Siemens SINUMERIK 840D Description Of Functions page 121

11.03
3.7 Safe software cams (SN)
NCK
HW
I/O
I
1
2 ...
...
...
O
...
...
...
I
I
I
1
...
2
...
...
O
...
...
...
PLC
HW
I/O
Fig. 3-23 Interconnecting the required SGEs/SGAs (without SPL)
Assumptions for the The example is applicable for the 1st axis.
example
Position values: SN1- = 300 mm, SN1+ = 600 mm
Speed limit values:
Area 1 = 1000 mm/min
Area 2 = 2000 mm/min
Area 3 = 4000 mm/min
Definition of SGEs/SGAs in the NCK monitoring channel
For 840D
Logical slot for the terminal block:
Slot number of the submodule with SGEs:
Slot number of the submodule with SGAs:
I/O number for the signal SN1+:
I/O number for the signal SN1-:
I/O number for the signal "axis safely referenced":
I/O number for the signal "SBH/SG active":
I/O number for the signal "SBH/SG de-selection":
I/O number for the signal "SBH de-selection":
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
I/O Pro-
SGE
images cessing
SGA
Axis safely referenced
SBH/SG deselection
PLC
User
program
Axis safely referenced
PLC
SGE
I/O
User
SGA
images
program
3 Safety-Related Functions
monitoring channel
SBH/SG deselection
SBH deselection
SBH/SG
SG selection bit 0
SE
SG selection bit 1
SN
SBH/SG active
Monitoring
comparators
SN1+
per axis/spindle
SN1-
Result and data
cross-check
SBH deselection
SBH/SG
SG selection bit 0
SE
SG selection bit 1
SN
SBH/SG active
Monitoring
comparators
SN1+
per axis/spindle
SN1-
monitoring channel
9
1
2
7
6
5
4
2
3
NCK
Drive
SN_04.DSF
3-121