Siemens SINUMERIK 840D sl Programming Manual

3.8.3 Coarse and fine offsets (CTRANS, CFINE)
Fine offset
A fine offset CFINE(...) can be applied to the following frames:
● Settable frames: $P_UIFR or $P_IFRAME
● Basic frames: $P_NCBFR[<n>], $P_CHBFR[<n>], $P_CHBFRAMES[<n>] or
$P_ACTBFRAME
● Programmable frame: $P_PFRAME
The fine offset of a frame is programmed with the CFINE(...) command.
Coarse offset
A coarse offset CTRANS(...) can be applied to all frames.
Total offset
The total offset results from the addition of the coarse and the fine offset.
Machine data
Enable of the fine offset
The fine offset is enabled with the machine data:
MD18600 $MN_MM_FRAME_FINE_TRANS = 1
Syntax
Fine offset
● Complete frame
– <frame> = CFINE(<K_1>,<value>)
– <frame> = CFINE(<K_1>,<value>, <K_2>, <value>)
– <frame> = CFINE(<K_1>,<value>, <K_2>, <value>, <K_3>, <value>)
● Frame component
– <frame>[<n>, <K_1>, FI] = <value>
Coarse offset
● Complete frame
– <frame> = CTRANS(<K_1>,<value>)
– <frame> = CTRANS(<K_1>,<value>, <K_2,<value>)
– <frame> = CTRANS(<K_1>,<value>, <K_2,<value>, <K_3,<value>)
● Frame component
– <frame>[<n>,<K_1>,TR] = <value>
Work preparation
3.8 Coordinate transformations (frames)
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 639

Siemens SINUMERIK 840D sl Specifications

General

Control Type	CNC
Number of Axes	Up to 31
Max Number of Channels	10
Interfaces	Ethernet, PROFIBUS, PROFINET, USB
Interpolation	5-axis interpolation
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Display	TFT color display, various sizes
Programming Languages	DIN/ISO
Safety Features	Safety Integrated
PLC	Integrated PLC S7-300
Drive Interface	SINAMICS S120
Data Storage	CF card, USB
Operating System	Windows-based