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What's SCADA

 

 

Whati's SCADA?

          SCADA Ҩҡ Supervisory Control And Data Acquisition кǨͺẺ Real-time 㹡õǨͺʶҹеʹ֧Ǻ÷ӧҹͧкǺصˡЧҹǡҧ ҹҹäҤ ûл úӺѴ èѴôҹѧҹ صˡá蹹ѹСҫ صˡ صˡСͺö¹ â кǹùç俿繵  ҧҹ SCADAǨͺ蹡ŢͧͧǷԴ㹷͢觨ҡǵǨѺѭҳ͹龹ѡҹҺ 觢ǹҧͧк SCADA 繵 ͡ҡ SCADA Ҩ˹ҷӹǹлżŢŷҡҧ PLC, Controller, DCS, RTU ʴŷҧ˹Ҩ ѭҳǺѧ ҡسԢͧػó٧ԹԡѴ ӡûԴػó繵 觧ҹҹ PLC Controller Դ 駹 SCADA öǺŷҡкǺ㹰ҹ龹ѡҹ öҹ SCADA ǹ㹧ҹǺ˭ͧʴ š¹ ͤǺкҧ ҡǹҧ ͡÷ӧҹͧкѹѹ ͧҾҧѴਹդǴǵ˵ءóҧ Դ к SCADA 㹻Ѩغѹդö㹡 Ǻ лżŢŨҡ I/O ͧػó PLC, DCS, RTU ֧дѺԹ˹ʹ I/O ѺþѲդöͧѺͧ ͧҹҧͧʹ SCADA СͺǹСͺѡ ˹µԴлԺѵԡâͧдѺ ˹¤Ǻ ˹µԴ

 

  Сͺͧк SCADA    

         öǨͺФǺкǹüԵçҹصˡзҧ ˹µԴлԺѵԡâͧдѺͧͻԺѵԡâͧѺǨͺФǺ кǹüԵ͡Ѻ˹¤Ǻ ˹¤ǺŵԴ͡Ѻ˹µԴ¡âẺԨԵŷҧк͢¤Ҥ ˹µԴͧ͡ѺкǹüԵ Сͺ ˹Ѻѭҳ ѭҳͧѭҳԴ͹͡ ѭҳԴԨԵ

 

 

ٻõԴ SCADA ѺǨͺ Ǻ ккǺ

     SCADA Ѻҹ 
          ʡҴѺõǨͺ ǺŢͧкǹüԵ СúкǺͧçҹصˡҴ˭dzкǹüԵͺ鹷ҧ çҹصˡաкǹüԵеԴ駡ШѴШ·Ǻdz鹷üԵ ֧кҸóػҧ   к俿йӻл к觡ҫйѹ ʡҴѺäǺкǹêԴѭҳͧСäǺкǹẺԴдѺͧкǹüԵ ͧҡʡҴöӹdzлżŢ˹»ż˹µԴлԺѵԡâͧдѺ˹ҷ ѺäǺкǹüԵµçѺѭҳѴѭҳǺҧʡҴҡѺкǹüԵͧҹ ͧк͢·äǺкǹüԵͧʡҴջԷҾǡѺкǺẺ  

 

     çҧҹ (Hardware Architecture)
          SCADA 觵çҧͧдѺ Client Data Server ¡ Server · Client ͤѺ觢ѧ Data Server ½ Client ʴš÷ӧҹͧкǺ ʴ繡ҿԡ ҿẺͧ к͹Դ˵ءóءԹ͵ͧ͹ 繵 Client ö觧ҹǺѧ Data Server ѭҳѧ PLC, DCS Controller աʹ˹ ǹ Data Server з˹ҷԴ͡Ѻ PLC, DCS, Controller RTU ҧ Ѻѭҳѭҳѧ Client Ѻͧͨҡ Client ͤǺػó PLC Controller ҧ   Client Data Server ǹ˭Դ͡ѹҹк͢ Ethernet

