State restoration for a numerical controller after interruption of processing

摘要

A numerical controller that accurately restores a state in a resumption point and is capable of auto-generating a state restoring program for restoring to the resumption point without executing a machining program. The numerical controller is a numerical controller that carries out the machining according to the machining program, and has a restoring function for restoring the state at the time of suspension by using a resumption program created from the machining program. The restoring function includes the command extracting means (3) for extracting commands to execute machine operations from the resumption program and state restoring program creating means (6) which arranges the extracted commands in the order of programs of the machining program and creates the state restoring program. Miscellaneous function commands issued before the resumption point of the machining program and call commands such as macro commands to implement the preset operations are auto-created in the order of execution processing of the machining program in the state restoring program separately from the machining program without the operator's operation.