PROFIBUS Manual

FDL: data transmission

FDL: data transmission

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FDL: data transmission

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With PROFIBUS, uniform data transmission is the responsibility of the fieldbus data link (FDL) layer functions. These functions are identical for all PROFIBUS profiles.

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We can differentiate between the following functions:

 

-Medium Access and Control (MAC)

-Fieldbus Link Control (FLC)

-Fieldbus Management (FMA)

 

Each of these function groups makes specific services available and is implemented with specific functions.

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We can distinguish between services for data transmission and management services.