Lead/Delay Times (Dynamic Cam) - Siemens SINUMERIK 840D sl Function Manual

N3: Software cams, position switching cycles - only 840D sl
9.2 Cam signals and cam positions
Axis/cam assignment
A cam pair is assigned to a machine axis using general machine data:
MD10450 SW_CAM_ASSIGN_TAB[n]
(assign software cams to machine axes).
Note
Changes to an axis assignment take effect after the next NCK power-up.
Cam pairs to which no axis is assigned are not active.
A cam pair can only be assigned to one machine axis at a time.
Several cam pairs can be defined for one machine axis.
9.2.4

Lead/delay times (dynamic cam)

Times
To compensate for any delays, it is possible to assign two lead or delay times with additive
action to each minus and plus cam for the cam signal output.
The two lead or delay times are entered in a machine data and a setting data.
Note
The input of negative time values causes a delay in the output of cam signals.
Input in machine data
The first lead or delay time is entered in the following general machine data:
MD10460 SW_CAM_MINUS_LEAD_TIME[n]
(lead or delay time on minus cams)
MD10461 SW_CAM_PLUS_LEAD_TIME[n]
(lead or delay time on plus cams)
The following can be entered in these machine data, for example:
● Constant internal delay times between actual-value sensing and cam signal output (e.g.
● Constant external delay times
704
as determined by an oscilloscope)
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions