Access protection accessory for an automation network
First Claim
1. An access protection accessory for an automation network which is connected to an automation installation configured to perform an automation process executable in at least two states, the access protection accessory comprising:
- a digital storage medium configured to store at least first rules and second rules;
a combinational logic module configured to perform scaling operations or linearization operations in which at least one measurement parameter is compared with at least one associated threshold value, and a state change is detected when the at least one measurement parameter is above or below the at least one associated threshold value;
network ports; and
a processor configured to read the at least first and second rules, process the at least first rules and second rules and receive and forward data from the access protection accessory through the network ports;
wherein the first rules, in a first state of the automation process, define which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory;
wherein the processor is further configured to receive at least one signal at the combinational logic module indicating a change in a state of the automation process and detect the change in the state of the automation process by evaluating the signal; and
wherein, following reception of the at least one signal, the second rules define which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory.
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Accused Products
Abstract
An automation network connected to an automation installation configured to perform an automation process executable in at least two states, where the access protection accessory comprises network ports, a digital storage medium configured to store at least first and second rules, and a processor configured to read the at least first and second rules, process the rules and receive and forward data via the network ports, and receive at least one signal comprising advice of a change in the state of the automation process. The first rules, in a first state of the automation process, define which received data are forwarded and which received data are not forwarded, and following reception of the at least one signal the second rules define which received data are forwarded and which received data are not forwarded.
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Citations
15 Claims
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1. An access protection accessory for an automation network which is connected to an automation installation configured to perform an automation process executable in at least two states, the access protection accessory comprising:
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a digital storage medium configured to store at least first rules and second rules; a combinational logic module configured to perform scaling operations or linearization operations in which at least one measurement parameter is compared with at least one associated threshold value, and a state change is detected when the at least one measurement parameter is above or below the at least one associated threshold value; network ports; and a processor configured to read the at least first and second rules, process the at least first rules and second rules and receive and forward data from the access protection accessory through the network ports; wherein the first rules, in a first state of the automation process, define which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory; wherein the processor is further configured to receive at least one signal at the combinational logic module indicating a change in a state of the automation process and detect the change in the state of the automation process by evaluating the signal; and wherein, following reception of the at least one signal, the second rules define which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An automation system comprising:
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at least one automation installation configured to perform an automation process; at least one automation network connected to the automation installation via an access protection accessory comprising a digital storage medium configured to store at least first rules and second rules, network ports, a combinational logic module configured to perform scaling operations or linearization operations in which at least one measurement parameter is compared with at least one associated threshold values, and a state change is detected when the at least one measurement parameter is above or below the at least one associated threshold value, and a processor arranged in the access protection accessory and configured to read the at least first rules and second rules, process the rules and receive and forward data from the access protection accessory through the network ports; wherein the first rules, in a first state of the automation process, define which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory; wherein the processor arranged in the access protection accessory is further configured to receive, through one network port of the network ports from the automation installation, at the combinational logic module at least one signal indicating a change in a state of the automation process and detect the change in a state of the automation process by evaluating the signal; and wherein, following reception of the at least one signal, the second rules define which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory.
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10. A method for operating an access protection accessory in an automation network connected to an automation installation configured to perform an automation process, the method comprising:
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performing the automation process in a first state; reading, first rules from a storage medium arranged in the access protection accessory by a processor arranged in the access protection accessory; forwarding data from the access protection accessory by applying the first rules, the first rules defining which data are forwarded from the access protection accessory and which data are not forwarded from the access protection accessory; receiving at least one signal at a combinational logic module arranged in the access protection accessory, said combinational logic module performing scaling operations or linearization operations in which at least one measurement parameter is compared with at least one associated threshold value, and a state change is detected when the at least one measurement parameter is above or below the at least one associated threshold value, and said at least one signal indicating a change in a state of the automation process; detecting the change in state by evaluating the signal by the processor arranged in the access protection accessory; reading second rules from the storage medium arranged in the access protection accessory; and forwarding the data from the access protection accessory, after detecting the change in state, by applying the second rules, the second rules defining which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory. - View Dependent Claims (11, 12, 13, 14)
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15. A non-transitory digital storage medium for an access protection accessory in an automation network connected to an automation installation configured to perform an automation process, the digital storage medium comprising program instructions which, upon execution by a processor arranged in the access protection accessory, prompt the access protection accessory to:
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perform the automation process in a first state and read first rules using the processor arranged in the access protection accessory; forward data from the access protection accessory by applying the first rules, the first rules defining which data are forwarded from the access protection accessory and which data are not forwarded from the access protection accessory; receive at least one signal at a combinational logic module arranged in the access protection accessory, said combinational logic module performing scaling operations or linearization operations in which at least one measurement parameter is compared with at least one associated threshold value, and a state change is detected when the at least one measurement parameter is above or below the at least one threshold values value, and said at least one signal indicating a change in the state of the automation process; read second rules from the database; and forward the data from the access protection accessory by applying the second rules after the at least one signal is received, the second rules defining which received data are forwarded from the access protection accessory and which received data are not forwarded from the access protection accessory.
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Specification