Siemens SINUMERIK 840D Description Of Functions page 270

4 Data Descriptions
4.4 System variable
System variable This system variable is used to display the stack level of the signal change
$A_LEVELSID monitoring in the crosswise data comparison between NCK and PLC. This
variable indicates the current number of signals to be checked by the crosswise
data comparison function.
Commissioning SPL Images of the PLC-SPL interface and markers are provided to make it easier to
commission the SPL. Access to these variables is no longer allowed in the final
NCK-SPL program, i.e. they are only permitted in the commissioning phase!
System variables Images of the PLC-side internal SPL input signals (status signals from the drive
$A_INSIP[1...64] monitoring channel) can be read via these system variables.
Associated DB18 values:
System variables Images of the PLC-side internal SPL input signals (status signals from the drive
$A_INSIPD[1,2] monitoring channel) can be read double-word-serial (32bit) via these system
variables.
Associated DB18 values:
Images of the PLC-side internal SPL output signals (control signals to the drive
System variables
$A_OUTSIP[1...64] monitoring channel) can be read via these system variables.
Associated DB18 values:
System variables Images of the PLC-side internal SPL output signals (control signals to the drive
$A_OUTSIPD[1,2] monitoring channel) can be read double-word-serial (32bit) via these system
variables.
Associated DB18 values:
System variables Images of the PLC-side external SPL input signals (control signals to the PLC-
SPL) can be read via these system variables.
$A_INSEP[1...64]
Associated DB18 values:
System variables Images of the PLC-side external SPL input signals (control signals to the PLC-
$A_INSEPD[1,2] SPL) can be read double-word-serial (32bit) via these system variables.
Associated DB18 values:
System variables Images of the PLC-side external SPL output signals (status signals from the
$A_OUTSEP[1...64] PLC-SPL) can be read via these system variables.
Associated DB18 values:
4-270
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
DB18.DBX54.0 ... DBX61.7
DB18.DBD54, DBD58
DB18.DBX62.0 ... DBX69.7
DB18.DBD62, DBD66
DB18.DBX38.0 ... DBX45.7
DB18.DBD38, DBD42
DB18.DBX46.0 ... DBX53.7
© Siemens AG 2003 All Rights Reserved
11.03