Siemens Sinumerik 840D sl Function Manual page 320

Connecting Sensors/Actuators
7.5 Safe programmable logic (SPL)
Table 7-10 Overview of system variables, continued
Miscellaneous
$A_STATSID A value not equal to 0
means that an error has
occurred in the crosswise
data comparison.
$A_CMDSI Control word for cross-
wise data comparison
between the NCK and
PLC (SPL--CDC)
$A_LEVELSID CDC stack level display:
Number of signals for
which NCK and PLC de-
tect different signal levels
$A_PLCSIIN[n] Single--channel commu-
nication between NCK
and PLC SPL
$A_PLCSIOUT[n] Single--channel commu-
nication between NCK
and PLC SPL
$AC_SAFE_SYN Free safety synchronizing
A_MEM elements
$VA_SAFE_TYPE Information about the ac-
[axis] tive safety operating
mode of this axis
Note:
r --> read, w - -> write
7-320
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
INT
Bit 0...5=1: CDC error
in I/O signals or mar-
kers or dynamic data
of the SENDDP/
RECVDP communica-
tion
Bit 26=1: PROFIsafe
communication error
occurred
Bit 27=1: CDC error in
static data
Bit 28=1: CDC error
"SPL protection
status"
Bit 29=1: Timeout in
the communications
between NCK and
SPL
Bit 30=1: PLC signals
a stop to the NCK
n = 1: Increase the BOOL
time for the signal
change monitoring
to 10 s
0...320 INT
1, 2, ... 96 BOOL
1, 2, ... 96 BOOL
[0, MAX_INT]
[0,2] INT
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10/15
r w r w
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