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4 - Fagor Automation

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Canned cycles (·M· model)<br />

1.1.1 Definition, Influence zone and cancellation of a canned cycle.<br />

Definition of a canned cycle.<br />

The canned cycles are defined using the relevant "G" function and its associated parameters.<br />

The canned cycle may be defined anywhere in the program, in the main program as well as<br />

in a subroutine.<br />

Executing a canned cycle does not change the history of the previous "G" functions and<br />

maintains the spindle turning direction. If it is stopped, it starts clockwise (M03).<br />

Influence zone of a canned cycle<br />

The canned cycle is modal. Once a canned cycle has been defined, by program or MDI/MDA,<br />

it stays active until its cancellation is programmed or until one the conditions that cancels<br />

it occurs.<br />

While the canned cycle is active, all the blocks that are programmed are under the influence<br />

of that canned cycle. If inside the influence zone of the canned cycle, a motion block is<br />

executed, the CNC makes the programmed move and then executes the machining<br />

operation corresponding to the canned cycle. If there is a motionless block inside the<br />

influence zone of a canned cycle, the CNC does not repeat the active canned cycle.<br />

If inside the influence zone of a canned cycle, a motion block is program containing a number<br />

of repetitions (NR command), the CNC executes the programmed movement and the canned<br />

cycle the programmed number of times. If the number of repetitions is zero, NR0, the CNC<br />

will only execute the programmed movement.<br />

G99 G81 Z2 I-20<br />

Definition and execution of the drilling canned cycle.<br />

G90 G01 X85<br />

Move to point X85 and drill a new hole.<br />

G91 Y85 NR3<br />

The CNC repeats the movement and the drilling three times.<br />

G90 G01 X0 NR0<br />

Move to point X0 without drilling.<br />

Canned cycle cancellation<br />

A cycle is cancelled as follows.<br />

Function G80, which can be programmed in any block.<br />

After defining a new canned cycle. The new canned cycle cancels and replaces any other<br />

cycle that may be active.<br />

After executing M02, M30 or after an emergency or reset.<br />

When doing a home search using function G74.<br />

Selecting another longitudinal axis, with G20 or with #TOOL AX.<br />

Selecting a new work plane.<br />

1.<br />

MILLING CANNED CYCLES.<br />

General concepts<br />

CNC 8065<br />

(REF: 1209)<br />

·25·

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