system.opchda.getAttributes
This function is used in Python Scripting.
Description​
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.
Syntax​
system.opchda.getAttributes(serverName)
Parameters​
| Type | Parameter | Description |
|---|---|---|
| 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​
| Method | Description | Return 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