Siemens Sinumerik 840D sl Programming Manual page 156

Fundamentals
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Geometry settings
9.3 Dimensions
Meaning
DIAMON:
DIAM90:
DIAMOF:
DIAMCYCOF:
Note
With DIAMON or DIAM90, the transverse-axis actual values will always be displayed as a
diameter. This also applies to reading of actual values in the workpiece coordinate system with
MEAS, MEAW, $P_EP[x] and $AA_IW[x].
Example
Program code
N10 G0 X0 Z0
N20 DIAMOF
N30 G1 X30 S2000 M03 F0.7
N40 DIAMON
N50 G1 X70 Z-20
N60 Z-30
N70 DIAM90
N80 G91 X10 Z-20
N90 G90 X10
156
Command for the activation of the independent channel-specific diameter program‐
ming.
The effect of DIAMON is independent of the programmed dimensions mode (absolute
dimensions G90 or incremental dimensions G91):
Dimensions in the diameter
● For G90:
● For G91:
Dimensions in the diameter
Command for the activation of the dependent channel-specific diameter program‐
ming.
The effect of DIAM90 depends on the programmed dimensions mode:
● For G90:
Dimensions in the diameter
Dimensions in the radius
● For G91:
Command for the deactivation of the channel-specific diameter programming
Channel-specific radius programming takes effect when diameter programming is
deactivated. The effect of DIAMOF is independent of the programmed dimensions
mode:
Dimensions in the radius
● For G90:
Dimensions in the radius
● For G91:
Command for the deactivation of channel-specific diameter programming during cy‐
cle processing.
In this way, computations in the cycle can always be made in the radius. The last G
function active in this group remains active for the position indicator and the basic
block indicator.
Comment
; Approach starting point.
; Diameter programming off.
; X axis = transverse axis, radius programming
active; traverse to radius position X30.
; The diameter programming is active for the
transverse axis.
; Traverse to diameter position X70 and Z-20.
; Diameter programming for absolute dimensions
and radius programming for incremental dimen-
sions.
; Incremental dimensions active.
; Absolute dimensions active.
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Fundamentals

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