Synchronized Actions For Safety Integrated - Siemens Sinumerik 840D sl Function Manual

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S Crosswise data comparison checks whether the "commissioning phase" has
been completed. If errors are detected in the crosswise data comparison, a
"STOP D/E" is triggered on the NCK and drive depending on this criterion. If the
commissioning phase has not been completed after booting, Alarm 27095 "SPL
protection not activated" is repeatedly displayed (every 3 hours).
S In the case of a crosswise data comparison error, no system response is
initiated regarding the SGE/SGA processed by the SPL. Users must implement
this themselves. The only exception is when a system error is detected as was
described above.
7.5.2

Synchronized actions for Safety Integrated

Motion--synchronizing actions (or "synchronizing actions" for short) are instructions
programmed by the user, which are evaluated in the interpolation cycle of the NCK
in synchronization with the execution of the part program. If the condition program-
med in the synchronized action is fulfilled (logical expression) or if none is speci-
fied, then actions assigned to the instruction are activated in synchronism with the
remainder of the part program run.
Description
The number of programmable synchronized action blocks depends entirely on the
configurable number of synchronized action elements. The number of storage
elements for general synchronized motion actions (synchronized action elements)
is defined in machine data MD 28250 MD28250 MM_NUM_SYNC_ELEMENTS.
The memory management is listed separately in order to be able to handle
synchronized actions for SAFE.SPF independently.
MD28251 $MC_MM_NUM_SAFE_SYNC_ELEMENTS is used to configure the
memory for the safety synchronized action elements.
All modal synchronized actions that are programmed in the sub--program
/_N_CST_DIR/_N_SAFE_SPF retrieve their elements from this memory area.
In order to determine the required for synchronized action elements, at the start
and at the end of SAFE.SPF, system variables $AC_SAFE_SYNA_MEM can be
read. The difference between these values is then the number of synchronized
action elements required. This value plus a possible reserve must be entered into
MD28251 $MC_MM_NUM_SAFE_SYNC_ELEMENTS.
Reference:
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Function Description Synchronized Actions
Connecting Sensors/Actuators
7.5 Safe programmable logic (SPL)
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