Hand held diagnostic and communication device with automatic bus detection
First Claim
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1. A hand-held diagnostic and communication device comprising:
- a first media access unit adapted to communicate over a process control loop in accordance with a first physical layer specification, the first media access unit being coupled to a first set of terminals;
a second media access unit adapted to communicate over the process control loop in accordance with a second physical layer specification, the second media access unit being coupled to a second set of terminals;
measurement circuitry coupled to the first and second media access units; and
a processor coupled to the measurement circuitry and adapted to interact with the measurement circuitry to automatically detect a connection between one of the first and second sets of terminals.
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Abstract
A hand-held communication and diagnostic tool is provided. The tool is able to automatically detect connection to a process control loop as well as detect the type of loop to which it is connected without substantially disturbing messaging on the loop. Once the tool determines the type of loop to which it is connected, it provides suitable communication and diagnostics appropriate to that specific type.
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Citations
16 Claims
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1. A hand-held diagnostic and communication device comprising:
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a first media access unit adapted to communicate over a process control loop in accordance with a first physical layer specification, the first media access unit being coupled to a first set of terminals;
a second media access unit adapted to communicate over the process control loop in accordance with a second physical layer specification, the second media access unit being coupled to a second set of terminals;
measurement circuitry coupled to the first and second media access units; and
a processor coupled to the measurement circuitry and adapted to interact with the measurement circuitry to automatically detect a connection between one of the first and second sets of terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hand-held diagnostic and communication device comprising:
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a first media access unit adapted to communicate over a process control loop in accordance with a first physical layer specification, the first media access unit being coupled to a first set of terminals;
a second media access unit adapted to communicate over the process control loop in accordance with a second physical layer specification, the second media access unit being coupled to a second set of terminals;
measurement circuitry coupled to the first and second media access units; and
a processor coupled to the measurement circuitry and adapted to interact with the measurement circuitry to automatically detect a loop type once the device is connected to a process control loop. - View Dependent Claims (12)
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13. A method of communicating with a process control device on a process control loop, the method comprising:
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coupling an handheld communicator to the process control loop;
identifying loop type without substantially disturbing loop operation; and
adapting loop communication based upon the identified loop type. - View Dependent Claims (14, 15, 16)
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Specification