Siemens SIMATIC S7 F Manual page 236

Fail-Safe Blocks
8.5.1 F_S_BO
Function
This block safely transfers 10 data items of the data type F_BOOL to another F-
run-time group. It can be received there by the F_R_BO block.
The data to be sent (e.g. outputs from other blocks) is stored at the inputs
SD_BO_xx.
The output S_DB must be connected with the input of the same name in the
received block.
I/Os
Name
Inputs:
SD_BO_00
...
SD_BO_09
Output: S_DB
Error Handling
None
8-48
Data Type Explanation
F_BOOL Send date 00
...
F_BOOL Send data 09
F_WORD Separate instance DB no.
Default
0
0
0
Fail-Safe Systems
A5E00085588-03