Bronkhorst FLOW-SMS Series Manual do Utilizador descarregar pdf (Página 19)

BRONKHORST HIGH-TECH B.V.

9.17.057 page 19

‐testingandselfdiagnosis

‐responsealarm(|setpoint‐measure|toohighfortoolongtime)

‐severalcontrol/setpointmodes(e.g.purge/closevalve)

‐master/slavemodesforratiocontrol(FLOW‐BUSonly)

‐identification(serialnumber,modelnumber,devicetype,usertag)

‐adjustableminimalandmaximalalarmlimits

‐(batch)counter

‐adjustableresponsetimeforcontrollerwhenopening fromzero

‐adjustableresponsetimefornormalcontrol

‐adjustableresponsetimeforstablecontrol(|setpoint‐measure|<2%)



See9.17.023“OperationInstructionsDigitalInstruments”formoredetailsabouttheparametersand

propertiesof‘multibus’instruments.



RS232FLOW‐BUScommunicationcanbeusedforoperatingyourinstrumentusingtheBronkhorstFlowDDEserver

application.

Physicallayerandcommunicationprotocolaredetectedautomaticallyuponreceptionofmessages.

Thesemessagesmustbesentusingthecorrectcombinationofphysicallayerandcommunication

protocol.Aftereverypower‐upthecommunicationdetectionmodeisactive.

DynamicDataExchange(DDE)providestheuserabasiclevelofinterprocesscommunicationbetweenWindows

applications.FlowDDEisaDDEserverapplication.Togetherwithaclient‐application, eitherself‐madeorwitha

SCADA‐programfrom3rd‐parties,itispossibletocreateaneasywayofdataexchangebetweentheflowcontroller

andaWindowsapplication.Forexample,acellinMicrosoftExcelcouldbelinkedtothemeasuredvalueoftheflow

controllerandwhenthemeasuredvaluechanges,itwillbeautomaticallyupdatedintheExcelspreadsheet.



Exam

plesofDDEclientapplications:FlowPlot,FlowView,MS‐Office,LabView,Intouch,Wizcon.



TheFlowDDEserveralsooffersalotoftestfacilitiesanduseradjustablesettingsforefficientcommunicationwiththe

connectedflow/pressuremeterorcontroller.



HowtosetupaDDElinkwithFlowDDEisdescribedinthehelp‐fileoftheFlowDDEapplication.

Programmingexamplesareavailableformakingapplicationsin:VisualBasic,LabViewandExcel.



FlowDDEparameternumbers:

Reading/changingparametervaluesviaFlowDDEofferstheuseradifferentinterfacetotheinstrument.

Besidestheapplicationname:‘FlowDDE’thereisonlyneedof:

 topic,usedforchannelnumber: ‘C(X)’

 item,usedforparameternumber:‘P(Y)’

ADDE‐parameternumberisauniquenumberinaspecialFlowDDE instruments/parameterdatabaseandnotthe

sameastheparameternumberfromtheprocessonaninstrument.

Node‐addressandprocessnumberwillbetranslatedbyFlowDDEtoachannelnumber.

FlowDDEandotherBronkhorstapplicationsareavailableattheBronkhorstdownloadsite:

http://www.bronkhorst.com/en/downloads



AspecialRS232cable(7.03.366)canbeorderedseparately.ItconsistsofaT‐partwith1maleand1

femalesub‐D9connectorononeinstrument‐sideandanormalfemalesub ‐D9connectoronthesideof

thecomputer.BymeansofthiscableitispossibletoofferRS232communicationandstillbeableto

connectpower‐supplyandanaloginterfacethroughthe(analog)sub‐D9connector.

RS232communicationisonlypossiblewithabaudrateof38.4KBaudandcanbeusedforeither:

 Uploadingnewfirmwarebymeansofaspecialprogram(fortrainedBHT‐servicepersonnelonly)

 ServicingyourinstrumentusingBHT‐serviceprograms(fortrainedBHT‐servicepersonnelonly)

 Operating your instrument using FlowDDE, FLOWB32.DLL or RS232-ASCII protocol (end

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