FAQ for all variants of version 2.X

General operation

  • How can the language setting be changed? Open or Close

    Go to the Parameters menu and select the Misc... parameters. Click on the Language pop up and select your language. Click Save. Click OK. Exit WinPC-NC and restart it.


  • How can I use my Automatic Tool Changer (ATC)? Open or Close

    WinPC-NC USB has support for simple tool changers. More complex tool changes (e.g. revolver / turret / receptacle magazines, magazine position monitoring, collet monitoring) require WinPC-NC Professional.

  • Mode of operation of the surface sensor Open or Close

    This function requires an overhung sensor which can be set onto the workpiece or the sliding plate/grooved plate and which is then moved from above. By switching the contact WinPC-NC stores the current Z-position, adds up the gauge of the sensor derived from the parameters and determines the value as Z-zeropoint or as maximum Z-depth.

    This procedure means a simple method for measuring the surface automatically as zeropoint without the necessity for strenuous scratching.

  • How to use the tool length sensor? Open or Close

    A special steady-state sensor has to be attached for using this function. Some users arrange only for one pick-up in which the overhung sensor is inserted. This position is displayed under parameter-tool length as position of the length measuring sensor. If you now use tools of various lengths and want them to be automatically measured and compensated, you have to proceed as follows...

    • insert any kind of tool, preferably this one which has been used in the first job
    • defining the inserted tool in WinPC-NC via Change Dialog (Move – Change). Now, the corresponding tool number must be displayed in the status bar and the tool can be measured by Tool Dialog.Thus WinPC-NC is able to identify the reference tool and the corresponding length of the tool.
    • Now, the Z-zeropoint has to be determined, e. g. by scratching the surface
    • Start the job nowAfter finishing these steps, WinPC-NC starts the job and is able to measure the length of the new tool after each tool change. It ascertains the difference to the reference tool and compensates the value with each groove into the material.
  • Why am I experiencing lost steps or misalignment of axes? Open or Close

    The most frequent cause is motor chopping - a motor's rotor is not able to comply to the demands of its rotating magnetic field - and positioning becomes inexact. This is commonly known as losing steps.

    Common reasons are:

    • The motor is unable to overcome the mechanical load it is expected to handle.
      Dirt, dust, or chips may have accumulated on drive screws or another parts of the drive mechanism. Insufficient or improper drive mechanism lubrication. Accumulated damage to the drive mechanism (e.g. accumulated pitting) due to the reasons mentioned above.


    • Aggressive speed or acceleration settings.
      The stepper motor is being asked to perform actions that it cannot physically comply with. Use WinPC-NC Motor Test procedure (in the Special Functions menu) to better tune the stepper motor settings.


    • Mechanical resonances (due to vibrations).
      This problem appears when movements of a certain, critical speed are requested; they often appear at specific places within the work volume of the machine. Perform a systematic cleaning and lubrication of axes. If the problem persists, Use the WinPC-NC Motor Test procedure (in the Special Functions menu) to better tune the stepper motor settings. Pay particular attention to reducing the speed settings, especially the rapid speed.


    • Drop outs due to background Windows activities.
      Disable any Windows power saving features, especially those that affect USB ports.

      Older versions of WinPC-NC - where the stepper motors are driving directly via LPT ports -  may experience drop outs due to  background activities such as virus checkers, power saving settings, or networking activities. These activities will have to be disabled while WinPC-NC is running.


WinPC-NC Starter


WinPC-NC Economy / WinPC-NC Light (LPT)

  • „Data can not be displayed“ is issued when loading NC data Open or Close

    Unfortunately, WinPC-NC Light is not able to import and display any data except for 2D or2,5D data. These are the formats HPGL, PLT, ESP, AI, DXF(2D) and any kind of drilling data. For processing NC data in3D formats, e. g. G-codes or DIN/ISO you require the software WinPC-NC Economy or WinPC-NC USB.

  • Reasons for „Test time over“message after a while Open or Close

    A small blue USBdongle as copy protection is included in the package of WinPC-NC Economy and  a long-term operation is solely ensured if this device is plugged in a vacant USB port at the PC. In  the case of a missing or not correctly identified dongle WinPC-NC Economy runs always no longer than 5 – 7 minutes by realtime machine controlling. Afterwards operation is completely interrupted or still runs in a demo mode.

    Please check whether the dongle is correctly plugged and whether the corresponding LED lights up. If necessary, do not hesitate to contact us for the latest driver.

  • Why is it not possible to move faster than xxx ? Open or Close

    WinPC-NC is able to generate stepping rates up to 12kHz directly on the LPT port. According to the set resolutions parameters and deleted steps at the motor outputs a special maximum velocity is achieved.
    Stepping rates up to 24kHz can be issued by WinPC-NC Economy and up to 80kHz by WinPC-NC USB.

  • WinPC-NC Economy is correctly installed and runs but the machine does not move Open or Close

    One of the most important settings for the initial operation of WinPC-NC on your computer is the determination and registration of the LPT port address. This information is essential for WinPC-NC Economy in order to be able to use the correct commands and lines for operationg the LPT port with connected machine. In most cases the address can only be requested by the Windos device manager. Often the address of onboard LPT ports on the mainboard is 0378hex. The addresses of additional plug-in p.c.b.s is often four-digit, e. g. 8C00hex or 9D00hex. In any case it is absolutely necessary to check the correct address for the installed LPT port by the device manager. The instruction manual provides detailed information.



  • Is is possible to use a longer USB cable? Open or Close

    Yes... but high quality USB cables that ensure reliable operation are difficult to find. We can only certify proper operation when using the cable shipped from us.

  • The message "Failure in USB communication" appears. What's wrong? Open or Close

    All versions of the Windows operating system implement power management features. The power management features are responsible for switching off currently unused devices and switching them on again when they are required (e.g. your monitor is turned off after a period of inactivity; moving your mouse or touching your keyboard causes it to be turned back on).

    The power saving features also control USB ports and devices. This message appears when Windows has powered off the port necessary for accessing an nc100 or ncUSB . Locate the USB power management settings and disable all USB power management features.


WinPC-NC Professional

  • My computer does not have an RS232 port. Is it possible to use USB? Open or Close

    The CNCCONS external motion controller uses an RS-232C for its communications. Since todays machines no longer come with serial ports, a USB-to-RS232C adapter must be used. These adapters are widely available and cab purchased on the open marker or special ordered from us.

    The cost of a USB-to-RS-232C adapter is typically 25 EUR.

  • Old axis controller does not start and squeaks. What is wrong ? Open or Close

    The CPU boards integrated in our axis controllers are equipped with a battery with a 10 years service life. Starting problems or repeated squeaking may occur, if the battery gets weaker. In this case, please return the controllers or the CPU board. We will replace the battery and arrange for cold booting. We will charge approx. 75,00 EUR for this replacemennt or repair plus charges for returning the devices, any other existing defect will be charged additionally.

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