OPCQueryPoint — provides data about an OPC point.
(OPCQueryPoint label pointname)
label
A name used by the DataHub instance to identify the connection, as listed in the Connection column of the OPC DA option of the Properties window.
pointname
The name of a DataHub point only (no domain name) within the domain that has been configured for the OPC connection.
A message indicating success or error. Please refer to Return Syntax for details.
This command provides data about a point within a configured OPC connection. Details regarding the nature of the data have not been documented.
This is an example of the command being called from the Script Log, using the
datahub_command function. A few carriage returns have
been added to this example to make the output easier to read.
--> pretty_princ(datahub_command
("(OPCQueryPoint OPC004 Channel_0.Ramp.Ramp1)", 1));
(OPCQueryPoint OPC004 ("OPC004" "Channel_0.Ramp.Ramp1" 18 0
"Channel_0.Ramp.Ramp1" ("Channel_0" "Ramp" "Ramp1")))
t