Siemens SINUMERIK 840C Installation Instructions Manual page 821

12 Functional Descriptions
12.7.2 Description of the spindle modes
0°
last M19 position:
Actual position:
Specified travel:
The spindle has thus moved 90° from the last M19 position in the specified
direction, so the total is
Distance to be traversed:
Example 2
12–46
90°
0°
–180°
–90°
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SINUMERIK 840C (IA)