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Entry type: FAQ Entry ID: 16770188, Entry date: 08/29/2003
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Problems opening CEMAT faceplates

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QUESTION:  
Why does an empty faceplate open in CEMAT V5?

ANSWER:  
The contents of CEMAT faceplates are defined via OCX files. The relevant OCX checks which project standard is installed and adapts the images in the faceplate accordingly. The system locates the OCXs via corresponding entries in the registry.

The OCX files are automatically registered by the setup when CEMAT V5 is installed. This entry is "adapted" (i.e. changed) by the system in the registry if the OCX files are moved or copied by the user to another folder. From this point onwards, this setting no longer fits, and the display of the faceplates in PCS 7 CEMAT OS Runtime doesn't work.

Consequently, never copy, move or delete OCX files manually!

As soon as you discover irregularities in the faceplate display and are unsure whether the OCX files have been moved, copied or deleted, check the appropriate entries in the registry, please. In order to do this, open the registry (regedit.exe) and look for appropriate CEMAT OCX entries (e.g. for "C_GROUP_DLG.ocx"). There are normally several entries per OCX file. Keep looking until the message "No further entries present" appears. The places found in the registry for this keyword should ALL relate to "D:\Cem_V5\Bin" (without exception). You will need to re-install the PC completely as soon as you find another path (e.g. "Recycle Bin")! 

If you find another path entry and then only install CEMAT V5, the system will only make new registry entries. The old (incorrect) entries remain; consequently, the display of the faceplates will still not work in WinCC Runtime.

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