Siemens SINUMERIK 840D sl Function Manual page 316

M3: Coupled axes
8.2 Curve tables - 840D sl only
● Axis names from gantry axis groups cannot be used to define a table (only leading axis are
possible).
● Depending on the following machine data, jumps in the following axis may be tolerated if
a movement is missing in the leading axis.
MD20900 $MC_CTAB_ENABLE_NO_LEADMOTION (curve tables with discontinuity of the
following axis)
The other restrictions listed above still apply.
Axis assignment
Does not take effect until coupling is activated with curve table.
Note
The dynamic limit values of the motion commands for a curve table are not checked until
activation or interpolation.
Starting value
The first motion command in the definition of a curve table defines the starting value for the
leading and following value.
All instructions that cause a preprocessing stop must be hidden.
Example 1
Without tool radius compensation, without memory type
Program code
N100 CTABDEF(AX2, AX1, 3,0)
N110 AX1=0 AX2=0
N110 AX1=20 AX2=0
N120 AX1=100 AX2=6
N130 AX1=150 AX2=6
N130 AX1=180 AX2=0
N200 CTABEND
316
Comment
; Start of the definition for the non-
; periodic curve table no. 3
; 1. Motion instruction specifies the start value
; Master value: 0, Following value: 0
; 1. Curve segment: Master value: 0...20,
; Slave value: Starting value ...0
; 2. Curve segment: Master value: 20...100,
; Slave value: 0...6
; 3. Curve segment: Master value: 100...150,
; Slave value 6
; 4. Curve segment: Master value: 150...180,
; Slave value: 6...0
; End of the definition, the curve table
; is generated in its internal representation.
; The advance is reorganized to the status
; at the start of N100
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions