SLAAEM2 October   2024 AM2434

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Real-Time Communication in Factories
    2. 1.2 Industrial Protocols
    3. 1.3 Serial and Ethernet-Based Communication Protocols
  5. 2Industrial Protocols
    1. 2.1 Ethernet-Based Communication Protocols
    2. 2.2 Network Topologies
    3. 2.3 OSI Layer Model
    4. 2.4 Industrial Ethernet System Block diagram
      1. 2.4.1 Two-Port Device
      2. 2.4.2 One-Port Controller
    5. 2.5 Ethernet Physical Layer (PHY)
    6. 2.6 Media Access Controller (MAC)
      1. 2.6.1 Device MAC
      2. 2.6.2 Controller MAC
    7. 2.7 Industrial Protocol Stacks
    8. 2.8 Industrial Communication Software Development Kit (SDK)
    9. 2.9 EtherCAT Device Example Using the AM243x Processor
  6. 3Conclusion

1.2 Industrial Protocols

Various industrial communication protocols exist, with no single dominant protocol. Different protocols have been established based on market segments such as process automation, factory automation, robotics, and motor drives. These range from serial communication protocols like HART and IO-Link to Ethernet-based protocols like EtherCAT, PROFINET®, and EtherNet/IP®.

In recent years, industrial Ethernet has taken the for front role over the serial based communication because Ethernet adds benefits, which are explained in Section 2.1.

Some protocols are designed to be interoperable with devices from different vendors, commonly seen in factory automation with PLCs, sensors, and actuators. The plan manufacturer purchases different types of vendors for a specific setup; therefore, different equipment from manufacturers needs to work together.

Other systems, such as CNC machinery or multi-carrier systems, which are enclosed systems, may use specialized or proprietary protocols that do not require interoperability with off-the-shelf devices. Nevertheless, such machinery are also built with standardized protocols if they do not need to take advantage of specific features of proprietary protocols.