OPC Client Components for .NET
easiest way to access OPC servers
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    OPC Client Components
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      - Pro Package
    Classic OPC DA     Connector
    OPC UA Connectorsales and new
   

Products > Classic OPC DA Connector

Classic OPC DA Connector
opc classic da connector
  • End of OPC coding nightmare.
  • Easiest way to access to Classic OPC DA Servers by code.
  • For Microsoft .NET development environments, Visual Basic, C#, etc.
  • Simplest Read, Write, Monitor, Connect methods.
  • Monitor method informs you when monitored items value changed.
  • Connect method is unique. Creates as link from OPC Item to any .NET control.
    So Value of OPC Item is automatically written to a property of .NET control.
  • Large interface for testing.
  • Asynchronous Read-Write supported.
  • Royalty free runtime distribution, pay only once.
Operating Systems:
  • Windows XP
  • Windows 7 (32-bit , 64-bit)
  • Windows 8 (32-bit , 64-bit)

Development Environments:
  • MS Visual Studio 2008 (VB.NET , C#)
  • MS Visual Studio 2010 (VB.NET , C#)
  • MS Visual Studio 2012 (VB.NET , C#)
  • MS Visual Studio 2013 (VB.NET , C#)

.NET Frameworks:
  • 3.5
  • 4.0
  • 4.5
  • 4.5.1

OPC DA Servers
  • Classic OPC DA Servers, Version 2.0x and 3.0

Classic OPC DA Connector
  Classic OPC DA Connector License for 1 Developer PC
    Royalty free runtime distribution
   
$695
All properties, methods, events are explained with sample codes in help file.
gAsyncProcessCount
Count of asynchronous reading or writing operations in progress.
gClientName
Specifies name of OPC client developed with classic connector. This name is shown on OPC server.
gAutoConnect
When set to true, Classic OPC DA connector connects to specified OPC server automatically in runtime.
gConnected
Indicates connection state.
gLargeView
Classic OPC DA connector has two different views: Large or small. This property enables large view. In large view, it shows some detailed information.
gServerName
Name of Classic OPC DA server that Classic OPC DA connector will connect to.
gShowMessages
Specifies whether error messages will be shown or not, if any OPC error occurs.
Genaral Methods
gConnect
Connects Classic OPC DA connector to specified OPC server.
gDisconnect
Disconnects Classic OPC DA connector.

Read - Write Methods
gReadOneItem
Reads value of a single OPC item from PLC synchronously.
gReadItems
Reads values of multi OPC items from PLC synchronously.
gWriteOneItem
Writes a new value to a single PLC address synchronously.
gWriteItems
Writes new values to multi PLC addresses synchronously.
gAsyncReadOneItem
Reads value of a single OPC item from PLC asynchronously.
gAsyncReadItems
Reads values of multi OPC items from PLC asynchronously.
gAsyncWriteOneItem
Writes a new value to a single PLC address asynchronously.
gAsyncWriteItems
Writes new values to multi PLC addresses asynchronously.
gCancelAsyncReadWrite
Cancels an asynchronous writing or reading process.

Subscription Methods
gConnectItemsAndObjects
Creates links between PLC addresses and objects ( Label, Textbox ). Value of PLC address are automatically written to predefined property of connected objects.
gConnectOneItemAndObject
Connection method for a single PLC address to a single object (Label, Textbox).
gKillConnnectionGroup
Deletes connection group specified by group name.
gRemoveItemsAndObjectsFromConnectionGroup
gRemoveOneItemAndObjectFromConnectionGroup
gMonitorItems
Monitoring methods defines subscriptions, when values of monitored items change, gMonitoredItemsValueChanged event gives new values.
gMonitorOneItem
Monitoring method for a single PLC address ( OPC item ).
gKillMonitoringGroup
Deletes monitoring group specified by group name.
gRemoveItemsFromMonitorGroup
gRemoveOneItemFromMonitorGroup
gPauseGroup
Makes a group Inactive, so this connection or monitoring group does not refresh values anymore.
gResumeGroup
Makes an Inactive group Active again.
gGetActiveState
Gives infromation about if a subscription group ( connection or monitoring group ) is Active or Inactive.
gGetSubscriptions
Gives information about a subcription group ( connection or monitoring group ).
gAsyncCancelCompleted
gAsyncReadItemsCompleted
gAsyncReadOneItemCompleted
gAsyncWriteItemsCompleted
gAsyncWriteOneItemCompleted
gMonitoredItemsValueChanged
Compatible OPC Servers: Classic OPC DA 2.0x , 3.0 Servers








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