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This article mainly talks about "what are the ScaleOPC.DLL functions of c #". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what are the ScaleOPC.DLL functions of c #"?

I. the function and internal structure of "ScaleOPC.dll":

(1). Refer to all the functions within the WtOPCSvr.dll component, and the WtOPCSvr.dll component is written in VC

So use C # [DllImport ("WtOPCSvr.dll")], for programmers

Everyone knows that. The corresponding BaseOPCServer.cs class.

(2). Inherit the BaseOPCServer.cs class and write the OPC SERVER usage class. Of course, just use it.

BaseOPCServer.cs can also be used, but to facilitate the management of TAG, TagInfo.cs and

TagCollection.cs class, users manage TAG information and collections.

(3). The function of database driver has been added. You can use this DLL to configure data sources and configure fields at will.

System. Both ACCESS and SQL database types are supported.

(4). For ease of use, when starting the service, it will check whether the OPC is registered. If not, this

DLL automatically releases embedded resources for registration.

(5). All you need is a "ScaleOPC.dll", and other embedded resources will be automatically released. Be a user

It's not about sex.

Second, the specific application, only a few functions.

It is still very convenient to use. Don't worry about the mechanism in it, it's all sealed up.

/ / external interface class when the user uses it

ScaleOPC.OPCInterface inter=new ScaleOPC.OPCInterface ()

/ / configure data sources

Inter.ConfigOPCSvr ()

/ / start threading service, establish OPC TAG, and update data in real time

Inter.StartOPCSvr (System.AppDomain .CurrentDomain .BaseDirectory + "Test.exe")

/ / pause the current service

Inter.Suspend ()

/ / restart the service

Inter.Resume ()

/ / stop the current service

Inter.CloseOPCSvr ()

/ / View the current TAG structure

ScaleOPC.TagStructForm form=new ScaleOPC.TagStructForm (inter)

Form.ShowDialog ()

Configure the database type

Select ACCESS data source

Select SQL data source

Configure data source fields

View TAG structure

Client testing tools.

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