Numerical controller and variable determining method

A numerical controller configured to perform an automatic operation by executing a machining program after look-ahead and analyzing the machining program, together with carrying out a predetermined process apart from the automatic operation by executing a predetermined program in parallel with the automatic operation, wherein the machining program and the predetermined program contain a same variable, comprising:

• a first access unit configured to access the variable included within the machining program at a time of analyzing the machining program;
• a second access unit configured to access the variable included within the predetermined program at a time of executing the predetermined program;
• a specific variable determining unit which, in an event that the first access unit and the second access unit have accessed the same variable within a predetermined time period, is configured to determine that the variable accessed during the predetermined time period is a specific variable;
• and
• an output unit configured to output at least one of number of the variable determined to be the specific variable by the specific variable determining unit, and times at which the first access unit and the second access unit have accessed the variable determined to be the specific variable.

A variable determining method which is used in a numerical controller configured to look ahead and analyze a machining program, comprising:

• an accessing step of accessing a variable included within the machining program at a time of analyzing the machining program;
• a look-ahead determining step of determining whether or not the accessed variable was accessed during look-ahead of the machining program;
• a specific variable determining step of determining whether or not the variable determined to have been accessed during look-ahead is a specific variable;
• and
• an outputting step of outputting at least one of number of the specific variable accessed during look-ahead and a time of accessing the specific variable during look-ahead, in an event that the variable accessed during look-ahead is determined to be the specific variable.

A variable determining method which is used in a numerical controller configured to perform an automatic operation by executing a machining program after look-ahead of and analyzing the machining program, together with carrying out a predetermined process apart from the automatic operation by executing a predetermined program in parallel with the automatic operation, wherein the machining program and the predetermined program contain a same variable, comprising:

• a first accessing step of accessing the variable included within the machining program at a time of analyzing the machining program;
• a second accessing step of accessing the variable included within the predetermined program at a time of executing the predetermined program;
• a specific variable determining step of, in an event that the first accessing step and the second accessing step have accessed the same variable within a predetermined time period, determining that the variable accessed during the predetermined time period is a specific variable;
• and
• an outputting step of outputting at least one of number of the variable determined to be the specific variable, and times at which the first accessing step and the second accessing step have accessed the variable determined to be the specific variable.