Siemens SINUMERIK 840D sl Turning Operating Manual page 679

Parameter
XRI
ZRA
ZRI
Tailstock
XRR
Tool change point
XT
ZT
SC
Mach. direction of rota‐
tion
Program header without multi-channel data
If a program is to be executed through one channel, then deselect multi-channel data. You then
have the option of entering cross-program values into the program header as usual.
Parameter
Multi-channel
data
Measurement unit
Turning
Operating Manual, 06/2019, A5E44903486B AB
Description
- only for a pipe blank
retraction plane X internal ∅ (abs) or
retraction plane X referred to XI (inc)
Retraction plane Z front (abs) or
retraction plane Z referred to ZA (inc)
Retraction plane Z rear – only for retraction "all"
● Yes
● No
Retraction plane tailstock – only "Yes" for tailstock
Tool change point, which must be approached by the revolver with its zero point.
● WCS (Workpiece Coordinate System)
● MCS (Machine Coordinate System)
Notes
● The tool change point must be far enough outside the retraction area that it
is not possible for any tool to protrude into the retraction area while the
revolver is moving.
● Ensure that the tool change point is relative to the zero point of the revolver
and not the tool tip.
Tool change point X ∅
Tool change point Z
The safety clearance defines how close the tool can approach the workpiece in
rapid traverse.
Note
Enter the safety clearance without sign into the incremental dimension.
Milling direction
● Conventional
● Climbing
Description
● No
This is only possible if you are not using a job list.
The setting of the measurement unit in the program header only refers to the
position data in the actual program.
All other data, such as feedrate or tool offsets, are entered in the unit of measure
that you have set for the entire machine.
Multi-channel machining
11.2 Multi-channel support
Unit
mm
rev/min
mm
mm
mm
mm
mm
Unit
mm
inch
679