IEC 61158 Specification
There were many competing technologies for fieldbus and the original hope for one single unified communications mechanism has not been realised. This should not be unexpected since fieldbus technology needs to be implemented differently in different applications; automotive fieldbus is functionally different from process plant control. The final edition of IEC standard IEC 61158 allows 8 technologies.This are the some hierarchic layer of the automation protocols.
IEC 61158 consists of the following parts, under the general title Digital data communications for measurement and control – Fieldbus for use in industrial control systems:
- Part 1: Overview and guidance for the IEC 61158 series
- Part 2: Physical Layer specification and service definition
- Part 3: Data Link Service definition
- Part 4: Data Link Protocol specification
- Part 5: Application Layer Service definition
- Part 6: Application Layer Protocol specification
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