
7. TROUBLESHOOTING
B–63665EN/01
268
#7
BFF0007
#6 #5 #4 #3
TF
#2 #1 #0
MF
#0(MF) : M function strobe signal
#3(TF) : T function strobe signal
#7(BF) : 2nd auxiliary function strobe signal
#7
G0004
#6 #5
MFIN3
#4
MFIN2
#3 #2 #1 #0
#4(MFIN2) : Second M function completion signal
#5(MFIN3) : Third M function completion signal
#7
G0008
#6 #5
MF3
#4
MF2
#3 #2 #1 #0
#4(MF2) : Second M function strobe signal
#5(MF3) : Third M function strobe signal
* The second and third M functions are enabled only when bit 7 (M3B)
of parameter No. 3404 is set to 1.
Signal End state
Finish signal 0 1
store signal 0 1
CNC is reading an axis command (X,Y,Z,...) in a program and giving the
command to the axis.
CNC is reading a dwell command (G04) in a program and is executing
the dwell command.
Positioning (G00) to a specified position of a specified axis is not
completed.
Whether positioning is completed or not is checked as the servo position
error amount. Check it CNC’s diagnostic function as follows:
DGN no.300
Position Error
> PARAM 1826
In–position width
Position error amount almost becomes 0, when positioning of an axis
completes and when the amount becomes within the in–posiiton width,
it is assumed that positioning completes and the next block is exected.
If position error amount does not become within the in–position width,
refer to servo alarm 400, 4n0 and 4n1.
b.Travel command is being
executed
c. A dwell command is
being executed
d.In–position check
(confirming positioning)
is being done