Object PmaOpcDaClient (OPC client)

Description:

The object connects the PROMOTIC application (as OPC client) to the OPC server.

In the PmaOpcDaClient object it is possible to create the PmaOpcDaClientGroup object where required data are defined. There can be more PmaOpcDaClientGroup objects in the PmaOpcDaClient object.
This object can be created in objects: PmaRoot, PmaFolder, PmaPrototype. Multiple objects of this type can be created in such objects.
The usage of the PmaOpcDaClient object requires purchase of the "PmOPC" licence. With the freeware version PmFree, or when developing the application (with development environment for testing purposes), this component is always functional.

The PmaOpcDaClient object can be connected to the OPC server. For the OPC standard description see Communication by OPC DA interface.
The OPC server can be on the same or on another computer as the PROMOTIC application. If it is on another computer (see the "Run on computer" configurator), then it is necessary to set the DCOM network service correctly. See: Configuration of the DCOM interface for OPC-DA server.

This object inherits properties, methods and events of the PmaObject object.

Properties and methods inherited from PmaObject:

AddEvent	Registers a function into selected event
GetInfo	Returns the Info object with the specified name
GetOwnedByIndex	Returns the subobject defined by its index
GetOwnedByName	Returns reference to the subobject defined by its name
GetOwnedByType	Array of references to the subobjects
GetOwnedNum	Returns number of subobjects in the object
GetPar	Reading the value of the Pma object parameter (or its parents)
GetPathName	Object name with the path to this object
GetPermission	Returns permission of corresponding operation from object
Methods	Access to designer's methods of this object
Name	Object name (without the path)
Parent	Returns reference to the parent object in the tree of Pma objects
Pm	Returns reference to the Pma object or to its implementation subobject
RemoveEvent	Un-registers the function in the specified event
Root	Returns reference to the root application object PmaRoot

Events inherited from PmaObject:

onStart	Is triggered for each object in the runtime only once at the beginning
onStop	Is triggered for each Pma object in the runtime mode only once at the stop of the application