Fagor CNC 8060, Installation Manual

Page: 368 / 698

Installation manual.
CNC 8060
CNC 8065
4.
PLC PROGRAMMIN
G
.
Action instructions.
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(R
EF
: 1709)
4.4.10 Instructions for coordinate latching using a probe or digital input.
Coordinate latching means that the CNC captures the position value of an axis when a given
event occurs. The TOUCHPROBE instruction latches the coordinate of an axis by an event
of a probe, of a physical digital input or of a logic input. The events to be used will be digital
inputs defined in parameters PRBDI1 and PRBDI2.
• If the selected event is a probe and when activating the TOUCHPROBE command the
probe has already reached its logic level (the probe acts either by level or by flank), the
latched coordinate will be the one captured when the command was activated, not that
of the point where the level reaching event occurred.
• If the selected event is a logic input, it may be activated from the PLC program and,
therefore, it may be conditioned indirectly by any other event managed by the PLC.
The coordinate may be latched in any position of the axis travel or a latch window may be
defined. If there is a latch window, coordinate latching may be conditioned to whether the
axis is inside or outside the window.
The following probe-related machine parameters have no effect: PROBEAXIS,
PROBERANGE, PROBEFEED, PRB1MIN, PRB2MIN, PRB3MIN, PRB1MAX, PRB2MAX
and PRB3MAX.
= TOUCHPROBE
Coordinate latching.
The programming format is: Optional parameters are indicated between angle brackets.
TOUCHPROBE (axis,probe<,wintype><,winminpos,winmaxpos>)
The programming units are the standard PLC units. The coordinates the feedrates will be
given in ten-thousandths if they are in mm or degrees or in hundred-thousandths if they are
in inches.
·axis· Name of the axis whose coordinate is being latched.
Name of the axis whose coordinate is being latched; spindles are not admitted, except if they
are active as C axis.
·probe· Number of the probe to be used as latching event.
The names of the probes are set by the order in which the machine parameters have been
defined. Probe 1 will be the one assigned to parameter PRBDI1 and probe 2 will be the one
assigned to parameter PRBDI2.
Instead of a probe, a physical digital input or a logic input may also be used as an event.
In this case, the input bein gused must also be defined in parameter PRBDI1 or PRBDI2.
Parameter Meaning
axis Name of the axis whose coordinate is being latched.
probe Number of the probe to be used as latching event.
wintype Type of window for latching. It is programmed with the commands DISABLE
(without window), EXCLUSIVE (latch outside the window) and INCLUSIVE (latch
inside the window).
winminpos Lower limit for the latch window.
winmaxpos Upper limit for the latch window.
TOUCHPROBE (X, 1, DISABLE)
TOUCHPROBE (X, 1)
TOUCHPROBE (Y, 2, EXCLUSIVE, 1000000, 2300000)
TOUCHPROBE (X3, 1, INCLUSIVE, 500000, 1105000)