Siemens SINUMERIK 840D Description Of Functions page 267

11.03
The system variables are only set as reference if crosswise data comparison
errors occur.
The system variables are updated whether or not the SI monitoring functions
are active or not active.
The Stop F error codes that result in the system variables being set are listed in
Chapter 4.4.
System variable Axial system variable that contains the current stop. In the case of a value of 2,
$VA_STOPSI a Stop E is active for this axis.
System variable Global system variable that uses a value not equal to 0 to indicate that a Stop E
$A_STOPESI is active on one of the axes.
System variables The status signals of the NCK monitoring channel in the NCK-SPL can be used
$A_INSI[1...64] via these system variables. Each of the system variables $A_INSI[1...64] can
be assigned any safety-relevant output signal or the AND operation of several
signals via axial MD $MA_SAFE_xxx_OUTPUT. These system variables can
only be read by the user program.
Parameterizing example
- $MA_SAFE_CAM_PLUS_OUTPUT[0] = 04010101H
$A_INSI[1].
For a precise description of MD parameterization refer to Chapter 4, "Machine
data for SINUMERIK 840D".
Programming example:
; Copying an SGA from the internal SPL interface
; into the external SPL interface (NCK I/O)
N1010 IDS = 01 DO $A_OUTSE[1] = $A_INSI[1]
These system variables can only be read by the user program.
System variables The status signals of the NCK monitoring channel in the NCK-SPL can be
$A_INSID[1,2] evaluated double-word-serial via this system variable:
$A_INSID[1] corresponds to $A_INSI[1...32]
$A_INSID[2] corresponds to $A_INSI[33...64]
These system variables can only be read by the user program.
System variables The control signals of the NCK monitoring channel can be addressed from the
$A_OUTSI[1...64] NCK-SPL via these system variables. Each of the system variables
$A_OUTSI[1...64] can be assigned any one or several safety-relevant input
signals simultaneously via the axial MD $MA_SAFE_ xxx_INPUT.
Parameterizing example
- $MA_SAFE_VELO_SELECT_INPUT[0] = 04010204H
$A_OUTSI[36].
Programming example:
; SGA "Cam 1+" (see above) controls SG selection
;
N1020 IDS = 02 DO $A_OUTSI[36] = $A_INSI[1]
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
=> SGA "Cam 1+" can be evaluated in the SPL via system variable
=> SGE "SG selection, bit0" is controlled in the SPL via system variable
4 Data Descriptions
4.4 System variable
4-267