Safety network system, safety slave, and safety controller
First Claim
1. A safety slave which can be connected to a safety network and transmits the information based on the plurality of safety input informations managed by the safety slave in response to a request from a safety controller sent through the safety network, characterized by comprising:
- safety determination means for determining whether or not a safety condition is satisfied based on the plurality of safety input informations; and
means for transmitting a result of determination of safety determined by the safety determination means as the information.
1 Assignment
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Accused Products
Abstract
A safety network system is constructed by connecting a safety PLC to a safety slave through a safety network. The safety slave obtains safety input informations from a plurality of safety devices connected thereto and transmits information based on the plurality of safety input informations in response to a request from the safety PLC. At this time, the safety slave determines whether or not a safety condition is satisfied based on the plurality of safety input informations, includes two notification modes, that is, a result notification mode in which a result of determination of safety determined by the above determination is transmitted and a detailed information mode in which the plurality of safety input informations are transmitted as they are as aggregated data, and returns a safety response in any of the modes according to a command from the safety PLC. In the result notification mode, the response can be returned at a high speed because an amount of data is small, and, in the detailed information mode, detailed information can be secured.
62 Citations
11 Claims
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1. A safety slave which can be connected to a safety network and transmits the information based on the plurality of safety input informations managed by the safety slave in response to a request from a safety controller sent through the safety network, characterized by comprising:
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safety determination means for determining whether or not a safety condition is satisfied based on the plurality of safety input informations; and
means for transmitting a result of determination of safety determined by the safety determination means as the information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A safety slave which can be connected to a safety network and transmits the information based on the plurality of safety input informations managed by the safety slave to other nodes connected to the safety network, characterized by comprising:
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a safety determination means for determining whether or not a safety condition is satisfied based on the plurality of safety input informations; and
means for transmitting a result of determination of safety determined by the safety determination means as the information. - View Dependent Claims (11)
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Specification