining center
2, If you do a lot of duplicates, offline is more convenient, I used to use a notebook, and I have been charging all the time, more trouble
3, Support power-off continuous carving function
4, Offline stability, In fact, it is easier to operate than mach3


CNC Offline controller does not support the network. This is the worst. If there are many machines, use a computer and share a disk. Everyone is going to read the knife path. It is more convenient than using a USB disk. It is fast. , the version is easy to control, and the U disk is also easy to break.

Offline CNC Controller Reviews

SMC4-4-16A16B Offline CNC Controller

SMC4-4-16A16B Review

The cnc controller has a 50KHZ pulse output frequency and can set, process, and operate various control parameters, to reach the optimal effect.
The built-in keyboard can be used to input commands without connecting to a computer, with the function of setting radians and interpolation.
The openness is relatively high. and 4-axis linkage is very important.


  •  Parameter setting: Can set, process, and operate various control parameters, to reach the optimal effect.
  •  Operate by Hand: Can control your system by hand in this controller Don’t need to connect a PC.
  • Program management: This controller can be built, delete, modified, read, save, automatic processing, continuously, paused, and other functions.

Technical Information:

  • The smallest date unite: 0.0001mm
  • The  biggest date unite: ± 99999.999mm
  • The highest frequency of pulse output: 50KHz (The 4 axes can reach 50KHZ at the same time)
  • Control axis: 4 axes (X, Y, Z, A axis) 


About SMC4-4-16a16b video SMC4-4-16A16B Offline CNC controller

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SMC5-5-N-N CNC Controller

SMC5-5-N-N is the SMC4-4-16A16B upgrade version. It is a 5-axis linkage.

The new model has a 7-inch touch screen and power-off hold function (I think you must like this function). Special attention is given to the maximum pulse output frequency 500KHz (five-axis can be simultaneous 500KHZ).
In addition, it can be connected to MPG and supports direct modification of buttons. Code. Custom I/O


  • Parameter Setting: Various control parameters related to processing and operation can be set to achieve the best processing results
  • Manual Operation: can be achieved manually, jogging back to the program zero, back to mechanical zero, clearing coordinate operations, etc. 
  • Program Management: program can create, delete, modify, read, save, save, automatic processing, continuous, and pause
  • External IO Input: a variety of external IO input controls can be defined for convenience using 
  • Free Selection of Input Functions: the limited input port can achieve various users’ needs
  • Hand Wheel: hold an external hand wheel to control input or host panel advanced function key analog hand wheel, hand wheel support speed mode or position mode

About SMC5-5-N-N video SMC5-5-N-N Offline cnc controller

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DDCSV CNC controller DDCSV2.1

DDCSV2.1 Offline Controller Support 3 axis/4 axis USB CNC controller



  • x1, x10, x100 switch  
  • X, Y, Z, Ath axis selector switch  
  • LED indicator  
  • With Emergency stop  
  • High-quality professional chassis  
  • 6ft extendable high-quality shielded cable cord  
  • The magnetic base holder can place anywhere on the machine’s steel surface  
  • Required 5V+, 150mA, power for MPG  
  • Phase output is A+/A-;B+/B-  
  • TTL output, drive capability +-20mA

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  • The input signal is modified to support the NPN switch; 
  • Support limit and the home share the input port; 
  • Use the more stable FLASH, to ensure that no program loss; 
  • Upgrade algorithm, support soft interpolation, modified V1.1 version of arc interpolation bug; 
  • Upgrade the power module, the system is more stable. 

DDCSV CNC controller DDCSV3.1

DDCSV3.1 3 / 4 Axis G Code CNC Offline Stand Alone Controller

The DDCS V3.1 is updated from DDCS V2.1, which fixes the bugs in software and hardware. DDCS V3.1 is a 4-axis motion controller for stepper and servo systems, the numerical control system adopts the ARM+FPGA design framework. ARM controls the human-computer interface and code analysis and the FPGA provides the underlying algorithms and creates the control pulse. This guarantees reliable control and easy operation.
The internal operating system is Linux based.


  • 16 opto-isolated digital inputs, 3 opto-isolated digital outputs
  • ARM9 main control chip;
  • FPGA core algorithm chip;
  • Jog function for each axis (continuous, step, defined distance;
  • Support the operation of quickly specifying the running position;
  • Support for “Power Cut” recovery. Data is automatically saved.

ddcsv video

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Control System Unit is compatible with Metric Units and Imperial Units;

MPG and extended Keyboard can also control and edit the controller system;

Add new function of “Try cutting”(handwheel guiding) and “Single-stage processing mode” ;

3 kinds Probing Modes:Fixed Position of tool sensor,Floating Position of the tool. sensor,Rectangular block Sensor;

Enhanced the software,added a lot of parameters,Optimal Design and algorithm,makes.the new version more strong functions and steady;

The Option Language of the system is Chinese/English/Russian.

Version 3.1 cited the new circuit design and metal box,which can avoid the noise a lot.