The LinkedListAddFirst Function adds an elementary data value to the front of a LinkedList Data Object.
Informal Syntax:
LinkedListAddFirst( LinkedListID, Value )
Formal Syntax:
LinkedListAddFirst(
LinkedListID:=Expression,
Value:=Expression )
The LinkedListAddFirst Function has these parameters.
| Parameter | Type | Description |
|---|---|---|
| LinkedListID | DINT | The identifier of the LinkedList Data Object. |
| Value | ANY_ELEMENTARY | The value to add to the front of the LinkedList Data Object. |
The function does not return a value.
The function reports a runtime error if the LinkedListID parameter does not refer to a valid LinkedList Data Object.
The LinkedListAddFirst Function is an extension to the IEC 61131-3 standard.
For information about functions to manage LinkedList data objects.
For information about all Data Objects supported by Fernhill SCADA.
To learn how IEC 61131-3 is used in Fernhill SCADA.
For the meaning of terms used in Fernhill SCADA.