# ID 40019

Pointer to structure containing information about the HLI specification is 0.
Description | A PLC application that communicates with the motion controller via the HLI interface has to call one instance of the function block MCV_HliInterface. This FB checks whether the definition of the HLI interface is the same on the PLC side as the HLI definition on the motion controller side.

Therefore, this FB requests information from the motion controller via the HLI interface implemented.

If the FB receives no information after the request, the FB MCV_HliInterface issues then provides this error message at its output "ErrorID" for the PLC application.

Response | Class | - | The FB MCV_HliInterface sets its “Error” output to TRUE and the output “Initialized” to FALSE.
Solution | Class | - | Please contact the controller supplier and quote the error number.
Error type | -