Siemens SINUMERIK 840D Operating Manual

Creating a ShopMill program
7.3 Basic information
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
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The position data points P1 to P3 in absolute dimensions relative to the zero point are the
following:
P1: X20 Y35
P2: X50 Y60
P3: X70 Y20
Incremental dimensions
In the case of production drawings in which dimensions refer to some other point on the
workpiece rather than the zero point, it is possible to enter an incremental dimension.
When incremental dimensions are entered, each item of position data refers to a point
programmed beforehand.
Example
20
15
20
P3
P2
30 2020
P1
Y
X
The position data for points P1 to P3 in incremental dimensions are:
P1: X20 Y35 ;(referred to the zero point)
P2: X30 Y20 ;(referred to P1)
P3: X20 Y-35 ;(referred to P2)

Siemens SINUMERIK 840D Specifications

General

Series	SINUMERIK 840D
Axes	Up to 31
Channels	Up to 10
Operating System	Windows-based
Power Supply	24 V DC
Control Unit Type	CNC
Interface	Ethernet, PROFIBUS
Display	TFT color display
Interpolation	Spline
PLC	Integrated PLC
Data Storage	CompactFlash, USB