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US 7,856,278 B2Granted
Programmable controller device
AssigneeOMRON Corporation
InventorHideo Okeda
Life of this patent
Estimating the term…
Abstract
A programmable controller device has a main body with a CPU unit and I/O units connected by a bus line and a power unit for supplying power to the main body. The CPU unit has a memory with a user access area which is accessible by instruction of user program. The power unit generates status data related to itself such as its temperature. A data transmission path is provided between the CPU unit and the power unit for transmitting such status data to the user access area.
Claims11
A programmable controller device comprising:
- a programmable controller main body having a CPU unit and one or more I/O units connected by a bus line which connects to one or more expansion units through connecting bus lines;
- a power unit for supplying power to said programmable controller main body;
- each said one or more expansion units comprising a power unit for supplying power to a corresponding one of said one or more expansion units;
- and
- a data transmission path formed by a serial bus line and provided between said CPU unit and said power units;
- wherein said CPU unit has a memory with a user access area which is accessible by instruction of a user program and has dedicated areas assigned individually to said one or more expansion units and said programmable controller main body;
- wherein said power units have status data generating means for generating status data related to a said power units;
- wherein said status data generated by said status generating means are transmitted to said user access area;
- wherein a data transmission path formed by a serial bus line for transmitting status data generated by said status generating means to said user access area is provided between said CPU unit and said power units;
- wherein said user program is created and altered by the user of said programmable controller main body such that a control desired by the user can be carried out by executing said user program;
- wherein a user has only to insert dedicated commands corresponding to said user access area into said user program in order to access said status data.
8 more elements
A programmable controller system comprising:
- a main body;
- one or more expansion units;
- and
- a bus line that connects said main body with said one or more expansion units;
- wherein said main body comprises:
- a programmable controller main body having a CPU unit and one or more I/O units connected by a bus line;
- and
- a power unit for supplying power to said programmable controller main body;
- wherein said CPU unit has a memory with a user access area for individual units which is accessible by instruction of a user program and has dedicated areas assigned individually to said one or more expansion units and said programmable controller main body;
- wherein said power unit has status data generating means for generating status data related to said power unit;
- wherein each of said expansion units comprises:
- one or more expansion I/O units connected through a bus line;
- an expansion power unit for supplying power to said one or more expansion I/O units, said expansion power unit including additional status data generating means for generating status data related to said expansion power unit;
- wherein said programmable controller system further comprises a data transmission path
- between said CPU unit and said power unit and between said CPU unit and the expansion power units for transmitting said status data generated by said status generating means and the additional status generating means to said user access area is provided between said CPU unit and said power unit;
- wherein said user program is created and altered by a user of said programmable controller main body such that a control desired by the user can be carried out by executing said user program;
- wherein the user has only to insert dedicated commands corresponding to said user access area into said user program in order to access said status data.
14 more elements
Dependencies are inferred from the claim text.