Siemens S7-300 appendix Profibus DP

Glossary

Process interrupt

A process interrupt is triggered by interrupt-triggering modules as a result of a specific event in the process. The process interrupt is reported to the CPU. The assigned organization block will be processed according to interrupt priority.

Process-Related Function

See PROFINET Component

Product version

The product version identifies differences between products which have the same order number. The product version is incremented when forward-compatible functions are enhanced, after production-related modifications (use of new parts/components) and for bug fixes.

PROFIBUS

Process Field Bus - European fieldbus standard.

See PROFIBUS DP

See PROFIBUS International

PROFIBUS Device

A PROFIBUS node has at least one or more PROFIBUS ports.

A PROFIBUS device cannot take part directly in PROFINET communication but must be included over a PROFIBUS master with a PROFINET port or an Industrial Ethernet/PROFIBUS link (IE/PB Link) with proxy functionality.

See Device

PROFIBUS DP

A PROFIBUS with the DP protocol that complies with EN 500170. DP stands for distributed peripheral I/O (fast, real-time, cyclic data exchange). From the perspective of the user program, the distributed I/O is addressed in exactly the same way as the central I/O.

See PROFIBUS

See PROFIBUS International

PROFIBUS International

Technical committee that defines and further develops the PROFIBUS and PROFINET standard.

Also known as the PROFIBUS User Organization (PNO). Home page www.profibus.com

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CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05