NUMERICAL CONTROLLER HAVING AUTOMATIC TRACING FUNCTION OF RELATED SIGNAL INTERLOCKED WITH NC PROGRAM OPERATION

摘要

PROBLEM TO BE SOLVED: To provide a numerical controller having an automatic tracing function of a related signal which is interlocked with an NC program operation.SOLUTION: A numerical controller 1 that is equipped with a programmable controller 18 which inputs/outputs a signal on the basis of a ladder program, and controls a machine on the basis of an NC program comprises: an NC function related signal table 220 in which a function used for controlling a machine and an input-output signal are associated; a sampling signal table 230 for each function in which each signal in a dependency with the input-output signal is associated; a command analysis unit 120 which prefetches a block of the NC program and outputs a function code of a function commanded by the block; a trace signal extraction unit 160 which refers to each table on the basis of the function code output from the command analysis unit and specifies a signal being a target of automatic tracing; and a signal tracing unit 170 which traces the signal extracted by the trace signal extraction unit which is a target of automatic tracing.SELECTED DRAWING: Figure 2