Profibus Protocol

What is Profibus?

Profibus

PROFIBUS (Process Field Bus) is an open stan­dard for field­bus com­mu­ni­ca­tions in indus­tri­al automa­tion sys­tems that was first pro­mot­ed in Ger­many in 1989.

The now most com­mon­ly found “Profibus DP” pro­vides sim­ple com­mu­ni­ca­tions between Profibus mas­ters and their remote I/O slaves. 

There are two vari­a­tions of PROFIBUS: The more com­mon PROFIBUS DP, and the less­er used, appli­ca­tion spe­cif­ic, PROFIBUS PA:

  • PROFIBUS DP (Decen­tralised Periph­er­als) is used to oper­ate field devices, actu­a­tors and sen­sors through a cen­tralised con­troller in pro­duc­tion automa­tion systems.
  • PROFIBUS PA (Process Automa­tion) is used to mon­i­tor mea­sur­ing equip­ment through a process con­trol sys­tem in process automa­tion applications.

There are five com­mu­ni­ca­tion tech­nolo­gies that can be used as phys­i­cal trans­mis­sion medi­um: RS-485, MBP (Man­ches­ter Cod­ing & Bus Pow­ered), RS-485 IS, MBP IS and fiber optics.

 

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    Communication Protocols

    IEC 60870–5 is a pro­to­col stan­dard for tele­con­trol, telepro­tec­tion, and oth­er telecom­mu­ni­ca­tion func­tions for elec­tric pow­er systems.

    IEC 60870–5‑104 (short IEC104) is a com­pan­ion stan­dard defin­ing how to extend the IEC 60870–5‑101 pro­to­col to gain net­work access using stan­dard trans­port profiles.

    DLMS/COSEM (or IEC 62056) is the main glob­al stan­dard for smart ener­gy meter­ing, con­trol and man­age­ment. It includes spec­i­fi­ca­tions for media-spe­cif­ic com­mu­ni­ca­tion pro­files, an object-ori­ent­ed data mod­el and an appli­ca­tion lay­er protocol.

    Mod­bus is a com­mu­ni­ca­tions pro­to­col based on master/slave (RTU) or client/server (TCP/IP) archi­tec­tures that can oper­ate on the 1st, 2nd, 7th lev­el of the OSI Model.

    Orig­i­nal­ly designed in 1979 by Mod­i­con for its range of PLCs, it is now a de fac­to stan­dard com­mu­ni­ca­tions pro­to­col in the indus­try, becom­ming the most wide­ly avail­able pro­to­col for the con­nec­tion of indus­tri­al elec­tron­ic devices.

    Dis­trib­uted Net­work Pro­to­col 3 (DNP3) is a set of com­mu­ni­ca­tions pro­to­cols used between com­po­nents for automa­tion sys­tems in elec­tric, indus­tri­al and water sectors.

    It is a key pro­to­col in SCADA sys­tems, where it is pri­mar­i­ly used for com­mu­ni­ca­tions between a mas­ter sta­tion and RTUs or IEDs.

    ICCP (Inter-Con­trol Cen­ter Com­mu­ni­ca­tions Pro­to­col) is a stan­dard pro­to­col for com­mu­ni­ca­tions between con­trol cen­ters, which is part of the IEC 60870–6 stan­dard under the name of TASE.2 Tele­con­trol Appli­ca­tion Ser­vice Ele­ment 2.

    It is being used around the world to exchange data over wide area net­works (WANs) between grid oper­a­tors, util­i­ties, vir­tu­al pow­er plants, region­al con­trol cen­ters and oth­er generators.

    PROFIBUS (Process Field Bus) is an open stan­dard for field­bus com­mu­ni­ca­tions in indus­tri­al automa­tion sys­tems that was first pro­mot­ed in Ger­many in 1989.

    The now most com­mon­ly found “Profibus DP” pro­vides sim­ple com­mu­ni­ca­tions between Profibus mas­ters and their remote I/O slaves. 

    Profibus & iGrid

    We have col­lect­ed, con­vert­ed and trans­ferred data using sev­er­al ver­sions of the Profibus pro­to­col in projects all over the world in many kinds of projects. All of our sys­tems are able to com­mu­ni­cate with and con­vert the pro­to­col accord­ing to spe­cif­ic project needs.

    The Slimmest Gateway

    The iGWlite comes with 1 Eth­er­net, 1 RS485/RS422 and an option­al RS-232 port (cop­per or fiber) or a 2G/3G/4G mode – tak­ing lit­tle space on a DIN-Rail, but still employ­ing the full iGrid pro­to­col stack.

    iRTU – With I/Os for Direct Data Acquisition 

    Com­pact and scal­able bay con­troller which can act as IEC 61850 client or serv­er, fea­tur­ing con­fig­urable I/O boards for direct data acqui­si­tion, high-pre­ci­sion time­stamp­ing and an option­al Eth­er­net switch for addi­tion­al Eth­er­net ports.

    iGW‑S Substation Gateway

    Pow­er­ful and reli­able sub­sta­tion gate­way, able to run either in stand­alone or redun­dant modes, with an embed­ded Eth­er­net switch (4 ports) and IEC 61850 client and serv­er capabilities.

    iGrid Solutions and Applications

    Automation with IEC 61850 

    The IEC 61850 stan­dard is enabling new opor­tu­ni­ties for ven­dor inter­op­er­abil­i­ty and advanced sub­sta­tion automa­tion. Find out how you can take advan­tage of IEC 61850 with easy-to-use and adapt­able solu­tions for a sim­ple migra­tion or retrofit.

    IEC 61850 Automation

    HV Substation Automation

    Pow­er­ful sub­sta­tion automa­tion sys­tems often han­dle numer­ous com­mu­ni­ca­tion pro­to­cols and media with­in one net­work, which can result in expen­sive and com­plex projects.  Avoid these prob­lems with inter­op­er­a­ble tech­nol­o­gy and smart con­fig­u­ra­tion tools.

    HV Sub­sta­tion Automation

    MV Distribution Grid Automation

    It is often dif­fi­cult to find the exact solu­tion you need in a MV appli­ca­tion, lead­ing to high­er costs than nec­es­sary. With our scal­able and adapt­able solu­tions you will be able to only pay for what you real­ly need, with­out com­prim­is­ing on qual­i­ty or security.

    MV Dis­tri­b­u­tion Grid Automation

    Photovoltaic Power Station

    Using an open and scal­able SCADA sys­tem to mon­i­tor and con­trol a PV plant comes with many ben­e­fits on sev­er­al lev­els. Find out how advanced com­mu­ni­ca­tion tech­nol­o­gy affects PV oper­a­tion, main­te­nance, sys­tem design, invest­ment secu­ri­ty, profits…

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