Simatic 7 PLC (CPU 315-2DP) - online problem

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KAG

Simatic 7 PLC (CPU 315-2DP).

In online mode (CPU 315-DP), big FC networks (with large number of FBD/STL blocks) are only partially coming in online, where as small networks (with one or two blocks) are fully becoming online. Even if select the particular big network and go to online, it always comes partially (always top part). One time we up loaded station complete and tried, but no use.

Moreover same unit has another PLC with simatic-7 (CPU 315). In online mode we are not facing this type of problem and even more than one net works come in online simultaneously. We are using simatic field PG with same setting in both PLC.

PG/PC interface for 315-2DP PLC is CP5611 (MPI)
PG/PC interface for 315 PLC is CP5611 (MPI)
 
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