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AssigneeFisher Controls International LLC
InventorKenneth William Junk
Estimating the term…
An example method to obtain process data associated with a process control system received from a field device includes identifying, at a computing device, associated data and a payload included in the data packet, the associated data including a source bit, determining, at the computing device, a type of connection between the field device and the computing device based on the source bit, determining, at the computing device, an encryption key identifier and an initialization vector based on an auxiliary data packet received prior to the data packet, generating, at the computing device, a nonce value based on the source bit and the initialization vector, the nonce value indicative of an input to a data encryption algorithm used by the field device to encrypt the payload, and extracting, at the computing device, the process data associated with the process control system from the payload.
A method to obtain process data associated with a process control system received from a field device, the method comprising:
A tangible computer readable storage medium comprising instructions that, when executed, cause a computing device to obtain process data associated with a process control system received from a field device, the computing device to at least:
A system to obtain process data associated with a process control system received from a field device, the system comprising:
Dependencies are inferred from the claim text.