12 Mapping of DataTypes ToC Previous Next

12.2 Mapping to OPC DI Types ToC Previous Next

12.2.6 Methods ToC Previous Next General ToC

A DTM instance can offer command functions. These functions do not have a user interface, they can have arguments and optional default values.

Each command function shall be mapped to a method in the MethodSet of the device instance (see Figure 15). The arguments are mapped to the InputArguments and OutputArguments for the methods. Optional arguments shall be included.

readme_files/image018.png Figure 15 – Example for source of function information

OPC FDT      
Attribute Interface Method Data member Description
BrowseName IFunctions FunctionInfo FunctionItem.Label  
DisplayName IFunctions FunctionInfo FunctionItem.Label  
Description IFunctions FunctionInfo FunctionItem.Descriptor  

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