Siemens SINUMERIK 840D Description Of Functions

4 Data Descriptions 11.03
4.4 System variable
© Siemens AG 2003 All Rights Reserved
4-270 SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
This system variable is used to display the stack level of the signal change
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.
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!
Images of the PLC-side internal SPL input signals (status signals from the drive
monitoring channel) can be read via these system variables.
Associated DB18 values: DB18.DBX54.0 ... DBX61.7
Images of the PLC-side internal SPL input signals (status signals from the drive
monitoring channel) can be read double-word-serial (32bit) via these system
variables.
Associated DB18 values: DB18.DBD54, DBD58
Images of the PLC-side internal SPL output signals (control signals to the drive
monitoring channel) can be read via these system variables.
Associated DB18 values: DB18.DBX62.0 ... DBX69.7
Images of the PLC-side internal SPL output signals (control signals to the drive
monitoring channel) can be read double-word-serial (32bit) via these system
variables.
Associated DB18 values: DB18.DBD62, DBD66
Images of the PLC-side external SPL input signals (control signals to the PLC-
SPL) can be read via these system variables.
Associated DB18 values: DB18.DBX38.0 ... DBX45.7
Images of the PLC-side external SPL input signals (control signals to the PLC-
SPL) can be read double-word-serial (32bit) via these system variables.
Associated DB18 values: DB18.DBD38, DBD42
Images of the PLC-side external SPL output signals (status signals from the
PLC-SPL) can be read via these system variables.
Associated DB18 values: DB18.DBX46.0 ... DBX53.7
System variable
$A_LEVELSID
Commissioning SPL
System variables
$A_INSIP[1...64]
System variables
$A_INSIPD[1,2]
System variables
$A_OUTSIP[1...64]
System variables
$A_OUTSIPD[1,2]
System variables
$A_INSEP[1...64]
System variables
$A_INSEPD[1,2]
System variables
$A_OUTSEP[1...64]

Siemens SINUMERIK 840D Specifications

General

Series	SINUMERIK 840D
Axes	Up to 31
Channels	Up to 10
Operating System	Windows-based
Power Supply	24 V DC
Control Unit Type	CNC
Interface	Ethernet, PROFIBUS
Display	TFT color display
Interpolation	Spline
PLC	Integrated PLC
Data Storage	CompactFlash, USB