Block Connections - Siemens Simatic Manual

Fail-safe function blocks for storage and retrieval machines
F_BO_W
F_INT_RD
These blocks are contained in the "Distributed Safety(V1)/ F-Applikation Blocks" library.
The following fail-safe blocks are additionally required under SIMATIC STEP 7 Safety Ad-
vanced:
TP
W_BO
BO_W
RD_FDB
These blocks are located under Statements -> Simple statements.
Note
When generating under SIMATIC STEP 7 Safety Advanced, for the fill-safety
function
"F_ENDZONE_DB16000", "F_ENDZONE_DB15999", "F_ENDZONE_DB15998",
"F_ENDZONE_DB511", "F_ENDZONE_DB510" and "F_ENDZONE_DB509", the
following warning messages are output:
"Network: 00,Initialization of local data '%L0.1 ()' is not realized before the first
jump instruction. Initialize before the first jump instruction."
These warning messages involve additional compiler data, which have no rele-
vance for users and have no impact on the safety integrity.
Note
The library blocks listed under SIMATIC STEP 7 Safety Advanced must be set to
Version 1.0 before integrating the ASRS library. The elements of the system li-
brary that are used must be set to Version 1.0 in the safety administration. Oth-
erwise, error messages can be generated when compiling the safety program.
3.1.3

Block connections

For fail-safe blocks, several issues regarding
block connections must be observed:
Note
Although connections EN and ENO appear in the LAD/FBD editor, they are nei-
ther evaluated nor supplied by the program code of the F block – further, they
may neither be interconnected nor parameterized.
S7-Distributed Safety/SIMATIC Safety - fail-safe function blocks for storage and retrieval machines
Converts 16 pieces of data in the BOOL data type into a value in the
WORD format
Reads an INT value data type indirectly from an F-DB
Generates a pulse with a specific duration
Converts a value in the WORD format into 16 pieces of data in the
bool data type
Converts 16 pieces of data in the BOOL data type into a value in the
WORD format
Reads a value indirectly from an F-DB
blocks "F_BRAKE_TEST", "F_SLP_MONITOR",
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