Fagor 8035-M - Page 143

 Installation manual
CNC 8035
MACHINE PARAMETERS
Axis parameters
4.
(SOFT M: V15.3X)
(S
OFT T: V16.3X)
·143·
FBACKDIF (P100)
Axis machine parameter that sets the maximum difference allowed between the first and the second
feedback:
This position difference may be monitored on the oscilloscope using the read variable FBDIF(X-C).
If the value of FBACKDIF (P100)=0, the feedback difference is not monitored. It is recommended
to set a.m.p. FBACKDIF (P100) to a value other than 0.
If the difference between the two feedback readings exceeds the value set in a.m.p. FBACKDIF
(P100), the CNC will show the relevant error message.
MAXDIFAB (P101)
This parameter sets the maximum position difference between that of the CNC and the one shown
by the absolute feedback on power-up.
When using absolute feedback, a.m.p. MASDIFAB (P101)=0, the CNC will show a warning on
power-up indicating that safety is disabled.
If the position value received from the absolute feedback is not the same as that of the CNC and
it is even greater than the value of a.m.p. MAXDIFAB (P101), the CNC will show an error window
on power-up (this window only comes up once in every power-up).
To eliminate this error, select the option "REMOVE ERROR" and press [ENTER]. This way, the axis
will assume the value indicated by the absolute feedback.
If the [EXIT] option is selected or the [ESC] is pressed, the CNC will show the error "Feedback error
on the axis" and will prevent the machine from moving. This error can only be eliminated by starting
the CNC up again and selecting the option "REMOVE ERROR".
Once the error has been removed, if the axis is out of the permitted limits, the CNC will only allow
to move the axes towards the area within the limits.
This error comes up the first time an absolute feedback device is connected or when changing the
offsets of the feedback device. In these cases, once the error has been removed as described earlier,
that error will not come up again.
Possible values
Between 0 and 99999.9999 degrees or millimeters.
Between 0 and 3937.00787 inches.
Default value: 1 mm (for linear axes)
Default value: 1º (for rotary axes)
Possible values
Between 0 and 99999.9999 degrees or millimeters.
Between 0 and 3937.00787 inches.
Default value: 1 mm (for linear axes)
Default value: 1º (for rotary axes)