Siemens SINUMERIK 840D sl Function Manual page 514

Data descriptions
9.7 System variable
System variable $A_INSE[1...192]
The system variables $A_INSE contain the input circuit of the NCK-SPL.
System variable $A_INSED[1...6]
Image of the safety input signals (external NCK interface).
$A_INSED[1] corresponds to $A_INSE[1...32]
$A_INSED[2] corresponds to $A_INSE[33...64]
$A_INSED[3] corresponds to $A_INSE[65...96]
$A_INSED[4] corresponds to $A_INSE[97...128]
$A_INSED[5] corresponds to $A_INSE[129...160]
$A_INSED[6] corresponds to $A_INSE[161...192]
System variables $A_INSID[1...6]
The status signals of the NCK monitoring channel can be evaluated in the NCK-SPL in a double-
word-serial fashion using these system variables:
$A_INSID[1] corresponds to $A_INSI[1...32]
$A_INSID[2] corresponds to $A_INSI[33...64]
$A_INSID[3] corresponds to $A_INSI[65...96]
$A_INSID[4] corresponds to $A_INSI[97...128]
$A_INSID[5] corresponds to $A_INSI[129...160]
$A_INSID[6] corresponds to $A_INSI[161...192]
These system variables can only be read by the user program.
System variables $A_OUTSE[1...192]
The system variables $A_OUTSE contain the outputs of the NCK-SPL.
System variables $A_OUTSI[1...192]
The control signals of the NCK monitoring channel can be addressed from the NCK-SPL using
these system variables. Each of the system variables $A_OUTSI[1...192] can be
simultaneously assigned any one or several safety-related input signals by using the axis-
specific MD $MA_SAFE_xxx_INPUT.
Parameterizing example:
$MA_SAFE_VELO_SELECT_INPUT[0] = 04010204H
⇒ the SGE "SG selection, bit 0" is controlled in the SPL using the system variable
$A_OUTSI[36].
Programming example:
; SGA "cam 1+" (refer above) controls the SG selection
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Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated