Fagor CNC 8055, Manual

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C 805
5i
Detected errors
Variables POS(X-C) and TPOS(X-C)
The values of variables POS(X-C) and TPOS(X-C) are in the
following units.
• They are read from the CNC in radius or diameter depending on
the setting of a.m.p. "DFORMAT (P1)".
• They are always read in radius from the PLC.
Pockets programming examples
The programming examples for rectangular and circular pockets set
variables "TOR1=6 and TOT1=0". The right variables to be defined
are "TOR1=6 TOI1=0"
I/O board (8055 model)
The fuse of the I/O board has been eliminated.
Improved real block processing time calculation for look-ahead
The value of g.m.p "TLOOK" is calculated as follows:
Execute, in G91 and G51 E0.1, a program with many small blocks,
at least 1000. For example: “X0.1 Y0.1 Z0.1”.
Measure the program execution time, making sure that the machine
does not vibrate. Divide the execution time by 1000 (or the number
of blocks executed) and assign the resulting value, in microseconds,
to g.m.p. "TLOOK (P161)".
To optimize this parameter, decrease the calculated value and
execute the same program until the machine starts vibrating. In
order not to damage the machine, we recommend to begin with the
override switch low and increase its value gradually.
We recommend the use of the oscilloscope function and verify that
the internal variable VLOOKR remains constant which means that
there is no vibration. When configuring the oscilloscope, it is possible
to change g.m.p. "TLOOK", but the new value is only assimed when
executing the G51 function via program.