Siemens SINUMERIK 840D sl Programming Manual page 66

Parameter description
2.2 Parameter overview
Example:
Transfer of parameter _OVR[21] (compensation value, angle at 1st axis of level) of
measuring cycle CYCLE998 (Measure angle), e.g., to swivel cycle Cycle800.
In accordance with MD $MN_INT_INCR_PER_DEG, the calculation resolution = 1000.
_OVR[21]=-0.000345
IF ((ABS(_OVR[21] * $MN_INT_INCR_PER_DEG)) < 1)
_OVR[21]=0
ENDIF
Explanation
If the value of parameter _OVR[21] is less than the programmed calculation resolution, it is
rounded down to zero.
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Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles