What is the Difference between Profibus and Profinet?

00:05:28
https://www.youtube.com/watch?v=YxF9QgRAx8A

Summary

TLDRThe video discusses the differences between PROFIBUS and PROFINET, two industrial communication protocols used in Siemens control systems. PROFIBUS, established in 1993, utilizes a DB9 serial connector and purple cables, supporting up to 127 devices with speeds ranging from 9,600 to 12 Mbps. In contrast, PROFINET is a newer Ethernet-based protocol that employs RJ45 connectors and green cables, operating at 100 Mbps with a maximum cable length of 100 meters. The video highlights the unique addressing systems of both protocols and emphasizes the growing preference for PROFINET due to its speed and flexibility, making it essential knowledge for control engineers.

Takeaways

  • 🔌 PROFIBUS uses a DB9 connector and purple cables.
  • 🌐 PROFINET uses an RJ45 connector and green cables.
  • ⚡ PROFIBUS supports speeds from 9,600 to 12 Mbps.
  • 🚀 PROFINET operates at 100 Mbps, ideal for high-speed applications.
  • 📏 PROFIBUS cables can be up to 1,000 meters long.
  • 📏 PROFINET cables are limited to 100 meters.
  • 🔢 PROFIBUS can connect up to 127 devices.
  • 🆔 PROFINET devices have IP, MAC addresses, and unique device names.
  • 🔄 PROFIBUS requires terminating resistors for network integrity.
  • 📈 PROFINET is becoming the preferred protocol due to its flexibility.

Timeline

  • 00:00:00 - 00:05:28

    The video introduces PROFIBUS and PROFINET, two distinct industrial communication protocols used in Siemens control systems. Despite their similar names, they differ significantly in terms of cables, connectors, and operational characteristics. PROFIBUS, established in 1993, is a widely used protocol with over 50 million devices installed by 2017, utilizing a DB9 serial connector and purple cables. It supports up to 127 devices with unique addresses and operates at speeds ranging from 9,600 bps to 12 Mbps, with a maximum cable length of 1,000 meters. In contrast, PROFINET is a newer Ethernet-based protocol that uses RJ45 connectors and green cables, operating at 100 Mbps with a maximum cable length of 100 meters. PROFINET is preferred for high-speed applications due to its rapid response time and flexibility, making it essential for automation engineers to understand both protocols.

Mind Map

Video Q&A

  • What is PROFIBUS?

    PROFIBUS (Process Field Bus) is an industrial communication protocol established in 1993, widely used in control applications.

  • What is PROFINET?

    PROFINET is a newer Ethernet-based industrial communication protocol that operates at higher speeds.

  • What type of connectors do PROFIBUS and PROFINET use?

    PROFIBUS uses a DB9 serial connector, while PROFINET uses a standard RJ45 Ethernet jack.

  • What is the maximum length of PROFIBUS and PROFINET cables?

    PROFIBUS cables can be up to 1,000 meters long, while PROFINET cables can be up to 100 meters.

  • What are the speeds of PROFIBUS and PROFINET?

    PROFIBUS operates at speeds from 9,600 to 12 Mbps, while PROFINET operates at 100 Mbps.

  • How many devices can be connected to a PROFIBUS network?

    Up to 127 devices can be connected to a single PROFIBUS network.

  • What types of addresses do PROFINET devices use?

    PROFINET devices use an IP address, a MAC address, and a unique device name.

  • Why is PROFINET preferred over PROFIBUS?

    PROFINET is preferred due to its higher speed, flexibility, and compatibility with standard Ethernet equipment.

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  • 00:00:02
    profibus and pro finet our industrial
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    communications protocols used
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    extensively by Siemens control systems
  • 00:00:09
    while they may sound similar don't let
  • 00:00:12
    the name fool you PROFIBUS and pro finet
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    are very different protocols that use
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    different cables and connectors let's
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    take a look at these protocols and learn
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    how they differ from one another
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    released in 1993 PROFIBUS or process
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    filled bus is a tried-and-true
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    industrial communication protocol
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    with over 50 million devices installed
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    by the end of 2017
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    it is a well-established technology used
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    in many different control applications
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    a PROFIBUS connection port may look very
  • 00:01:18
    familiar to you it looks just like a
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    standard db9 serial connector while it
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    may look the same the underlying
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    protocol is very different
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    most PROFIBUS cable looks like this it
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    is easily recognizable by its purple
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    outer jacket
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    some profibus connectors have a
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    pass-through port on the back of the
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    connector so that you can daisy chain
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    another device to the bus
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    note that both kinds of connectors have
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    a red switch on the back this switch
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    controls the terminating resistor the
  • 00:01:56
    terminating resistor indicates the end
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    of the PROFIBUS network this switch must
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    be set to the on position on the last
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    device and off for every other device if
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    these switches are set incorrectly a bus
  • 00:02:11
    fault will occur
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    each device on a
  • 00:02:16
    a bus network must have a unique address
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    ranging from 1 to 127 this means that up
  • 00:02:24
    to 127 devices may reside on a single
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    PROFIBUS network for some devices the
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    address will be set using step 7 or TI a
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    portal for others the address must be
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    configured using dip switches located on
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    the front of the device
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    profibus networks operate at speeds of
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    9,600 bits per second to 12 megabits per
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    second while PROFIBUS cables may be up
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    to 1,000 meters long shorter cable
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    lengths are required for higher data
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    rates
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    profe Annette is a newer ethernet-based
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    industrial communications protocol the
  • 00:03:05
    physical interface used for pro finet is
  • 00:03:08
    a standard rj45 Ethernet jack
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    profe Annette cables are easily
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    recognizable by their green color while
  • 00:03:17
    in some cases a standard Ethernet cable
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    may be used to connect to Pro finet
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    devices official profile net cables
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    should be used as they contain robust
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    shielding enter designed to function
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    well in harsh industrial environments
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    Pro finet operates at 100 megabits per
  • 00:03:37
    second and cables maybe up to 100 meters
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    in length due to its high-speed
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    operation and a response time of less
  • 00:03:45
    than one millisecond pro finet is ideal
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    for high-speed applications because pro
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    finet uses the same physical connection
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    standards as Ethernet standard Ethernet
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    switches can be used to expand your
  • 00:03:59
    network
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    Pro finet devices have three different
  • 00:04:03
    types of addresses an IP address a MAC
  • 00:04:07
    address and a device name
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    all a thern ette devices use IP
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    addresses and MAC addresses but the
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    device name is unique to Pro finet
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    devices as an automation engineer you
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    will be primarily concerned with device
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    names and IP addresses as you configure
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    your Pro finet networks
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    due to its higher speed and greater
  • 00:04:33
    flexibility Pro finet is becoming the
  • 00:04:36
    preferred communications protocol for
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    industrial application
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    both protocols are widely used today and
  • 00:04:44
    being familiar with both of them will be
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    essential to your job as it controls
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    engineer
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    want to learn PLC programming in an
  • 00:04:55
    easy-to-understand format and take your
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    career to the next level head on over to
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    real parse com
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    [Music]
Tags
  • PROFIBUS
  • PROFINET
  • industrial communication
  • Siemens
  • Ethernet
  • protocols
  • automation
  • control systems
  • networking
  • PLC programming