Function Call - Only 840D Sl; Oscillation (P5); Signals To Axis/Spindle (Db31 - Siemens SINUMERIK 840D sl Function Manual

19.10.2

Function call - only 840D sl

FC18
For SINUMERIK 840D sl, concurrent positioning axes can be started from the PLC using FC18
(Function Call 18) of the PLC. The following parameters are passed to the function call:
● Axis name/axis number
● End position
● Feedrate
(for feedrate = 0, the feedrate is taken from MD32060 $MA_POS_AX_VELO)
The F value of FC18 is nottransferred to the axis-specific IS DB31, ...DBB78-81 ("F function
(feedrate) for positioning axis")
● Absolute coordinates (G90), incremental coordinates (G91), absolute coordinates along
the shortest path for rotary axes (rotary axis name = DC(value))
Since each axis is assigned to exactly one channel, the control can select the correct channel
from the axis name/axis number and start the concurrent positioning axis on this channel.
Reference:
Function Manual Basic Functions; PLC Basic Program for SINUMERIK 840D sl (P3)
19.11

Oscillation (P5)

19.11.1

Signals to axis/spindle (DB31, ...)

VDI input signals
The PLC user program uses the following signals to control the oscillation process.
DB31, ...
DBX28.0
Edge evaluation: Yes
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
DB31, ...
DBX28.3
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
External oscillation reversal
Signal(s) updated: Cyclic
Brake oscillation motion and move oscillation axis in the opposite direction.
Continue oscillation without interruption
Set reversal point
Signal(s) updated: Cyclic
Reversal point 2
Reversal point 1
Z2: NC/PLC interface signals
19.11 Oscillation (P5)
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