system.opc.readValues
This function is used in Python Scripting.
Description​
This function is equivalent to the system.opc.readValue function, except that it can operate in bulk. You can specify a list of multiple addresses to read from, and you will receive a list of the same length, where each entry is the qualified value object for the corresponding address.
Client Permission Restrictions​
This scripting function has no Client Permission restrictions.
Syntax​
system.opc.readValues(opcServer, itemPaths)
Parameters​
| Type | Parameter | Description |
|---|---|---|
| String | opcServer | The name of the OPC server connection in which the items reside. |
| String[] | itemPaths | A list of strings, each representing an item path, or address to read from. |
Returns​
QualifiedValue[] - A sequence of objects, one for each address specified, in order. Each object will contains the value, quality, and timestamp returned from the OPC server for the corresponding address.
Scope​
All