And molding machine logic graph display device, the logic graph display method

摘要

PROBLEM TO BE SOLVED: To provide a logic graph displaying apparatus of a molding machine which can unfailingly capture even an extremely small on/off-variation of an I/O signal and can display it.SOLUTION: A logging datum of a signal identifier having changed in an on/off-state among signal identifiers which output I/O signals concerning a molding operation is stored in a ring buffer. A logging screen 70 includes a plurality of identifier displaying parts 71, a logic graph display part 72 for displaying logic graphs related to the signal identifiers, respectively, and first and second cursors 81, 82. When one of the plurality of identifier displaying parts 71 displayed on the logging screen 70 is operated to turn on, the logging screen is changed to an input window. If a desired signal identifier is inputted in an input column of the input window, the logging datum of the signal identifier is read from the ring buffer and the logic graph is displayed in the logic graph display part 72. The logic graph displayed can be enlarged, and positions of the cursors 81, 82 can be changed.