 

 

 

ٻçҧẺͧк SCADA

çҧҹ (Software Architecture)

          çҧҹͧк SCADA բͷͧҺ SCADA ෤㹡áѺ ( PLC, DCS) ҧ ѹ仵Ե 蹡 Driver ੾ТͧԵ SCADA áѺ PLC, DCS 繵 㹻Ѩغѹաá˹ҵðҹҧ OPC صԻѭҡ෤੾дҹ㹡 ͡ҡѧդö㹡úԡâѺ Client ǴʶҾ

 

 

 

ٻçҧҹͧ SCADA

          оǹͧ SCADA Server õԴ͡Ѻ PLC Controller 駼ҹ Driver OPC · OPC Driver öѺẺ Read / Write ҹŨҡ PLC ¹觧ҹѧ PLC  SCADA Server з˹ҷѴâ RTDB (Real Time Data Base) ҡ PLC Ѻ SCADA Client · SCADA Server ҧеԴ͡Ѻ SCADA Client ҹ DDE Server 觷öҢŨҡ PLC MS Excel Client Դ͡Ѻ DDE Server
          SCADA ҧǨ͡Ẻ SCADA Server ˹ҷǨѺ Alarm Alarm DB 红ŷ Historian Log DB 繵 Alarm Display Log Display ҧ SCADA Client Ѻǹ Development Environment 鹨ТѺ͡Ẻͧ SCADA ·仡ͧ㹡ҧШѴáҿԡ (Graphic Editor) ͧ㹡èѴ礷ҧ (Project Editor) ͧ㹡ù͡ Text file 纤Ҥ͹ԡê蹢ͧõԴ͡Ѻ Driver OPC Server
 

çҧҹ (Communications)
         ҧ Client-Server üҹⵤ· TCP/IP Client еԴ͡Ѻ Tag Server ԡâŴٻẺᵡҧѹ仵Ե ա觤Ҩҡ Server ͤҢͧ I/O ͧ PLC ա¹ŧ 繵 áѺػó Server зӡõǨͺҨҡػóǧҷҹ˹ (Defined polling rate) Ҩеҧѹ仵ҧ µ Controller 觤Ҿ١ͧѺ Data Server Ңй (Time Stamp) áѺػóͧ Data Server Ҩ繡Ẻ Modbus, Profibus, CAN bus 繵 Ѻҵðҹâͧػó Ẻ 㹻Ѩغѹաҧ OPC Server ʹѺʹعõԴʹҵðҹҧҡ¨ͺػóء աþѲǶ֧ѧػó ҧͧ

 çҧԹ (Interface)
          õԴҧ Data Server Ѻػóҧ Data Server Data Server СѺ Client աüԵ Driver ͡ҡµ෤Ԥ੾ТͧмԵ Ҩ֧աá˹ҵðҹͧԹʢ OPC (OLE for Process Control) դǴ㹡кԡâաèѴ OPC Foundation ͧóѡ㹡á˹ҵðҹж·ʹ෤Ҫԡ OPC ֧ҵðҹҧԴҧҡش
         õԴ͡Ѻҹ¹ͧ͡ SCADA Software աҧöԴҹ ODBC (Open Data Base Connectivity), OLEDB (Linking and Embedding Data Base), DDE (Dynamic Data Exchange) 繵 öš¹ͷӡ红㹰ҹٻẺҧ 㹻ѨغѹաþѲöԴ͡Ѻ ERP ҧ SAP 繵


 çҧö㹡âк (Scalability)
          Scalability ͤö㹡ͧѺе͢к SCADA Ѻǹҧ I/O ͧػó Controller Шӹͧ SCADA Client ͡õ;ǧѺк SCADA ͧ 繵 ҡ Data Server Ẻ Driver ҧ෤੾㹡õԴ͡Ѻػó ͧӺҡ㹡õ͢ Driver ҧöԴ੾ SCADA Software ҧҹ ѭҹ繷ԾҡԨóѹҧҧҧ 觻Ѩغѹѹҵðҹҧ OPC 䢻ѭҹ

