Siemens SIMATIC FM 458-1 DP User Manual page 170

Configuring
4-112
3. Individually mark the OCM-capable connections in the WinCC
attribute tab if not all of the connections are to be selected as in Step
2 (refer to the next screenshot).
Select, if block connections are to be
selectively selected
Selectively select the block
connections
4. Repeat steps 2 and 3 for all of the blocks that are to be controlled and
monitored.
Application Module FM 458-1 DP - User Manual
A5E01078222-02 Edition 03.2009