Control switching device
AssigneeMitsubishi Electric Corporation
InventorYoichiro Hamaya
Life of this patent
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Abstract
This control switching device includes: a first operating panel provided at a first place and having A1, A2 buttons connected to a first control device and B1, B2 buttons connected to a second control device; and a second operating panel provided at a second place and having a1, a2 buttons connected to the first control device and b1, b2 buttons connected to the second control device. The first control device includes a first determination circuitry which determines whether to shut down input/output to/from an input/output device located at the first place, using operation signals of the A1, A2, B1, B2 buttons from the first operating panel. The second control device also includes a second determination circuitry similar to the first determination circuitry.
Claims20
A control switching device for switching input/output to/from duplicated control devices from an input/output device located at a first place to an input/output device located at a second place, the control switching device comprising:
- a first operating panel having an A1 button and an A2 button connected to a first control device as the control device, and a B1 button and a B2 button connected to a second control device as the control device, the first operating panel being provided at the first place;
- a second operating panel having an a1 button and an a2 button connected to the first control device, and a b1 button and a b2 button connected to the second control device, the second operating panel being provided at the second place;
- and
- a network via which an operation signal of each button is sent/received between the first control device and the second control device, wherein
- the first control device includes first determination circuitry which determines whether or not to shut down input/output between the first control device and the input/output device located at the first place, on the basis of the operation signals of the A1 button, the A2 button, the B1 button, and the B2 button from the first operating panel, and determines whether or not to start input/output between the first control device and the input/output device located at the second place, on the basis of the operation signals of the a1 button, the a2 button, the b1 button, and the b2 button from the second operating panel, and
- the second control device includes second determination circuitry which determines whether or not to shut down input/output between the second control device and the input/output device located at the first place, on the basis of the operation signals of the A1 button, the A2 button, the B1 button, and the B2 button from the first operating panel, and determines whether or not to start input/output between the second control device and the input/output device located at the second place on the basis of the operation signals of the a1 button, the a2 button, the b1 button, and the b2 button from the second operating panel.
Dependencies are inferred from the claim text.