Unhandled exception when using <Undo> and <Redo> in Hot Connect changes (corrected from V4.1)
Corrected from:
PLC Designer V4.1
Behavior of the new version:
The 'Undo' and 'Redo' commands can be used in relation to EtherCAT Hot Connect editing functions.
Description of behavior: The PLC Designer displays an unhandled exception: System.NullReferenceException; Object reference not set to an instance of an object
Conditions under which the behavior occurs; The exception occurs when a change to the settings in the 'Hot Connect' tab of the EtherCAT master is undone or restored.
Affected products; PLC Designer from V4.0
Short-term measures, Recommendations, Rating:
Do not use the 'Undo' and 'Redo' commands to change settings of the EtherCAT Hot Connect functionality.
