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US 8,676,357 B2Granted
System and method for implementing an extended safety instrumented system
AssigneeFieldbus Foundation
InventorsHabil. Josef Boercsoek, Juergen Hoelzel, Hans-Dieter Wacker
Life of this patent
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Abstract
An apparatus, system and process is provided for communicating safety-related data, over an open system, from a sender to a receiver. Safety-related components, including function blocks, flexible function blocks, resource blocks and transducer blocks, as well as, safety-related objects are provided. Also, an extended safety-related protocol provides for authenticating communications between safety-related components over an existing black channel, such as one using a fieldbus Architecture.
Claims28
An apparatus comprising:
- a processor configured to communicate data to another apparatus by attaching a sequence number and an authenticator to data to form a data unit, the processor further configured to replicate the data, the sequence number, and the authenticator of the data unit to provide a replicated data unit, and output both the data unit and the replicated data unit together in a single output message;
- and
- a medium attachment unit, which translates the output message between the processor and a transmission medium.
Dependencies are inferred from the claim text.