Actual Value Setting With Loss Of The Referencing Status (Preseton) - Siemens SINUMERIK 840D sl Function Manual

Detailed description
3.7 Actions in synchronized actions
Supplementary condition
Time of execution of synchronized actions
Program code
; Enable of the axis container rotation.
N10 AXCTSWE(CT3)
; Traversing of the container axis AX_A => before the axis is traversed, there
; is a waiting period for the end of the axis container rotation: $AN_AXCTSWA[CT3]==0
N20 AX_A = 10
; Cancellation of the enable. No effect!
WHEN <condition> DO AXCTSWEC(AX_A)
N30 G4 F1
Because after the enable of the axis container rotation in block N10, an axis of the axis
container (AX_A) is used in block N20 and this use leads to the system waiting for the end of
the axis container rotation, the synchronized action only comes together with the program
block N30 in the main run and has therefore no effect.
Remedy:
Program code
; Enable of the axis container rotation.
N11 AXCTSWE(CT3)
; Cancellation of the enable.
WHEN <condition> DO AXCTSWEC(AX_A)
N21 ...
; Traversing of the container axis AX_A => before the axis is traversed, there
; is a waiting period for the end of the axis container rotation: $AN_AXCTSWA[CT3]==0
N31 AX_A = 10
Note
Without the executable block N21, the synchronized action would only be implemented after
the end of the axis container rotation with the next executable program block N31 in the main
run and would therefore have no effect, just the same as in the example above.
3.7.16

Actual value setting with loss of the referencing status (PRESETON)

Function
The PRESETON() procedure sets new actual values in the machine coordinate system (MCS)
from synchronized actions for one axis. This corresponds to work offset of the axis MCS. The
axis is not traversed.
From synchronized actions, PRESETON must only be used on command axes, i.e. on axes that
have been started from a synchronized action. The axis must also be assigned to the channel,
94
Comment
; Executable NC block
Function Manual, 08/2018, 6FC5397-5BP40-6BA2
Synchronized actions