Specifications

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CONCISE GUIDE FANUC 84
This cycle can only be used for right-hand tapping, therefore with entry in direction M3 and coming out in
direction M4. If a left-hand tapping is required, two parameter values have to be changed :parameter 5112
(entry direction of rotation, usually 3) and parameter 5113 (direction of rotation coming out, usually 4) To
execute a tapping on backspindle it’s necessary to change the value of two parameters: parameter 5112
(rotation direction in entry normally 204) and the parameter 5113 (rotation direction in exit normally 203).
At the end of this operation you need to recall the right values of the two parameters 5112 value 3 and
5113 value 4 already inserted by default.
To cancel the tapping cycle it is necessary to program function G80 or any G function in group 01,
therefore G0, G1, G2, or G3.
This cycle can be used both for tapping with offset and for tapping without offset (rigid).
When using rigid tapping, function M29 must be set in the block prior to the G84 cycle.
Example of rigid tapping:
N12 T404 (RIGID TAPPING M10 x 1.5)
N13 G54
N14 G97 S300 M3
N15 G0 X0 Z5 M8
N16 M29 (RIGID TAPPING ACTIVATION)
N17 G84 Z-35 F1.5
N18 G80
N19 G0 X200 Z200
To cancel the rigid tapping cycle, function G80 or any G function of group 01, therefore G0, G1, G2, or G3
must be programmed.