P4: PLC for SINUMERIK 828D
14.3 Programming
Basic Functions
1116
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Under all circumstances, you should activate the three check boxes of the data classes. Why? If the modified
DB is also called from the data class "Individual", then program errors occur as a result of the fact that it is
deselected: Namely then, INT100 or INT101 access the "old" structure of the DB.
• After making changes to the actual values of a data block, these must then be subsequently loaded into the
target system. (The structure of the data block in the target system must match the structure of the data block
in the project). There are two ways of loading the actual values into the CPU:
-By clicking on the "Write all" symbol.
- By loading the DB in the RUN operating state:
