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Siemens SIMATIC S7 F

Siemens SIMATIC S7 F
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Fail-Safe Blocks
Fail-Safe Systems
A5E00085588-03
8-81
8.6.14 DB_INIT
Function
The DB_INIT function, which is a standard function packaged in the Failsafe
Blocks library, provides new functionality to initialize F-run-time groups at the
direction of the F_SHUTDN function block.
The DB_INIT function block is automatically placed by the compiler in a CFC chart
named @F_DbInit. Connections between the DB_INIT function and the shutdown
logic are also created automatically.
Note
No other logic shall be permitted to be placed within the @F_DbInit CFC.
Connections may not be made to any inputs or outputs of these blocks. Any logic
placed within the @F_DbInit CFC will automatically be deleted during the
compile.
I/Os
The inputs and outputs will not be explained here since this is logic that the system
automatically generates.

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