# ID 40049

HLI HMI: addressed HLI section doesn't exist.
Description | Function blocks that can change the properties of user interface elements using the HLI interface require access to the corresponding area on the HLI. This access takes place using the global pointer gpHmiPlc which is initialised by the function block MCV_HliInterface during the PLC startup phase.

The error is displayed by such function blocks, if the pointer addresses an invalid address.

Response | Class | - | No interaction takes place with the motion controller.
Solution | Class | - | Check whether exactly one instance of the function block MCV_HliInterface is called in the PLC application. Check whether the function block that displays the error is not called until the function block MCV_HliInterface displays TRUE at its output "Initialized".
Error type | -