Siemens SINUMERIK 840D Operation & Programming Manual

2
Operation 08.02
2.5 O
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© Siemens AG, 2002. All rights reserved
2-36 SINUMERIK 840D/810D Operator's Guide ManualTurn (BAM) – 08.02 Edition
2.5.5 Absolute and incremental dimensions
Function
You can define the traversing movements of the tool in
incremental and absolute dimensions.
You can mix incremental and absolute dimensions, i.e. one
coordinate in incremental dimensions, the other in absolute
dimensions.
Absolute dimension (ABS)
Absolute dimensions refer to the workpiece zero.
Example
Start point:
X 0
Z 0
ABS
ABS
Start point
ABS
ABS
ABS
ABS
ABS
ABS
ABS
X 60
X 79
X 102
X 120
Z -40
Z -100
Z -160
40
100
160
∅ 60 ∅ 79
∅ 102 ∅
120
Incremental dimension (INC)
Incremental dimensions refer to the momentary position.
Example
Start point:
X 0
Z 0
ABS
ABS
Start point
INC
INC
INC
INC
INC
INC
INC
X 30
X 9.5
X 11.5
X 9.0
Z -40
Z -60
Z -60
4060
60
30
9.5
11.5
9

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