12 Mapping of DataTypes

12.2 Mapping to OPC DI Types

12.2.6 Methods

12.2.6.1 General 
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.
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 |