System Variables For Sinumerik 840D Sl - Siemens SINUMERIK 840D sl Function Manual

Connecting Sensors/Actuators
7.3 Safe programmable logic (SPL)
7.3.9

System variables for SINUMERIK 840D sl

The following system variables can only be used in combination with SINUMERIK
Safety Integrated. They are used when programming the safe programmable logic
(SPL).
Also see Chapter 8.4.2 "Description of the system variables" for a detailed descrip-
tion of the system variables.
Table 7-7 Overview of system variables
System Description
variables
Actual position
$VA_IS[axis] Safe actual position for
Safety Integrated
$AA_IM[axis] Actual position of the
closed–loop control
$VA_IM[axis] Encoder actual value in
the machine coordinate
system
Error status
$A_XFAULTSI In the crosswise data
comparison between
NCK and drive of any
axis, an actual–value
error has been detected
$VA_XFAULTSI The crosswise data
[axis name] comparison for this axis
between NCK and drive
has detected an actual
value error
$VA_STOPSI Current Safety Integra-
ted stop of the relevant
axis
$A_STOPESI Current Safety Integra-
ted STOP E for any axis
Internal SPL inputs/outputs
$A_INSI[n] NCK input
$A_INSID[n] NCK inputs
$A_INSIP[n] Image, PLC input
$A_INSIPD[n] Image of the PLC inputs n = 1, 2
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Value range Data type
DOUBLE
DOUBLE
DOUBLE
INT
INT
INT
INT
n = 1, 2, ... 64 BOOL
stand for the
No. of the input
n = 1, 2 INT
n = 1,2, ...64 BOOL
INT
© Siemens AG 2008 All Rights Reserved
05.08
Possible access for
Part Synchr.
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