Connections; Inputs - Siemens Simatic Manual

Fail-safe function blocks for storage and retrieval machines
Note
When using this block, block F_BO_W/BO_W (FC 176), block F_W_BO/W_BO
(FC 177) and block F_TP/TP (FB 184) must be in the block folder. It is not per-
missible that these are renumbered!
3.8.1

Connections

All bool variables listed in the following tables are preassigned FALSE, all integer variables are preas-
signed 0, all TIME variables are preassigned T#0ms – and all word variables are preassigned
W#16#0.
3.8.1.1

Inputs

Name
T_INTERVAL
T_SAMPLE
SEQUENCE_BR_1
T_OPEN_BR_1
T_CLOSE_BR_1
SEQUENCE_BR_2
T_OPEN_BR_2
T_CLOSE_BR_2
S7-Distributed Safety/SIMATIC Safety - fail-safe function blocks for storage and retrieval machines
Data type Description
Test interval
Time The block requests a brake test after this time has elapsed. This
is signaled at output TEST_REQ using a 1 signal.
Sampling time [ms]
The block sampling time, i.e. the interval in which the safety pro-
Int gram is called (cyclic interrupt OB interval for F-CALL block) is
parameterized here in ms.
T_SAMPLE >= 1
Configuration parameters
The test pattern to be executed and the brake type for brake 1
defined according to the following scheme via this input:
Bit 0: Test with test sequence 1 positive
Word
Bit 1: Test with test sequence 1 negative
Bit 2: Test with test sequence 2 positive
Bit 3: Test with test sequence 2 negative
Bit 4: 0: external brake; 1: Motor holding brake
Brake opening time 1 [ms]
The brake must have been completely opened within this time;
otherwise, a read back error is identified and the test is exited as
Int
not having been successfully completed.
DIAG bit 0 is additionally set for this particular case.
T_OPEN_BR_1 >= 1
Brake closing time 1 [ms]
The brake must have been completely closed within this time;
otherwise, a read back error is identified and the test is exited as
Int
not having been successfully completed.
DIAG bit 0 is additionally set for this particular case.
T_CLOSE_BR_1 >= 1
Configuration parameters
The test pattern to be executed and the brake type for brake 2
defined according to the following scheme via this input:
Bit 0: Test with test sequence 1 positive
Word
Bit 1: Test with test sequence 1 negative
Bit 2: Test with test sequence 2 positive
Bit 3: Test with test sequence 2 negative
Bit 4: 0: external brake; 1: Motor holding brake
Brake opening time 2 [ms]
The brake must have been completely opened within this time;
otherwise, a read back error is identified and the test is exited as
Int
not having been successfully completed.
DIAG bit 1 is additionally set for this particular case.
T_OPEN_BR_2 >= 1
Brake closing time 2 [ms]
The brake must have been completely closed within this time;
otherwise, a read back error is identified and the test is exited as
Int
not having been successfully completed.
DIAG bit 1 is additionally set for this particular case.
T_CLOSE_BR_2 >= 1
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