This function is used in Python Scripting.


Queries the given server for the item attributes that are available with system.opchda.readAttributes().

Client Permission Restrictions

This scripting function has no Client Permission restrictions.



  • Parameters

String serverName The name of the defined OPC-HDA server to query.

  • Returns

List[AttributeInfo] - A list of AttributeInfo objects. See the AttributeInfo Methods panel for a listing of available methods.

  • Scope

Gateway, Vision Client, Perspective Session

AttributeInfo Methods
methoddescriptionreturn type
getId()Returns the ID of the attribute.Integer
getName()Returns the name of the attribute.String
getDesc()Returns the description of the attribute.String
getType()Returns the data type of the attribute.Datatype
Code Examples
Code Snippet
# This example gets the description of a Matrikon OPC HDA explorer
# Declare a OPC HDA variable using the system function and prints out the results
opcHda = system.opchda.getAttributes('Matrikon HDA')
print opcHda

# Use the getDesc() method to get the description of the attribute and print out the result
getDesc = hda[1].getDesc()
print getDesc

system opchda getAttributes, opchda.getAttributes