?Corrected from:
PLC Designer V3.28
Behavior of the new version:
Online access to the Safety Controller c250-S is possible without the assertion message specified below.
Description of the behaviour:When going online on a safety controller, the assertion message (or exception) occurs:
OnExecuteServiceSynchronously got called for an incompatible channel (!= IChannel4)
Under what conditions does the behaviour occur?
This behavior occurs when the button <Login> in the toolbar is clicked several times in succession to establish a connection to the Safety Controller c250-S during connection setup.
Affected products:
PLC Designer V3.18
Safety Controller c250-S
Short-term measures:
To go online, click the <Login> button in the toolbar only once or use the corresponding menu command 'Online' > 'Login'.
If, after the function restriction has occurred, a new login to the Safety Controller fails, close the PLC Designer and restart it.
Evaluation/Recommendations:
Directly after the first click on the <Login> button in the toolbar, it is not displayed as 'pressed'. Therefore it can easily happen that "just to be on the safe side" the button is clicked even more times. However, this leads to the function restriction described.
It may happen that logging in is no longer possible after the function restriction has occurred. After restarting the PLC Designer and reloading the project, logging in is possible again.
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