Siemens Sinumerik 840D sl Function Manual page 288

Connecting Sensors/Actuators
7.5 Safe programmable logic (SPL)
Crosswise data comparison
Data is cyclically exchanged between the PLC and NCK to check the correct
functioning of the two SPLs (PLC and NCK). Just the same as the comparison
between the NCK and the drive, it cross--checks the signals that arrive at the SPL,
the safety--related signals generated by the SPL as well as internal markers.
The discrepancy time for the crosswise data comparison of SPL variables is per-
manently set to 1 s (or 10 s $A_CMDSI).
The following signals are included in the crosswise data comparison between the
NCK and the PLC:
Table 7-5 Signals for crosswise data comparison
NCK- -SPL data
$A_INSE[1 ... 64]
$A_OUTSE[1 ... 64]
$A_INSI[1 ... 64]
$A_OUTSI[1 ... 64]
$A_MARKERSI[1 ... 64]
$A_FSDP_ERR_REAC[1...16]
$A_FRDP_SUBS[1...16]
$A_FRDP_ERR_REAC[1...16]
$A_INSE[65...192]
$A_OUTSE[65...192]
$A_INSI[65...192]
$A_OUTSI[65...192]
$A_MARKERSI[65...192]
$MN_PREVENT_SYN-
ACT_LOCK
$MN_SAFE_SPL_STOP_MODE
$MN_SAFE_SPL_USER_DATA
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Signal image of the PLC data
$A_INSEP[1...64]
$A_OUTSEP[1...64]
$A_INSIP[1...64]
$A_OUTSIP[1...64]
$A_MARKERSIP[1...64]
--
--
--
$A_INSEP[65...192]
$A_OUTSEP[65...192]
$A_INSIP[65...192]
$A_OUTSIP[65...192]
$A_MARKERSIP[65...192]
--
--
--
PLC- -SPL data (DB18)
DBX38.0 ... DBX45.7
DBX46.0 ... DBX53.7
DBX54.0 ... DBX61.7
DBX62.0 ... DBX69.7
DBX70.0 ... DBX77.7
DBW190, DBW200, DBW210
DBW448, DBW458, DBW468
--
DBW548, DBW558, DBW568
DBW220, DBW232, DBW244
DBW578, DBW590, DBW602
--
DBW698, DBW710, DBW722
DBW222, DBW234, DBW246
DBW580, DBW592, DBW604
--
DBW700, DBW712, DBW724
DBX272.0 ...DBX287.7
DBX288.0 ...DBX303.7
DBX304.0 ...DBX319.7
DBX320.0 ...DBX335.7
DBX336.0 ...DBX351.7
DBD256, DBD260, DBD264,
DBD268
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10/15