Have you checked that the 2 first bytes in the string are correct?
The first byte of the string contains max length and the second byte current length of the string they must be correct in order for WinCC to display the string.
Have you checked that the 2 first bytes in the string are correct?
The first byte of the string contains max length and the second byte current length of the string they must be correct in order for WinCC to display the string.
There must be another kind of driver. Probably "Profibus" without the "DP".
I dont have personal experience with WinCC, but I am certain that it is possible to access DBs via Profibus.
Study the manuals for WinCC.