Siemens SINUMERIK 840D Description Of Functions

11.03 4 Data Descriptions
4.4 System variable
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
4-263
4.4 System variable
4.4.1 System variable for SINUMERIK 840D
Table 4-9 Overview of system variables
System variables Meaning Value range Data type Possible access for
Part
program
Synchr.
action
l s l s
Actual position
$VA_IS
[
Achse
]
Safe actual position for Safety
Integrated
DOUBLE x x
$AA_IM[Achse]
Actual position for closed-loop control DOUBLE x x
$VA_IM[Achse]
Encoder actual value in machine
coordinate system
DOUBLE x x
Internal inputs/outputs
$A_INSI
[
n
]
NCK input n = 1, 2, ... 64
stands for
No. of input
BOOL x x
$A_INSID
[
n
]
NCK inputs n = 1,2 INT x x
$A_INSIP[n]
Image of the PLC input n = 1,2, ...64 BOOL x x
$A_INSIPD[n]
Image of the PLC-SPL inputs from the
drive monitoring channel
n = 1,2 INT x x
$A_OUTSI[n]
NCK output n = 1, 2, ... 64
stands for
No. of output
BOOL x x x x
$A_OUTSID[n]
NCK outputs n = 1,2 INT x x x x
$A_OUTSIP
[
n
]
Image of the PLC output n = 1, 2, ... 64 BOOL x x
$A_OUTSIPD[n]
Image of the PLC-SPL outputs from
the drive monitoring channel
n = 1,2 INT x x
External inputs/outputs
$A_INSE[n]
NCK input n = 1, 2, ... 64
stands for
No. of input
BOOL x x
$A_INSED
[
n
]
NCK inputs n = 1,2 INT x x
$A_INSEP[n]
Image of a PLC-SPL input from the
PLC hardware I/O
n = 1, 2, ... 64
stands for
No. of input
BOOL x x
$A_INSEPD[n]
Image of PLC-SPL inputs from the
PLC hardware I/O
n = 1,2 INT x x
$A_OUTSE[n]
NCK output n = 1, 2, ... 64
stands for
No. of output
BOOL x x x x
$A_OUTSED[n]
NCK outputs n = 1,2 INT x x x x
$A_OUTSEP[n]
Image of a PLC-SPL output from the
PLC hardware I/O
n = 1, 2, ... 64
stands for
No. of output
BOOL x x
$A_OUTSEPD[n]
Image of PLC-SPL outputs to PLC
hardware I/O
n = 1,2 INT x x
Markers and timers
$A_MARKERSI[n]
Markers n = 1, 2, ... 64
stands for
No. of marker
BOOL x x x x
$A_MARKERSID[n] Markers
(from SW 4.4.18)
n = 1, 2 INT x x x x
$A_MARKERSIP[n]
Image of the PLC markers n = 1,2, ...64 BOOL x x
System variables

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