Examples of using Pmopcclientdata in English and their translations into Czech
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Colloquial
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Official
The system creates PmOpcClientData object automatically.
Pm("opcdata/ vars/aaa") method returns the aaa variable from the object named opcdata that is of the PmOpcClientData type.
There can be more PmOpcClientData objects in the PmOpcClient object.
The variables in the PmData object can use ExtOpcClient andregister themselves directly into the PmOpcClientData.
Then, on the page PmOpcClientData> Data, it is not necessary to define any variables.
Var variable can be created in objects:PmData, PmOpcClientData, PmCommData, PmTrend, PmCommMsg.
See: Object PmOpcClientData The standard OPC server(providing data) receives the data from a data source e.g.
It is necessary to insert required number of PmOpcClientData objects into the PmOpcClient object.
In objects PmOpcClientData and PmCommData, the quality is filled in automatically when receiving the value from the communication.
In the PmOpcClient object it is possible to create the PmOpcClientData object where required data are defined.
For similar reasons it is often desirable- if you want to read the items andto write into them at the same time- rather to create two OPC groups two PmOpcClientData objects.
The access to the data items in the PmOpcClientData object is the same as in the PmData object, i.e.
The window can be opened by the"Import" button on the" Data" page of the data objects PmData, PmOpcClientData, PmTrend, PmCommData, PmCommMsg.
The variables can be defined directly in the PmOpcClientData object, but better solution is to define the variables by using the data extensions.
Open the INFO system window,switch to the"PmRoot" item and there switch into the PmOpcClientData object that you have created.
For the data configuration in the PmOpcClientData object, it is more comfortable to add multiple variables by direct selection from the OPC server.
Returns an array of all data extensions( ExtOpcClient objects)registered into PmOpcClientData object all items of this group.
Tha data group of the OPC client( PmOpcClientData object) that has this property set to true, requires the ongoing update of all its data from the OPC server.
The object can also be selected by the button on the right. By this selection the OPC server, refresh rate andother parameters defined in PmOpcClientData object can be defined.
OPC variables are not necessarily specified in PmOpcClientData object and the PmNumber object for DDE does not have to be used.
The data extensions are created(configuration and source part)in the Var item(variable) of the PmData( PmCommData, PmOpcClientData, PmTrend) object.
For example PmTrend for ExtTrend,PmCommData for ExtComm, PmOpcClientData for ExtOpcClient or PmAlarmEvent for ExtAlarmAnalog and ExtAlarmBinary.
Then each item of this array represents the"data extension ExtOpcClient object" of the variable that is defined either in this PmOpcClientData object or in another PmData object.
The data group of the OPC client( PmOpcClientData object) that has this property set to false, informs the OPC server about not using these data at the moment.
This property accesses one variable as theVar object from which the standard data can be found but the Var object has two more properties specific only for the OPC in the PmOpcClientData object.
For the optimization of the data transfer rate each data client(in this case the PmOpcClientData object) informs the OPC server how it wants to share the specified data.
Variables that are counted into the total application size are in objects PmData, PmOpcClientData, PmTrend, PmCommData, PmCommMsg, in obsolete objects PmNumber and PmString and in ExtSubVar data extension.