Siemens SINUMERIK 840D sl Function Manual page 110
Synchronized actions
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3.7 Actions in synchronized actions
Measurement tasks and state changes
When a measurement task has been executed from a synchronized action, the control system
responds in the following way:
State
Operating mode change A measurement task activated by a modal synchronized action is not affec‐
Reset
Block search
REPOS
End of program
Remarks
System variables
The following system variables can be used in conjunction with synchronous actions:
● $AA_MEAACT (axial measuring active)
● $A_PROBE (probe state)
● $AA_MM1 ... 4 (probe position 1st to 4th trigger (machine coordinate system))
The following system variable cannot be used in conjunction with synchronized actions:
● $AC_MEA (probe has responded)
Measurement job
Only one measurement job at a time may be active for an axis.
Priority with more than one measurement
A new measurement task for the same axis has the effect that the trigger events are reactivated
and the measurement results reset.
Measurement jobs started from the part program cannot be influenced from synchronized
actions. If a measurement task is started from a synchronized action for an axis for which a
measurement task is already active from the part program, an alarm is displayed.
If a measurement task is already active from a synchronized action, measurement can no
longer be started from the part program.
Saving measurement results
A FIFO memory is set up in the $AC_FIFO system variables to save the measurement results.
See Section "FIFO variables ($AC_FIFO) (Page 31)".
110
Response
ted by a change in operating mode. It remains active beyond block limits.
The measurement task is aborted.
Measurement tasks are collected, but not activated until the programmed
condition is fulfilled.
Activated measurement tasks are not affected.
Measurement tasks started from static synchronized actions remain active.
Function Manual, 08/2018, 6FC5397-5BP40-6BA2
Synchronized actions
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