OPCAddItem2
OPCAddItem2 — adds OPC items to a connection.
Synopsis
(OPCAddItem2 label flags propid item (parent...))
Arguments
-
label The name for this connection, as displayed in the OPC option of the Properties window.
-
flags one or more of the following:
IS_BRANCH= 0X0001IS_LEAF= 0X0002IS_PROP= 0X0004PARENT_IS_LEAF= 0X0008IS_EXPLICIT= 0X0010![[Note]](images/note_1156523861.png)
The
IS_EXPLICITflag will be added automatically, if it is not present, when a DataHub instance writes the configuration file.-
propid If this point is a property of an OPC leaf item (
IS_PROPis true), then the property ID must be entered here. Otherwise, enter0. This entry is ignored ifIS_PROPis not true.-
item The name of the item on the OPC server, as a string.
- (
parent...) A list of parent DataHub points (OPC branch nodes) that lead to this point, each as a string. If the point is a property (has a non-zero
propid), then the last element of the list should be an OPC leaf node. OPC servers can use the "." character in item names, so this hierarchy is not necessarily derivable from the point name.-
Returns
A message indicating success or error. Please refer to Return Syntax for details.
Description
This command adds OPC items to an OPC server connection. It does not take effect until the OPCApply command is issued.
Example
(OPCAddItem2 "MyOPCServer" 2 0 "Tank3.Level" ("Tank3" "Level"))