To evaluate sensor data or machine states, you need current values from an OPC UA server. The function read iot values() reads the values for the specified node IDs. It writes the results to a list.
Parameters
Parameter | Type | Default value | Description |
|---|---|---|---|
a | String (alias) | – | IoT server alias. See IOT (Input agent). |
b | String (list name) | – | Name of the list with the node IDs to read. Separate multiple IDs with a comma. |
c | String (list name) | – | Name of the list the function writes the read values to. |
d | Boolean | false | Optional. If true, the function clears list c, before it inserts new values. |
Example: List b contains ns=3;i=1001,ns=5;s=Int16DataItem to read two nodes in one call.