Object PmaOpcDaClient (OPC client)

Description:

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

In the PmaOpcDaClient object can be created 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. When developing the application in the freeware mode PmFree, or with development environment and while testing it in runtime, 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 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.

If the OPC server is 32-bit, then also the PROMOTIC application must be running in 32-bit version (and the same goes for 64-bit). See PmManager > "Applications" tab.

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

Properties and methods inherited from the PmaObject object:

AddEvent()	Registers a function into the specified event
GetOwnedByIndex()	Returns the subobject defined by its index
GetOwnedByName()	Returns reference to the subobject defined by its name
GetOwnedByType()	Returns an array of references to the subobjects
GetOwnedNum()	Returns the 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 the object
Methods	Access to designer methods of this object
Name	Object name (without the path)
Parent	Returns reference to the parent Pma object
Pm()	Returns reference to the Pma object or to its implementation subobject
RemoveEvent()	Unregisters the function in the specified event
Root	Returns reference to the root application object PmaRoot

Events inherited from the PmaObject object:

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