Wireless device for capturing stranded data on field devices
First Claim
1. A method comprising:
- coupling an adapter device to a field instrument in an industrial control system to provide a wireless communication capability to the field instrument by;
connecting a first wire and a second wire of the adapter device to a positive wire of a current loop connected to a positive terminal of a communication module of the field instrument;
connecting a third wire and a fourth wire of the adapter device to a negative wire of the current loop connected to a negative terminal of the communication module of the field instrument; and
disconnecting the positive wire of the current loop between the first wire and the second wire and disconnecting the negative wire of the current loop between the third wire and fourth wire.
1 Assignment
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Accused Products
Abstract
A method includes coupling an adapter device to a field instrument in an industrial control system to provide a wireless communication capability to the field instrument. The method also includes connecting a first wire and a second wire of the adapter device to a positive wire of a current loop connected to a positive terminal of a communication module of the field instrument. The method also includes connecting a third wire and a fourth wire of the adapter device to a negative wire of the current loop connected to a negative terminal of the communication module of the field instrument. The method also includes disconnecting the positive wire of the current loop between the first wire and the second wire and the negative wire of the current loop between the third wire and fourth wire.
9 Citations
23 Claims
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1. A method comprising:
coupling an adapter device to a field instrument in an industrial control system to provide a wireless communication capability to the field instrument by; connecting a first wire and a second wire of the adapter device to a positive wire of a current loop connected to a positive terminal of a communication module of the field instrument; connecting a third wire and a fourth wire of the adapter device to a negative wire of the current loop connected to a negative terminal of the communication module of the field instrument; and disconnecting the positive wire of the current loop between the first wire and the second wire and disconnecting the negative wire of the current loop between the third wire and fourth wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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one or more field instruments in an industrial control system; a marshalling panel physically coupled to the one or more field instruments through a current loop; and an adapter device physically coupled to the marshalling panel and to a communication module of each of the one or more field instruments through the marshalling panel and through the current loop, the adapter device configured to; provide a wireless communication capability to each of the one or more field instruments, and receive data from each of the one or more field instruments. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An apparatus comprising:
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a field instrument comprising; a transmitter configured to communicate using a specified protocol; and an interface comprising a positive terminal and a negative terminal; wherein the positive terminal is (i) connected to a first portion of a positive wire of a current loop and (ii) connected to a second portion of the positive wire of the current loop via a first T-splice connection, an adapter device, and a second T-splice connection; and wherein the negative terminal is (i) connected to a first portion of a negative wire of the current loop and (ii) connected to a second portion of the negative wire of the current loop via a third T-splice connection, the adapter device, and a fourth T-splice connection, wherein the negative terminal is connected by the current loop to a marshalling panel. - View Dependent Claims (18, 19, 23)
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20. An apparatus comprising:
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an adapter device configured to be coupled to a field instrument in an industrial control system and to provide a wireless communication capability to the field instrument, the adapter device comprising; a wireless radio configured to transmit or receive information associated with the field instrument; and an interface configured to be coupled by a first wire and a second wire to a positive wire of a current loop connected to a positive terminal of a communication module of the field instrument, the interface also configured to be coupled by a third wire and a fourth wire to a negative wire of the current loop connected to a negative terminal of the communication module of the field instrument; wherein the interface and the first and second wires are configured to maintain the current loop when the positive wire of the current loop is disconnected between the first and second wires; and wherein the interface and the third and fourth wires are configured to maintain the current loop when the negative wire of the current loop is disconnected between the third and fourth wires. - View Dependent Claims (21, 22)
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Specification