Siemens SINUMERIK 840D User Manual

B500
B500 Page 18 840D/828D SINUMERIK Operate
Notes
Milling Section 5
Unit
α0
Rotation angle Degrees
α0
(circular slot)
Start angle Degrees
α1
(circular slot)
Opening angle of the slot Degrees
α1
(Engraving)
Text direction
(only for linear alignment)
Degrees
α1
(contour)
Starting direction relative to X-axis Degrees
α1
(circular slot)
Opening angle of the slot Degrees
α2
(circular slot)
Advancing angle
(only for pitch circle)
Degrees
α2
(contour)
angle to previous element Degrees
αS
(Thread-
Milling)
Starting angle Degrees
Leaving
(Path milling)
Leaving mode plane
Quarter circle:
Part of a spiral ()
Semi circle:
Part of a spiral (only for path milling to the
left and the right of the contour)
Straight:
Leaving
strategy
(Path milling)
Axis-by-axis
spatial

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