Siemens SINUMERIK 840D sl Function Manual page 738

Z3: NC/PLC interface signals
21.3 Axis Couplings and ESR (M3)
DB31, ...
DBX98.6
Signal irrelevant ...
Corresponding to ...
DB31, ...
DBX99.3
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Signal irrelevant ...
Corresponding to ...
738
Acceleration warning threshold
Without electronic gear.
The following machine data:
MD37550 $MA_EG_VEL_WARNING (threshold value velocity alarm threshold)
MD32300 $MA_MAX_AX_ACCEL (axis acceleration)
Axis accelerated
Signal(s) updated: Cyclic
When the following axis acceleration in the axis grouping of the electronic gear (set in
machine data MD32300) reaches or exceeds the acceleration % block entered in machine
data MD37560, the signal is set to 1.
The following axis acceleration in the axis grouping of the electronic gear is less than the
operating value described above.
Without electronic gear.
The following machine data:
MD37560 $MA_EG_ACC_TOL (threshold value for "Accelerate axis")
MD32300 $MA_MAX_AX_ACCEL (axis acceleration)
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions