Position-Related Switch Request - Siemens SINUMERIK 840D sl Function Manual

Preconditions
For simulated measuring, all of the machine axes in the system must be parameterized as
simulated axes:
● MD30130 $MA_CTRLOUT_TYPE[axis] = 0 (simulated setpoint)
● MD30240 $MA_ENC_TYPE[axis] = 0 (simulated encoder)
8.7.2

Position-related switch request

Function
"Position-related switch request" is selected using the following NCK-specific machine data:
● MD13230 $MN_MEAS_PROBE_SOURCE = 0
● MD13231 $MN_MEAS_PROBE_OFFSET = <position offset>
The axial switching position is calculated from the axial end position programmed in the
measuring block and the parameterized position offset:
Switching position[axis] = End position[axis] - position offset
During the measuring block, it is cyclically checked as to whether the switching position of the
axis is reached:
Setpoint position[axis] ≥ switching position[axis]
When the switching position is reached, the rising edge of the switching signal is generated
for probes 1 and 2. One position controller cycle later, the following edges.
Figure 8-25
The measured value is the actual value of the axis at the instant in time that the switching
signal programmed in the measuring block occurs (rising / falling edge).
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Position-dependent switch request
M5: Measurement
8.7 Simulated measuring
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