'Declaration
<ExtensionAttribute()> Public Overloads Shared Function ReadItemValueInt16( _ ByVal client As IEasyDAClient, _ ByVal machineName As String, _ ByVal serverClass As String, _ ByVal itemId As String _ ) As Short
'Usage
Dim client As IEasyDAClient Dim machineName As String Dim serverClass As String Dim itemId As String Dim value As Short value = IEasyDAClientExtension2.ReadItemValueInt16(client, machineName, serverClass, itemId)
[Extension()] public static short ReadItemValueInt16( IEasyDAClient client, string machineName, string serverClass, string itemId )
[Extension()] public: static short ReadItemValueInt16( IEasyDAClient^ client, String^ machineName, String^ serverClass, String^ itemId )
Parameters
- client
- The client object that will perform the operation.
This is typically the OpcLabs.EasyOpc.DataAccess.EasyDAClient object.
The value of this parameter cannot be
null
(Nothing
in Visual Basic). - machineName
- Name of the machine. Determines the computer on which the OPC server is located. It may be an empty string, in which case the OPC server is assumed to exist on the local computer or at the computer specified for it by DCOM configuration.
The value represents a UNC or DNS computer name. Any string can be passed to this parameter (i.e. will not cause System.ArgumentException), but not all values make sense and will work when an operation using them is attempted. IPv6 addresses are normally enclosed between '[' and ']'.
The value of this parameter cannot be
null
(Nothing
in Visual Basic). - serverClass
- Contains ProgID of the OPC server to read from.
The value of this parameter cannot be
null
(Nothing
in Visual Basic). - itemId
- Contains OPC item identifier.
The value of this parameter cannot be
null
(Nothing
in Visual Basic).