Siemens SINUMERIK 840D sl Function Manual page 510

Data descriptions
9.7 System variable
System variable
$A_XFAULTSI Bit 0=1:
In a crosswise data comparison be‐
tween NCK and drive of any partic‐
ular safety axis, an actual value er‐
ror was detected.
Bit 1=1:
In the crosswise data comparison
between NCK and drive of any axis,
an error was detected and the delay
time (<>0) until Stop B is initiated for
this axis is either running or has al‐
ready expired.
$VA_XFAULTSI[ax‐ Bit 0=1:
is]
The crosswise data comparison for
this axis between NCK and drive
has detected an actual value error
Bit 1=1:
In the crosswise data comparison
between NCK and the drive of this
axis, an error was detected and the
delay time (<>0) until STOP B is in‐
itiated in this axis is either running
or has already expired.
$VA_STOPSI[axis] Current Safety Integrated stop of
the relevant axis
-1: No stop
0: STOP A
1: Stop B
2: Stop C
3: Stop D
4: Stop E
5: STOP F
10: Test stop
11: Test of the external pulse can‐
cellation
$A_STOPESI Actual Safety Integrated STOP E for
any axis
0: No stop
otherwise: presently one axis has
an active Stop E
$A_PLCSIIN[n] Single-channel direct communica‐
tion between NCK and PLC-SPL.
Signals can be written by the PLC
and read by the NCK.
510
Meaning
[0,3]
[0,3]
[-1,11]
[0,MAX_INT]
n = 1,2, ... 96
Value range Data type
INT
INT
INT
INT
BOOL
1)
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Possible access for
Part Synchronized
program action
r w r w
x x
x x
x x
x x
x x
Safety Integrated