Field device
First Claim
1. A field device for connection to a programmable logic controller (PLC), the field device having hardware, and the hardware comprising:
- a processing circuitry,a memory, anda data interface for communication with the PLC,wherein the field device is configured to receive compatibility information from the PLC;
wherein a firmware having a plurality of functions for operating the field device is stored in the memory; and
wherein the field device determines which functions of the firmware of the field device are known to the PLC using the compatibility information and the processing circuitry is configured to release only a subset of the functions of the firmware that is known to the PLC for execution during an operation of the field device without booting based on checking the received compatibility information one-by-one against a predetermined association of each of the plurality of the functions and a firmware version number or date that allows release of the function respectively, and preclude functions, other than the subset of the functions, that currently reside on the field device from execution, based on the compatibility information to produce a behavior of the field device which is configured to adapt to the compatibility information and adopt a function and behavior of the field device with an older version of the firmware to conform to the current programming of the PLC, when the compatibility information does not require all of the functions of the firmware, and wherein the processing circuitry is configured, if none of the plurality of functions is suitable to produce the behavior of the field device configured to adapt to the compatibility information, to download a further firmware and to continue the operation of the field device with the further firmware by releasing further functions of the further firmware for execution simultaneously.
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Accused Products
Abstract
The invention relates to a field device for connection to a programmable logic controller having hardware comprising a processing unit, a memory and a data interface for communication with the programmable logic controller. The field device is characterized in that it is configured to receive compatibility information from the programmable logic controller by means of the data interface, wherein a firmware having a plurality of functions for operating the field instrument is stored in the memory, wherein the processing unit is configured to release a subset of the functions of the firmware for execution in dependence on the compatibility information to produce a behavior of the field device which is adapted to the compatibility information of the programmable logic controller.
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Citations
13 Claims
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1. A field device for connection to a programmable logic controller (PLC), the field device having hardware, and the hardware comprising:
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a processing circuitry, a memory, and a data interface for communication with the PLC, wherein the field device is configured to receive compatibility information from the PLC; wherein a firmware having a plurality of functions for operating the field device is stored in the memory; and wherein the field device determines which functions of the firmware of the field device are known to the PLC using the compatibility information and the processing circuitry is configured to release only a subset of the functions of the firmware that is known to the PLC for execution during an operation of the field device without booting based on checking the received compatibility information one-by-one against a predetermined association of each of the plurality of the functions and a firmware version number or date that allows release of the function respectively, and preclude functions, other than the subset of the functions, that currently reside on the field device from execution, based on the compatibility information to produce a behavior of the field device which is configured to adapt to the compatibility information and adopt a function and behavior of the field device with an older version of the firmware to conform to the current programming of the PLC, when the compatibility information does not require all of the functions of the firmware, and wherein the processing circuitry is configured, if none of the plurality of functions is suitable to produce the behavior of the field device configured to adapt to the compatibility information, to download a further firmware and to continue the operation of the field device with the further firmware by releasing further functions of the further firmware for execution simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of connecting a field device to a programmable logic controller (PLC), wherein the field device comprises a firmware having a plurality of functions, in which the method comprising:
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receiving, by the field device, compatibility information from the PLC by means of a data interface; and determining which functions of the firmware of the field device are known to the PLC using the compatibility information and releasing only a subset of the functions of the firmware that is known to the PLC for execution during an operation of the field device without booting. based on checking the received compatibility information one-by-one against a predetermined association of each of the plurality of the functions and a firmware version number or date that allows release of the function respectively, and precluding functions, other than the subset of the functions, that currently reside on the field device from execution, based on the compatibility information to produce a behavior of the field device which is configured to adapt to the compatibility information and adopt a function and behavior of the field device with an older version of the firmware to conform to the current programming of the PLC, when the compatibility information does not require all of the functions of the firmware, and if none of the plurality of functions is suitable to produce the behavior of the field device configured to adapt to the compatibility information, to download a further firmware and to continue the operation of the field device with the further firmware by releasing further functions of the further firmware for execution simultaneously.
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Specification