Invention Grant
- Patent Title: Sequence block display system
- Patent Title (中): 序列块显示系统
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Application No.: US471552Application Date: 1974-05-20
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Publication No.: US3964026APublication Date: 1976-06-15
- Inventor: Nobuharu Yamauchi , Masaji Matsumura , Katsuhide Morimoto , Haruo Koyanagi , Iwao Sato , Buhei Yasuhara , Jiro Sakai
- Applicant: Nobuharu Yamauchi , Masaji Matsumura , Katsuhide Morimoto , Haruo Koyanagi , Iwao Sato , Buhei Yasuhara , Jiro Sakai
- Applicant Address: JA Tokyo JA BOTH OF
- Assignee: Nissan Motor Co., Ltd.,Mitsubishi Denki Kabushiki Kaisha
- Current Assignee: Nissan Motor Co., Ltd.,Mitsubishi Denki Kabushiki Kaisha
- Current Assignee Address: JA Tokyo JA BOTH OF
- Priority: JA48-57454 19730522; JA48-57455 19730522
- Main IPC: G05B19/05
- IPC: G05B19/05 ; G06F3/14
Abstract:
In a programmable logic controller in which the control sequence for a controlled-objective such as a machine tool is stored in a memory unit, and the controlled-objective is automatically operated in a predetermined sequence according to the control sequence stored in the memory unit; a display system is provided in which a sequence block obtained from the control sequence stored in the memory unit is displayed in the form of a sequence diagram, particularly, a sequence diagram which includes symbols of control elements such as relays. A necessary sequence block is automatically obtained from the control sequence and is displayed. This display system is capable of displaying the states of the control elements, such as the on-off states of relay contacts.
Public/Granted literature
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