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