Safety Integrated - Industry - Siemens

Ex. No.
4
Unconditional trigger of safe standstill
The output ENABLE_AXIS can be directly set to 0 via the input
SAFE_STOP. This is achieved by setting SAFE_STOP to 0.
PROFIsafe CRC
PROFIsafe CRC
The so-called PROFIsafe CRC has to be connected to the input
FD_CRC_PSAFE [From Drive CRC PROFIsafe]. This CRC is defined
by the redundant coarse position and the START-CRC in
the SMx20 encoder module. The PROFIsafe CRC is simulated
in the function block "F_DRIVE" and compared with the CRC already
transmitted. To simulate the PROFIsafe CRC, encoder information
such as the redundant coarse position data has to
be transmitted to the formal operand FD_RED_ROUGH_POS
and the START-CRC to the operand FD_START_CRC.
Coarse position in relation to the redundant inverted coarse
position
In addition to the redundant coarse position, forwarded to
FD_RED_ROUGH_POS, the standard coarse position information
of the encoder has to be transferred to the relevant block
parameter FD_ROUGH_POS. FB300 then checks whether
these two values match.
Stop categories
The delay times for Stop categorie 1 are to be stored in the
safety program by means of an application.
In SIMOTION Version V4.0 / SINAMICS 2.4 or later, OFF 3 can
be parameterized upon triggering of safe standstill stating a
delay time for the safe standstill.
454 Function Example No. MC-FE-I-004-V11-EN
START-CRC
The START-CRC is applied to parameter FD_STRT_CRC. The
PROFIsafe CRC is again defined from the redundant coarse position.
The START-CRC consists of the one-to-one NODE-ID of the SMx
20 encoder module.
This information avoids incorrect resp. double addressing,
thus applying the PROFIsafe principle "Identification for transmitter
resp. receiver".
SIMOTION CRC
The FD_SPEED_SIMO and FD_LIVE_SIGN data transmitted by
the SIMOTION controller are saved by the SIMOTION function
block using a CRC. This is expected at the input
FROM_DRIVE_8 and simulated resp. compared in FB300.
Version comparison
The consistency of the function blocks "SIMOTION" and
"Simatic F-CPU" is checked by means of a certain number before
they can be used. The correct version of the SIMOTION
function block has to be created at the input FD_VERSION
[From Drive Version].