OPC DataHub™ : Version 6.4
	OPC DataHub Command Set

`DDEConnect`

DDEConnect — makes a connection to a DDE service and topic.

Syntax

(DDEConnect label service topic [retry_sec])

Arguments

label: A string that identifies this connection.
service: The DDE service name, as a string
topic: The DDE topic, as a string.
retry_sec: The time interval, in seconds, that the connection should be retried in case of a disconnect or network failure.

Returns

A message indicating success or error. Please refer to Return Syntax for details.

Description

This command establishes a connection to a DDE service and topic, and names the connection. The point or points that use this connection are defined by the DDEAdvise command. Both of these commands are used when you add or edit connections in the DDE option of the Properties window. For more information on DDE connections, please see Appendix G, DDE Overview.


DDEAdvise		DDEDisconnect