GodSharp.Opc.Da

Package Version

Name	NuGet	MyGet
GodSharp.Opc.Da
GodSharp.Opc.Da.OpcAutomation
GodSharp.Opc.Da.OpcAutomation.Kepware
GodSharp.Opc.Da.OpcAutomation.Graybox
GodSharp.Opc.Da.OpcNetApi

Introduction

OpcDaClient has two implementations, which one to choose depends on your own preferences.

• OpcAutomation : GodSharp.Opc.Da.OpcAutomation
• OpcNetApi : GodSharp.Opc.Da.OpcNetApi

OpcAutomation

• OpcAutomation

  you should register OPCDAAuto.dll, you can download from others or /assets/da folder.

• Graybox

  you should register gbda_aut.dll, you can download from http://www.gray-box.net/download_daawrapper.php?lang=en.

• Kepware

  you should install Kepware.

OpcNetApi

you should install OPC Core Components, you can download from others or /assets/da folder.

Getting Started

This tutorial uses GodSharp.Opc.Da.OpcAutomation library, you should install this package first.

  PM> Install-Package GodSharp.OpcDa.OpcAutomation

Initial : Create opc client

If you want to use data change event, you should set IsSubscribed value to true,default is false.

Sample Code :

  // initial with data info
  // The group `Name`, `ClientHandle` is unique and required, `UpdateRate` is required too.
  // The tag `ItemName`, `ClientHandle` is unique and required.
  var groups = new List<GroupData>
  {
      new GroupData
      {
          Name = "default", UpdateRate = 100, ClientHandle = 010, IsSubscribed = true,
          Tags = new List<Tag>
          {
              new Tag("Test.Simulator.Booleans.B0001", 011),
              new Tag("Test.Simulator.Numbers.N0001", 012),
              new Tag("Test.Simulator.Characters.C0001", 013)
          }
      },
      new GroupData
      {
          Name = "group1", UpdateRate = 100, ClientHandle = 100,IsSubscribed = true,
          Tags = new List<Tag>
          {
              new Tag("Test.Simulator.Booleans.B0002", 101),
              new Tag("Test.Simulator.Numbers.N0002", 102),
              new Tag("Test.Simulator.Characters.C0002", 103)
          }
      },
      new GroupData
      {
          Name = "group2", UpdateRate = 100, ClientHandle = 200,IsSubscribed = false,
          Tags = new List<Tag>
          {
              new Tag("Test.Simulator.Booleans.B0003", 201),
              new Tag("Test.Simulator.Numbers.N0003", 202),
              new Tag("Test.Simulator.Characters.C0003", 203)
          }
      }
  };

  var server = new ServerData
  {
      Host = "127.0.0.1",
      ProgId = "Kepware.KEPServerEX.V6",
      // initial with data info,after connect will be add to client
      // if this is null,you should add group and tag manually
      Groups = groups
  };
  
  var client = DaClientFactory.Instance.CreateOpcAutomationClient(new DaClientOptions(
          server, 
          OnDataChangedHandler, 
          OnShoutdownHandler,
          OnAsyncReadCompletedHandler, 
          OnAsyncWriteCompletedHandler));

• The group Name, ClientHandle is unique and required, UpdateRate is required too.
• The tag ItemName, ClientHandle is unique and required.

Connect to Opc Server

  var connected = client.Connect();

Add Group to Client

If you want to use data change event, you should set IsSubscribed value to true,default is false.

  client.Add(new Group() {Name = "default", UpdateRate = 100, ClientHandle = 010});
  client.Add(new Group() {Name = "group1", UpdateRate = 100, ClientHandle = 100,IsSubscribed = true});
  client.Add(new Group() {Name = "group2", UpdateRate = 100, ClientHandle = 200,IsSubscribed = false});

Important! The group Name, ClientHandle is unique and required, UpdateRate is required too.

Add Tag to Group

  // add one by one
  client.Groups["group1"].Add(new Tag("Channel1.Device1.Group1.Tag1", 100));
    client.Groups["group1"].Add(new Tag("Channel1.Device1.Group1.Tag2", 101));
    
  // add multi one time
  client.Groups["group1"].Add(
      new Tag("Channel1.Device1.Group1.Code", 100),
      new Tag("Channel1.Device1.Group1.Number", 101));

Important! The tag ItemName, ClientHandle is unique and required.

Event Handles

If you want to use data change event, you should set IsSubscribed value to true,default is false.

  public static void OnDataChangedHandler(DataChangedOutput output)
  {
      Console.WriteLine($"{output.Data.ItemName}:{output.Data.Value},{output.Data.Quality} / {output.Data.Timestamp}");
  }
  
  public static void OnAsyncReadCompletedHandler(AsyncReadCompletedOutput output)
  {
      Console.WriteLine(
          $"Async Read {output.Data.Result.ItemName}:{output.Data.Result.Value},{output.Data.Result.Quality} / {output.Data.Result.Timestamp} / {output.Data.Code}");
  }
  
  public static void OnAsyncWriteCompletedHandler(AsyncWriteCompletedOutput output)
  {
      Console.WriteLine($"Async Write {output.Data.Result.ItemName}:{output.Data.Code}");
  }
  
  public static void OnShoutdownHandler(Server server, string reason)
  {
  }

Group Refresh

Refresh tags in group when you want get all tags latest values by group OnDataChangedHandler event handler.

  client.Groups["group1"].RefreshAsync();
  // or
  client["group1"].RefreshAsync();

Read/Write Tag

See sample code.

Disconnect to Opc Server

  client.Disconnect();

License

Free!