<block change>: Block change behavior
The block change is:
"NOC" Immediately
"FINE" On reaching "Synchronism fine"
"COARSE" On reaching "Synchronism coarse"
"IPOSTOP" On reaching IPOSTOP; in other words, after setpoint-
based synchronism (default)
The block change behavior is effective modally.
<coupling type>: Coupling type: Coupling between FS and LS
"DV" Setpoint linkage (default)
"AV" Actual value coupling
"VV" Speed coupling
The coupling type is modal.
<POSFS>: Angle offset between leading and following spindles
Range of val‐
ues:
0°… 359.999°
<POSFS>,<POSLS>: Switch-off positions of the following and leading spindles
"The block change is enabled once POS
FS
, POS
LS
has been passed"
Range of val‐
ues:
0°… 359.999°
Examples
Working with leading and following spindles
Program code Comment
Leading spindle = master spindle = spindle 1
Following spindle = spindle 2
N05 M3 S3000 M2=4 S2=500 Leading spindle rotates at 3000 rpm,
following spindle at 500 rpm.
N10 COUPDEF(S2,S1,1,1,"NOC","Dv") Definition of the coupling (can also be config-
ured).
...
N70 SPCON Bring leading spindle into closed-loop position
control (setpoint coupling).
N75 SPCON(2) Bring following spindle into closed-loop posi-
tion control.
N80 COUPON(S2,S1,45) On-the-fly coupling to offset position = 45 de-
grees.
...
N200 FA[S2]=100 Positioning speed = 100 degrees/min
N205 SPOS[2]=IC(-90) Traverse with 90 degrees overlay in negative di-
rection.
N210 WAITC(S2,"Fine") Wait for "fine" synchronism.
N212 G1 X... Y... F... Machining
...
Work preparation
3.16 Axis couplings
NC programming
926 Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
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