Siemens Sinumerik 840D sl Function Manual page 506

Data Description
8.6 Interface signals
Note
To identify as to whether an SI axis is available, the axis--specific signal
"NCK--Safety Integrated active" can be evaluated.
0 signal:
1 signal:
SGA axis safely referenced
This indicates as to whether the relevant axis/spindle has been safely referenced
(see Chapter 5.4.3, "Axis states").
0 signal:
1 signal:
SGA SN1+, SN1- -, SN2+, SN2- -, SN3+, SN3- -, SN4+, SN4- -
These signals are used to indicate which of the plus or minus cams of cam pair 1,
2, 3 or 4 is "actuated".
0 signal:
Axis/spindle is located to the left of the cam (actual value < cam position)
1 signal:
Axis/spindle is located to the right of the cam (actual value > cam position)
SGA safe cam track
These signals are used to display whether the axis is located on a cam that is
assigned to this cam track (this only applies to the "safe cam track" function).
0 signal:
The axis is not located on a cam of the cam track
1 signal:
The axis is located on a cam of this cam track
SGA safe cam range
The bits (4 bits per cam track) display in which cam range the axis is presently
located (this is only valid for the "safe cam track" function).
SGA safe cam range bits
This signal displays at which cam the axis is presently located (this is only valid for
the "safe cam track" function).
0 signal:
1 signal:
8-506
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Pulses are enabled
pulses are cancelled
Axis is not safely referenced
axis is safely referenced
The axis is not located at this cam
the axis is located at this cam
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