On-line diagnosis and off-line diagnosis of CNC machine tools

Online diagnosis

On-line diagnosis refers to the automatic control of the numerical control device, PLC controller, servo system, PLC input / output and other external devices connected with the numerical control device by the control program of the numerical control system when the system is in the normal running state. , Test, and display the status information and fault information. In addition to displaying the alarm number and alarm content on the screen, the system also displays the status of NC internal flag registers and PLC operating unit in real time, which provides great convenience for fault diagnosis.

2. Offline diagnosis

When the numerical control machine tool CNC system failure or to judge is the ancient fault, it is often necessary to stop machining, and stop for inspection, this is off-line diagnosis. Offline diagnosis is to repair u systems and fault location, and strive to locate the fault as small as possible, such as reduced to a certain area or a module.

Dry-period NC devices use a diagnostic tape to perform off-line diagnostics on CNC systems Diagnostic tapes provide the data needed for diagnostics. Diagnostic tape will be read into the diagnosis of CNC equipment in the RAM, the microprocessor system based on the corresponding output data analysis to determine whether the system is faulty and to determine the location of the fault. Recent CNC system using the engineer panel , Modified CNC system or special test device for testing.