Siemens SINUMERIK 840D sl Function Manual page 330

Data Description
8.4 System variables
Table 8-10 Overview of system variables
$A_OUTSEP[n] Image of a PLC – SPL output
from the PLC HW I/O
$A_OUTSEPD[n] Image of PLC – SPL outputs from
PLC HW I/O
Markers and timers
$A_MARKERSI[n] Flag bits
$A_MARKER- Flag bits
SID[n]
$A_MARKER- Image of the PLC markers
SIP[n]
$A_MARKER- Image of the PLC markers
SIPD[n]
$A_TIMERSI[n] Timers
$A_STATSID Crosswise data comparison error
triggered if the value is not equal
to 0
$A_CMDSI 10x change timer timeout value
for long forced checking proce-
dure pulses and/or single-channel
test stop logic
$A_LEVELSID Crosswise data comparison stack
level display: Number of signals
for which NCK and PLC detect
different signal levels
Note:
r –> read, w –> write
An implicit preliminary stop is generated
Only permitted in the commissioning phase
1)
The number of these system variables depends on the option SI Basic or SI Comfort. For SI Basic, the following
applies:
4 INSE[1..4]
4 OUTSE[1..4]
4 INSED[1]
4 OUTSED[1]
8-330
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
n = 1, 2, ... 64 BOOL
stand for the
No. of the out-
put
n = 1, 2 INT
n = 1, 2, ... 64 BOOL
stands for the
No. of the
marker
n = 1, 2 INT
n = 1,2, ...64 BOOL
n = 1, 2 INT
n = 1, 2...16 REAL
stand for the
No. of the timer
Bits 0...27 INT
crosswise data
comparison er-
ror in the I/O
signals or flag
bits Bit 28
crosswise data
comparison er-
ror "SPL protec-
tion status"
Bit 29 timeout in
the comm. be-
tween NCK and
SPL Bit 30 PLC
signals a stop to
the NCK
Bit 0 = 1 BOOL
10x time active
0...320 INT
© Siemens AG, 2006. All rights reserved
03.06
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