SYSTEM AND METHOD FOR CONTROLLING ACCESS TO LOCAL SERVICES WITHOUT LOSING FAILOVER CAPIBILITY
First Claim
1. A method of controlling access to electronic devices in an automation network while maintaining failover capability, comprising:
- setting a state of a networked device to an online state;
sending a communication from the networked device to a controller requesting permission to change state of the networked device;
waiting a predetermined amount of time to receive permission to change state; and
changing the state of the network device without permission from the controller after the predetermined amount of time has passed.
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Accused Products
Abstract
A system and method are provided for controlling access to local electronic devices in an automation network while maintaining failover capability. The method can include the operation of setting a state of a networked device to an online state. Another operation is sending a communication from the networked device to a controller requesting permission to change state of the networked device. The networked device may wait a predetermined amount of time to receive permission to change state. The state of the network device can change without permission from the controller after the predetermined amount of time has passed.
83 Citations
17 Claims
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1. A method of controlling access to electronic devices in an automation network while maintaining failover capability, comprising:
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setting a state of a networked device to an online state;
sending a communication from the networked device to a controller requesting permission to change state of the networked device;
waiting a predetermined amount of time to receive permission to change state; and
changing the state of the network device without permission from the controller after the predetermined amount of time has passed. - View Dependent Claims (2, 3, 4, 5)
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6. A system for controlling access to local electronic devices in an automation network while maintaining failover capability, comprising:
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a networked device that is set to an online state;
a controller configured to receive communications from the networked device requesting permission to change state of the networked device;
a communication network that is configured to transport communications between the networked device and the controller; and
a processing device in the networked device configured to wait a predetermined amount of time to receive permission to change state, wherein the network device will change state without permission from the controller after the predetermined amount of time has passed. - View Dependent Claims (7, 8, 9, 10)
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11. A method of controlling access to a networked device in an automation network while maintaining failover capability, comprising:
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sending a communication from the networked device to a controller requesting permission to change state of the networked device;
waiting a predetermined amount of time to receive permission to change state;
changing the state of the network device without permission from the controller after the predetermined amount of time has passed and no response has been received from the controller; and
setting the state of the network device to an offline state. - View Dependent Claims (12, 13, 14, 15)
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16. A system for controlling access to electronic devices in an automation network while maintaining failover capability, comprising:
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an automation device that is set to an online state;
a controller configured to receive communications from a networked device requesting permission to change state of the networked device;
a communication network that is configured to transport communications between the networked device and the controller; and
a timing module in the networked device configured to wait a predetermined amount of time to receive permission to change state, wherein the network device will change state without permission from the controller after the predetermined amount of time has passed. - View Dependent Claims (17)
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Specification