A waveform display device is provided that extracts data of a required portion from data outputted from a numerical control. A waveform display device includes: a data acquisition part that acquires a predetermined type of data from output data outputted from a numerical control; a condition determination part that determines a start condition and end condition for extracting partial data from the predetermined type of data based on information from the numerical control; a data extraction part that extracts the partial data corresponding to the start condition and end condition from the predetermined type of data; and a waveform display part that displays the partial data extracted as a waveform.

In order to retrieve a specific block from a machining program, a numerical controller calculates the distance between a command path based on one of blocks included in the machining program and a current position of a tool and, based on the calculated distance, displays only that one of the blocks included in the machining program which is located closest to the current tool position or displays a plurality of blocks side by side in the ascending order of distance from the current tool position.

A waveform display device is provided that extracts data of a required portion from data outputted from a numerical control. A waveform display device includes: a data acquisition part that acquires a predetermined type of data from output data outputted from a numerical control; a condition determination part that determines a start condition and end condition for extracting partial data from the predetermined type of data based on information from the numerical control; a data extraction part that extracts the partial data corresponding to the start condition and end condition from the predetermined type of data; and a waveform display part that displays the partial data extracted as a waveform.

A teaching device teaches tasks to a polar robot including an extendable arm supported to be able to turn and vertically rotate, and generates and displays a process chart representing the outline of the tasks of the robot. In the process chart, a plurality of hand task graphic elements each expressed in a form corresponding to a kind of a hand task of the polar robot are disposed along a first axis in an order, each of the hand task graphic elements is disposed along a second axis orthogonal to the first axis in accordance with a height of a hand reference point, each of the hand task graphic elements is rotated in accordance with a turning angle of the arm, and the hand task graphic elements are linked by link lines between the hand task graphic elements, each link line expressing a change in expansion and contraction length of the arm or turning radius of the hand reference point in a form of at least one of changes in hue, chroma, brightness, and line width.

In order to retrieve a specific block from a machining program, a numerical controller calculates the distance between a command path based on one of blocks included in the machining program and a current position of a tool and, based on the calculated distance, displays only that one of the blocks included in the machining program which is located closest to the current tool position or displays a plurality of blocks side by side in the ascending order of distance from the current tool position.

An operating program writing system includes a block storing part which stores a plurality of blocks constituting work units of an operating program, a selecting part which selects any number of blocks from the plurality of blocks, a displaying part which displays a path diagram including the any number of blocks and arguments which are contained in the blocks, a selecting and inputting part which selects at least one block among the any number of blocks and inputs the arguments of the at least one block, a running part which arranges run buttons for the respective any number of blocks and runs blocks which correspond to the run buttons, and a writing part which uses the any number of blocks and the input argument of the at least one block as the basis to write an operating program.

A machining program editing assist apparatus includes a display controller. While the display objects are being displayed in either one of the program data display area and the process list display area, the display controller decides that a designated display object of the one of the display areas is the display object designated by the display objects of the one of the display areas and a specific point, differentiates the designated display object from the other display objects in the one of the display areas, decides that a designated display object of the other of the display areas is the display candidate of the other of the display areas, includes the designated display object in the display objects of the other of the display areas, and differentiates the designated display object from the other display objects in the other of the display areas.