Independent, Timer-Controlled Output Of Cam Signals - Siemens SINUMERIK 840D sl Function Manual

N3: Software cams, position switching cycles - only 840D sl
9.3 Output of cam signals
Further settings
If the response described here is to be applied,
bit 0=0 must be set in the following machine data:
MD10485 SW_CAM_MODE
9.3.5

Independent, timer-controlled output of cam signals

Independent, timer-controlled cam output
Each switching edge is output separately per interrupt due to the timer-controlled,
independent (of interpolation cycle) cam output.
Interaction between cam signals due to:
● single output per interpolation cycle
● output time determined by highest priority cam pair (lowest cam pair number)
does not take place.
A total of eight timer-controlled cam outputs per interpolation cycle can be configured for
setting/resetting the four onboard outputs. The signal states of the plus and minus cams are
also made available as standard on the PLC interface for the timer-controlled variant, but
they are not relevant or accurate with a timer-controlled output.
Signal generation
MD10485 SW_CAM_MODE Bit 1
The above machine data must be set beforehand to specify
how the signals to be gated are to be generated:
Bit
Not set
set
710
Signal generation
Inversion of signal response of plus cam when:
plus cam - minus cam ≥ 180 degrees
No inversion of signal response of plus cam:
plus cam - minus cam ≥ 180 degrees
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions