Siemens SINUMERIK 840D sl Function Manual page 187

Machine data
MD24120 $MC_TRAFO_GEOAX_AS‐
SIGN_TAB_1[0]
MD24120 $MC_TRAFO_GEOAX_AS‐
SIGN_TAB_1[1]
MD24120 $MC_TRAFO_GEOAX_AS‐
SIGN_TAB_1[2]
MD24570 $MC_TRAFO5_AXIS1_1[0]
MD24570 $MC_TRAFO5_AXIS1_1[1]
MD24570 $MC_TRAFO5_AXIS1_1[2]
MD24572 $MC_TRAFO5_AXIS1_2[0]
MD24572 $MC_TRAFO5_AXIS1_2[1]
MD24572 $MC_TRAFO5_AXIS1_2[2]
MD25574 $MC_TRAFO5_BASE_ORIENT_1[0]
MD25574 $MC_TRAFO5_BASE_ORIENT_1[1]
MD25574 $MC_TRAFO5_BASE_ORIENT_1[2]
Temperature compensation values in the NC program
The compensation values assigned to axes X and Z are not zero and are applied for
temperature compensation with respect to tool length. The machine axis positions reached in
each case are specified as comments in the program lines.
Program code
$SC_TOOL_TEMP_COMP[0] = -0.3
$SC_TOOL_TEMP_COMP[1] = 0.0
$SC_TOOL_TEMP_COMP[2] = -1.0
N10 G74 X0 Y0 Z0 A0 B0
N20 X20 Y20 Z20 F10000
N30 TRAORI()
N40 X10 Y10 Z10 B90
N50 TRAFOOF
N60 X0 Y0 Z0 B0 C0
N70 M30
With the exception of block N40, temperature compensation always acts in the original
directions, as the tool is pointing in the basic orientation direction. This applies particularly in
block N50. The tool is actually still pointing in the direction of the X axis because the B axis is
Tools
Function Manual, 06/2019, A5E47435126B AA
2.14 Special handling of tool offsets
Value Remark
= 1 Geometry axis for channel axis 1
= 2 Geometry axis for channel axis 2
= 3 Geometry axis for channel axis 3
= 0.0
= 0.0 Direction
= 1.0 First rotary axis is parallel to Z
= 0.0 Direction
= 1.0 Second rotary axis is parallel to Y
= 0.0
= 0.0
= 0.0 Basic tool orientation
= 1.0 In Z direction
Comment
; Compensation value in X
; Compensation value in Z
; Position setpoints of the machine
axes
; X Y Z
; 20.30 20.00 21.00
; 20.30 20.00 21.00
; 11.00 10.00 9.70
; 10.30 10.00 11.00
; 0.30 0.00 1.00
W1: Tool offset
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