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Data extension configuration: ExtDdeClient

Description:
Data extension configuration ExtDdeClient - An extension for connecting to the DDE server
Configuration items:
Data extension identifierSystem text (without spaces and diacritics). It is used for unambiguous identification of data extension in data item (e.g. for Extension property).

The default value is "ddec".

DDE groupPreconfigured client groups in DDE client Group of the PmaRoot object.
DDE itemDDE item identifier. It is the third part of the DDE address (see Communication by standard interface DDE).

Macro expression can be used for input. Caution: Macro expression $vb cannot be used for input.

Initial synchronizationWhat to do after starting the application:
No - Nothing will be done
Read from server - Data will be read from server
Write to server - Initial data will write to server
Change communication
Write to serverWhat to do if PROMOTIC application writes into data:
No - Nothing will be done
On local change - Write to server only if value changed
On every writing - Always write to server
Read from serverWhat to do if the data is changed on the server:
No - The server will not send the value to the PROMOTIC application
Yes - The server will send the value to the PROMOTIC application
Periodical communication
Periodical communicationPeriodical server communication type:
No - There is no periodical communication with the server
Write to server - Value in the PROMOTIC application will be periodically written to server
Read from server - The value will be periodically read from the server
Period [s]Period in seconds (for periodical communication).
If Periodical communication=Write to server, then it is the writing period to the server.
If Periodical communication=Read from server, then it is reading period from the server.
Note:
This configuration window can be opened from the "Data extensions" configurator in the variable of the PmaData object.
 
This data extension is functional only if the global configurators PmaRoot > DDE > DDE enabled and PmaRoot > DDE > DDE client groups are set properly.

History:
Pm8.03.00: Created
PROMOTIC 9.0.6 SCADA system documentation - MICROSYS, spol. s r.o.

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