Profibus vs profinet

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    16-Apr-2017
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Transcript of Profibus vs profinet

Engineering your Future

Engineering your Future

PROFINET Vs PROFIBUS

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PROFIBUSPROFIBUS is the worlds leading fieldbus system.PROFIBUS has been around for almost 25 years.High speed synchronized servo application( robotics and NC machines).Functional safety systems.Operation in hazardous environments.High availability systems.

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ABBPROFIBUS FAMILYPROFIBUS-DP- Decentralized PeripheryLow cost, simple, high speed field level communications.Generally designed for internal use (cabinet maunting)

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PROFIBUS PA- Process AutomationDeveloped specifically for the process industry to replace 4-20mA transmission.Two wire connection carrying both power and data.Generally designed for external use(field mounting).

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ABBPROFINETStandardized Industrial Ethernet.High speed highly deterministic and capable networking.Generally designed for internal use (just like DP)

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ABBCONNECTION TECHNOLOGIESPROFIBUS DP uses 2-core RS485 screened twisted pair wiring.9-pin sub-d or M12 connectors extensively used.DP can also use plastic or glass fiber optic cabling.PROFIBUS PA uses Manchester Bus Powered (MBP) cabling over 2 cores.PROFINET Uses 4-core Ethernet screened twisted pair cabling.RJ45 or M12 connectors universally used.

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PROFINET is the open and all-encompassing Industrial Ethernet solution.PROFINET has many features in common with PROFIBUS, including shared profiles, engineering and support.Its innovative IO solution makes it perfect for modern real-time applications.

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ABBSupporting DevicesProfibus supports two main type of devices, namely, masters and slaves.Master devices control the bus and when they have the right to access the bus, they may transfer messages without any remote request.Slave devices are typically peripheral devices i.e transmitters/sensor and actuators.

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ABBProfibus standards Profibus DP(master slave).Profibus FMS(multi-master/peer-to-peer).Profibus PA(intrinsically safe).

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ABBFUNCTION CLASSES OF PROFINETIn PROFINET have two function classes that are Independent of each other.Profinet IO: The distributed field devices are connected through the PROFINET IO .

PROFINET IO uses three different communication channels to exchange data with the control systems and other devices. The standard TCP/IP channel is used for parameterization, configuration and acyclic read/write operations.

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PROFINET CBA: This concept is designed for distributed industrial automation applications. The PROFINET CBA is built on the standard DCOM (Distributed Component Object Model) and RPC (Remote Procedure Call) technologies.

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PROFINET Communication Concept PROFINET uses Ethernet as a communication medium. For transporting the data, the TCP or UDP and IP protocols are implemented. PROFINET uses three channels for communication with different performance classes according to the use envisaged .NRT (Non-Real Time) for non-time-critical processes: PROFINET uses standard TCP/IP and UDP/IP to transmit data packets.RT (Real Time) for optimized data exchange performance: The read-write operation for industrial automation requires mostly high-speed data transfer, while standard TCP/IP or UDP/IP cannot satisfy this requirement.

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IRT (Isochronous Real Time) for clock-synchronized communication: Drive applications, such as Motion Control, need to be satisfied immediately. The IRT can do this with a response time of less than 1 millisecond.

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PROFINET Security Concept The core of the PROFINET Security Concept focuses on securing networks in the separated security zones, the so-called cells .Different cells may be interconnected by a backbone network.Each cell can be connected to the backbone through an entry point and is protected by using special security network components, such as switches or other security devices.

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