Siemens Sinumerik 840D sl Function Manual page 544

Data Description
8.7 System variables
System variable $A_OUTSEPD[1...6]
Images of the PLC--side external SPL output signals (status signals from the PLC--
SPL) can be read in a double--word--serial fashion (32 bit) using these system
variables.
Associated DB18 values:
System variables $A_MARKERSIP[1..192]
Images of the PLC--side SPL markers can be read using these system variables.
Associated DB18 values:
System variable $A_MARKERSIPD[1...6]
Images of the PLC--side SPL markers can be read in a double--word--serial fashion
(32 bit) using these system variables.
Associated DB18 values:
System variable $A_PLCSIIN[1..96]
Single--channel direct communication between NCK and PLC--SPL. Signals can be
written by the PLC and read by the NCK.
System variable $A_PLCSIOUT[1..96]
Single--channel direct communication between NCK and PLC--SPL. Signals can be
read by the PLC and read and written by the NCK.
System variable $AC_SAFE_SYNA_MEM
Variable $AC_SAFE_SYNA_MEM contains the number of free synchronizing
action elements Safety Integrated. The number before and after SAFE.SPF has
run is read in order to determine the value of the required elements. The difference
between the two values is then the number that (with a safety margin) must be
entered into machine data $MC_MM_NUM_SAFE_SYNC_ELEMENTS.
8-544
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
DB18.DBD46, DBD50
DB18.DBX70.0 ... DBX77.7 ([1...64])
DB18.DBX416 ... DBDX413.7 ([65...192])
DB18.DBD70, DBD74
© Siemens AG 2015 All Rights Reserved
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