How to add message rows to the PCS7 message system

Hi everyone does anyone know how to add more message rows to the PCS7 message system, there are 22 at the moment and I want to add more, i have a attached a screen shot of the dialog box.

Thanks

Heath

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Split from PCS7 System Messages.

You can manually make extra message classes in WinCC, but I believe there is no way to get them back into the PCS7 message system interface.  I don't really recommend making manual message classes because of this, they are only available for manually created WinCC alarms, not ones created through compilation.

Based on your screenshot you might be able to further optimize the 6 configurable message classes to make 6 unique classes to give you the features you need instead of H/L class for each alarm, warning,tol.  That is the best practice route.