Efficient Addressing in Wireless Hart Protocol
First Claim
1. A method of providing a wireless extension to a wired protocol for transferring data to and from a field device operating in a process control environment via a wired connection, wherein the wired protocol and the wireless extension to the wired protocol have at least one protocol layer in common, the method comprising:
- associating a unique address consistent with an addressing scheme of the wired protocol with each of a plurality of wireless devices operating in the process control environment and forming a wireless network;
wherein a data packet is routed between two of the plurality of wireless devices based on the unique address;
associating a network identifier with the plurality of wireless devices;
forming, for each of the plurality of wireless devices, a global address including the respective unique address and the network identifier in accordance with a second addressing scheme; and
providing access to an external host operating outside the wireless network to each of the plurality of wireless devices based on the global address associated with the wireless device specified at the external host.
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Accused Products
Abstract
A method of providing a wireless extension to a wired protocol for transferring data to and from a field device operating in a process control environment via a wired connection, wherein the wired protocol and the wireless extension to the wired protocol have at least one protocol layer in common includes associating a unique address consistent with an addressing scheme of the wired protocol with each of a plurality of wireless devices operating in the process control environment and forming a wireless network, such that a data packet is routed between two of the plurality of wireless devices based on the unique address; associating a network identifier with the plurality of wireless devices; forming, for each of the plurality of wireless devices, a global address including the respective unique address and the network identifier in accordance with a second addressing scheme; and providing access to an external host operating outside the wireless network to each of the plurality of wireless devices based on the global address associated with the wireless device specified at the external host.
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Citations
17 Claims
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1. A method of providing a wireless extension to a wired protocol for transferring data to and from a field device operating in a process control environment via a wired connection, wherein the wired protocol and the wireless extension to the wired protocol have at least one protocol layer in common, the method comprising:
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associating a unique address consistent with an addressing scheme of the wired protocol with each of a plurality of wireless devices operating in the process control environment and forming a wireless network;
wherein a data packet is routed between two of the plurality of wireless devices based on the unique address;associating a network identifier with the plurality of wireless devices; forming, for each of the plurality of wireless devices, a global address including the respective unique address and the network identifier in accordance with a second addressing scheme; and providing access to an external host operating outside the wireless network to each of the plurality of wireless devices based on the global address associated with the wireless device specified at the external host. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication network operating in a process control environment, comprising:
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a first device having only a wired connection to a Distributed Control System (DCS) and supporting a wired protocol for transferring process control data;
the first device including a unique wired address associated with the wired protocol;a second device having a wireless connection to the DCS and supporting a wireless protocol for transferring process control data;
the first device including a unique wireless address associated with the wired protocol; anda routing device transferring data between the first device and the DCS and between the second device and the DCS based on an address associated with the wired protocol. - View Dependent Claims (11, 12, 13)
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14. A method of providing an efficient addressing in a wireless mesh network operating in a process control environment, the method comprising:
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associating a unique first address including a device identifier and a device type code with each of a plurality of wireless devices participating in the wireless mesh network; associating a unique second address with each of a plurality of wireless devices participating in the wireless mesh network; routing data between each of the plurality of wireless devices and at least one other of the plurality of wireless devices based on the unique first address or on the unique second address; and routing data between each of the plurality of wireless devices and a host operating outside the wireless mesh network based on a global address including the unique first address and a constant value associated with the wireless mesh network. - View Dependent Claims (15, 16, 17)
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Specification