LabVIEW OPC with NI OPC Servers - halvorsen.blog · NI OPC Servers A Demo version should be included with LabVIEW DSC Module or LabVIEW Real-Time Module Use Search in Windows. Search

LabVIEWOPCwithNIOPCServers

Hans-PetterHalvorsen,M.Sc.

Software

YouneedthefollowingSoftware:• LabVIEW(LabVIEWProfessionalDevelopmentSystem32-Bit:English)

• NIOPCServers

AllLabVIEWSoftwarecanbedownloadedfrom:www.ni.com/download

Youmayusethemin“EvaluationMode”ifyoudon'thaveavalidLicensekey

WriteDatatoOPCServerReadDatafromOPCServer

LabVIEWApplication#1 LabVIEWApplication#2

InthisExampleLabVIEWApplication #1andLabVIEWApplication#2areonthesamecomputer.Normallytheyarelocatedon2differentcomputersinaNetwork.

NIOPCServers

NIOPCServers

Hans-PetterHalvorsen,M.Sc.

NIOPCServersADemoversionshouldbeincludedwithLabVIEWDSCModuleorLabVIEWReal-TimeModule

UseSearchinWindows.Searchfor«OPCServers»Andselect«OPCServersConfiguration»

NIOPCServers

NIOPCServerswillthenstartandyougetaccessfromtheTaskbarinWindows.

Select“Configuration”

NIOPCServersConfiguration

HereyoumaycreateNewOPCTags.JustRight-clickandselect«NewTag»

NIOPCServers– CreateNewTag

HereIhavecreateaNewOPCTagcalled«Temperature»

OPCinLabVIEW

Hans-PetterHalvorsen,M.Sc.

TheOPCFunctionsinLabVIEW

TheDataSocketpaletteinLabVIEW: WriteDatatoOPC

ReadDatafromOPC

OpenConnectiontoOPCServer CloseConnection

toOPCServer

BrowseOPCServersandOPCItems

YoucanuseLabVIEWasanOPCclientbyconnecting toanOPCserverthrough aDataSocket connection.

OPCWriteinLabVIEW

Hans-PetterHalvorsen,M.Sc.

WriteDatatoOPCServerReadDatafromOPCServer

LabVIEWApplication#1 LabVIEWApplication#2

InthisExampleLabVIEWApplication #1andLabVIEWApplication#2areonthesamecomputer.Normallytheyarelocatedon2differentcomputersinaNetwork.

NIOPCServers

Write toOPCServerusingLabVIEW

OrspecifyURLdirectly:

1 2 3 4

WhileLoop

WhileLoop

UsetheBucketBrigade Items– becausetheycanbeusedforbothreadingandwriting

ConnecttoNIOPCServersWriteTagURLmanuallyorselectTagusing the«DataSocketSelctURL»

OPCReadinLabVIEW

Hans-PetterHalvorsen,M.Sc.

WriteDatatoOPCServerReadDatafromOPCServer

LabVIEWApplication#1 LabVIEWApplication#2

InthisExampleLabVIEWApplication #1andLabVIEWApplication#2areonthesamecomputer.Normallytheyarelocatedon2differentcomputersinaNetwork.

NIOPCServers

Read fromOPCServerusingLabVIEW

1 2 3 4

WhileLoop

WhileLoopOrspecifyURLdirectly:

ConnecttoNIOPCServersWriteTagURLmanuallyorselectTagusing the«DataSocketSelctURL»

FinalSolution

Hans-PetterHalvorsen,M.Sc.

WriteDatatoOPCServerReadDatafromOPCServer

LabVIEWApplication#1 LabVIEWApplication#2

InthisExampleLabVIEWApplication #1andLabVIEWApplication#2areonthesamecomputer.Normallytheyarelocatedon2differentcomputersinaNetwork.

NIOPCServers

RunningWriteClientandReadClientsimultaneously

ItWorks!

Hans-PetterHalvorsen,M.Sc.

UniversityCollegeofSoutheastNorwaywww.usn.no

E-mail:[email protected]:http://home.hit.no/~hansha/