What causes KUKA Robot alarm KRC0462?

Attempting to access internal fields of $PRO_TRACE or $MOTION_TRACE arrays without proper safeguard credentials. Trying to read or modify protected structure members marked as private or system-reserved in the KRC4 runtime. Using SHOW VAR with nested indexing on restricted program execution state variables. Accessing motion trace elements with array indices that reference protected synchronization data. Illegal component access during active program execution when the system is in a protected operational mode.

How do I fix KUKA Robot alarm KRC0462?

1. Verify that the operator has appropriate access rights and expert or maintenance mode is properly enabled on the smartPAD 2. Simplify the variable access query to use only permitted top-level fields without deep nesting into protected sub-components 3. Consult the KRL language reference to confirm which trace and program structure members are accessible at your privilege level 4. Use WorkVisual or the Program Editor to examine the variable definitions and identify which fields are marked as read-only or restricted 5. If debugging is required, enable the KUKA diagnostic trace or use external logging instead of direct motion trace inspection 6. Contact KUKA service to escalate access permissions if legitimate diagnostic access to protected fields is required for troubleshooting

KUKA Robot codes

axismd.ai

KUKA Robot Controller

System · Basic

Alarm KRC0462

KUKA Robot KRC0462 - Access to component not allowed

An attempt was made to access a sub-component or field of a protected program or motion trace object that is not permitted at the current access level. This security mechanism prevents unauthorized modification or inspection of internal system structures and program internals.

KUKA RobotSystemBasic

KRC0462

KUKA Robot KRC0462 - Access to component not allowed

Access to component not allowed

Common Causes

Attempting to access internal fields of $PRO_TRACE or $MOTION_TRACE arrays without proper safeguard credentials
Trying to read or modify protected structure members marked as private or system-reserved in the KRC4 runtime
Using SHOW VAR with nested indexing on restricted program execution state variables
Accessing motion trace elements with array indices that reference protected synchronization data
Illegal component access during active program execution when the system is in a protected operational mode

Troubleshooting Steps

1Verify that the operator has appropriate access rights and expert or maintenance mode is properly enabled on the smartPAD
2Simplify the variable access query to use only permitted top-level fields without deep nesting into protected sub-components
3Consult the KRL language reference to confirm which trace and program structure members are accessible at your privilege level
4Use WorkVisual or the Program Editor to examine the variable definitions and identify which fields are marked as read-only or restricted
5If debugging is required, enable the KUKA diagnostic trace or use external logging instead of direct motion trace inspection
6Contact KUKA service to escalate access permissions if legitimate diagnostic access to protected fields is required for troubleshooting

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