L_TB2P_AxisInterface: Exception error if the EtherCAT device cannot be reached (eliminated from V3.33.0)

Removed from:
Library L_TB2P_TechModulesBasic from V3.33.x (in preparation)
Behavior of the new version:
No exception error occurs when using the FB L_TB2P_AxisInterface on a controller c430 or c5xx

Description of the behavior:

An exception error occurs in the PLC (access violation).

AcessViolation_LTB2P1.png

 AcessViolation_LTB2P2.png

Conditions under which the behavior occurs:

  • An instance of the function module L_TB2P_AxisInterface is called before the EtherCAT bus has reached the Operational state.

 
Affected products:
Function module L_TB2P_AxisInterface from Bibliothek L_TB2P_TechModulesBasic in use with all controllers (C5x0, c430)

The FB in use with i950 is not affected.


Short-term measures, Recommendations, evaluation:
Calling the function block only under the condition that the EtherCAT bus has reached the Operational state.
Solution 1:
Solution1_AccessViolation_L_TB2P.png
Solution 2:
Solution2_AccessViolation_L_TB2P.png


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Meta data
Taxonomy: L_TB2P_TechModulesBasic
AKB-ID: 202500144
Last update: 2026/05/08
Category: Version Informations

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