'Declaration
<ExtensionAttribute()> Public Overloads Shared Function ReadItemValueChar( _ ByVal client As IEasyDAClient, _ ByVal machineName As String, _ ByVal serverClass As String, _ ByVal itemId As String, _ ByVal valueAge As Integer _ ) As Char
'Usage
Dim client As IEasyDAClient Dim machineName As String Dim serverClass As String Dim itemId As String Dim valueAge As Integer Dim value As Char value = IEasyDAClientExtension2.ReadItemValueChar(client, machineName, serverClass, itemId, valueAge)
[Extension()] public static char ReadItemValueChar( IEasyDAClient client, string machineName, string serverClass, string itemId, int valueAge )
[Extension()] public: static char ReadItemValueChar( IEasyDAClient^ client, String^ machineName, String^ serverClass, String^ itemId, int valueAge )
Parameters
- client
- The client object that will perform the operation.
- machineName
- Name of the machine. Determines the computer on which the OPC server is located. 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.
- serverClass
- Contains ProgID of the OPC server to read from.
- itemId
- Contains OPC item identifier.
- valueAge
- Determines the age of value you would like to obtain (in milliseconds).
Return Value
Returns a value of the OPC item, converted to a type indicated by the method name.