This white paper describes PROFINET in IT terms and shows how PROFINET relates to IT topology.  The adaptations required of Industrial Ethernet for environmental and functional purposes are described.

Executive Summary Excerpt

PROFINET, a market-leading Industrial Ethernet protocol, encompasses all levels of a network, ranging from the physical infrastructure to the Ethernet network access layer and the TCP/IP layer and finally to the application layer. The structures and topologies of conventional network technology used in IT and in automation differ only in the machine-level area of the automation system. As a result, PROFINET can be easily integrated into existing network environments.

Table of contents

  1. Executive Summary
  2. Motivation
  3. Industrial Ethernet: Profinet
    1. Different approaches for Industrial Ethernet PROFINET – Overview
  4. Specific conditions in automation
    1. Network structure and network nodes
    2. Communication structure
    3. Bit rate and packet rate
    4. Addressing and subnetting
    5. Protocols used
    6. Real-time communication
    7. Environmental conditions
    8. Installation requirements
    9. Availability and redundancy
    10. Operation / management / diagnostics / remote access
  5. Network connection of automation and office
    1. Scenario 1 – Separate physical and logical networks
    2. Scenario 2 – Logical integration into the overall network
    3. Scenario 3 – Separate logical networks (closed user group)

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