çҧͧк (Redundancy) 
          SCADA Software ǹ˭դö㹡÷ͧкͧ Data Server · Data Server ԴѴͧ觧ҹ Data Server ա˹觷ӧҹ᷹ ¨աá˹͹ԡê Client Ҩ͡Դ͡Ѻ Data Server ˹ԴѴͧԴ
         
㹺ҧŷ˹ҷѴôҹ Redundancy Ҩз˹ҷաС˹觤繨شѡŷѺҨҡ Data Server ͹Ѻ Client ҧ 㹡óշ Client ӹǹҡԴѺ Data Server ǹҨդҪ㹡úԡâŢͧ Data Server еͧԡâ Client úӹǹ͹Ѻҡػó ѧŷ˹ҷ Redundant ֧˹ҷ繨شѺǪ觵 Client ҧ  աʹ˹ Data Server ˹ҷԡâ˹§ش ֧դǴ㹡úԡâ

˹ҷ÷ӧҹ (Functionality)

 Ҷ֧ͧػó 
          ¶֧ö㹡Ҷ֧ͧػó I/O ͧ PLC 繵 öͧ Data Server 㹡á˹Ҿ ҹҧ ¹ҧ ͷҹ¹ 繵

  кʴẺ MMI (Man Machine Interface)
         ͤö㹡ʴš÷ӧҹͧػóٻẺ ҿԡ ͤ ѭѡɳ ἹҾ 繵 ö§ѡɳС¹ŧͧҿԡҹѺҡ Data Server ö㹡觧ҹҹкҿԡ ûԴ/Դ Է캹͹觼ѧ I/O ͧ PLC 繵
         
ö㹡èѴáҿԡ á˹͹Ẻҧ ع ͹Ẻԡ᫡ѭҳͧ Data Server ʴѭҳٻẺࡨѴẺҧ ùҡҿԡҧ èѴ 繵 ҹ繢ººöͧ SCADA Software

 кʴҿѭҳẺͧ (Trending)
          Trending 繤ö㹡þ͵ҿͧѹ仺Ҿʴѭҳҡ Data Server Ҩö͵ѭҳѭҳ 8 – 24 ѭҳ ѹ˹ҵҧ öººѭҳ͵ ӡѴҨҧ˹ҵҧ͵ӹǹ
          Trending Ҩդö㹡 ѭҳ͵ شþ͵͹٤ҷ͵ЪǧµǢͧҹͧ ͡ҡ鹡þ͵Ҩö͡Ҩ繡þ͵Ẻ Time plot, Logarithmic plot, Strip Chart, Bar Chart, Circular, X-Y plot 繵 ͡ҡ鹺ҧԵѧöӤ Historian ͢ѭҳ㹰ҹ͡Ҿ͵ ա  Trending Module ҨẺ ActiveX Control öҹͻप蹷ʹѺʹعù ActiveX

  к͹ (Alarm)
          SCADA Software ǹ˭к͹ Alarm Display ѺѭҳҨҡ Alarm DB 㹽 SCADA Server Alarm DB öзӡá˹͹ԡêҨйѭҳ繵Ǿ㹡͹ҧ աдѺͧ Priority, Limit ҧ 繵 к͹ѧö红š͹㹰ҹŻҧ MS SQL Server, MS Access, Oracle, MS Excel 繵 кҧöʴ͡§ҹٻẺҧ Ἱա

 ÷ӧҹẺ Automation
          繤ö SCADA ˹ҷҧ ˹ ʴͤẺ Instance Message˹Ҩ Դѧ˹Ҩ 红ŧҹ Դ ѹʤԻ 繵 ѭҳѺҡ Data Server Т͡˹ҧ

 

 

 

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