Siemens Sinumerik 840D sl Programming Manual page 151

Syntax
<rotary axis>=DC(<value>)
<rotary axis>=ACP(<value>)
<rotary axis>=ACN(<value>)
Meaning
<rotary axis>:
DC:
ACP:
ACN:
<value>:
Note
The positive direction of rotation (clockwise or counter-clockwise) is set in the machine data.
Note
The traversing range between 0° and 360° must be set in the machine data (modulo behavior)
for positioning with direction specification (ACP, ACN). G91 or IC must be programmed to
traverse modulo rotary axes more than 360° in a block.
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Identifier of the rotary axis that is to be traversed (e.g. A, B or C)
Command for the direct approach to the position
The rotary axis approaches the programmed position directly on the shortest
path. The rotary axis traverses a maximum range of 180°.
Command to approach the position in a positive direction
The rotary axis traverses to the programmed position in the positive direction of
axis rotation (counter-clockwise).
Command to approach the position in a negative direction
The rotary axis traverses to the programmed position in the negative direction
of axis rotation (clockwise).
Rotary axis position to be approached in absolute dimensions
Range of values: 0 - 360 degrees
Geometry settings
9.3 Dimensions
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