The self-diagnosis of the CNC system can not only display fault alarm information on the CRT display, but also provide machine parameters and status information in the form of multi-page "diagnosis address" and "diagnosis data". Common data and status checks include parameter check and There are two types of interface checks.
1) Parameter inspection The machine tool data of CNC machine tools are important parameters obtained after a series of tests and adjustments, and are the guarantee for the normal operation of the machine tool. These data include gain, acceleration, contour monitoring tolerances, backlash compensation and lead screw pitch compensation. When subjected to external interference, the data will be lost or confused, and the machine tool cannot work normally.
2) Interface check The input/output interface signals between the CNC system and the machine tool include the interface input/output signals between the CNC system and the PLC, and between the PLC and the machine tool. The input/output interface diagnosis of the CNC system can display the status of all switching signals on the CRT display, and use "1" or "0" to indicate the presence or absence of the signal. Using the status display, you can check whether the CNC system has output the signal to the machine tool. side, whether the switch signal on the machine tool side has been input to the CNC system, so that the fault can be located on the machine tool side or in the CNC system.
