M129, M128

[Get lucky]

Well when I came to this shop they use a m129 for tapping not really I'm not to sure never did much tapping before and now I need to tap a left hand and not sure if I would just program with a M4 insted of a M3 or some thing else.

When I looked in the fanuc book It looked like you use M29 so I don't know what to think

machine is a KIA 21 with a fanuc with an oi-tb

Nay help would be great
Kyle

[Superman]

Originally Posted by Get lucky Well when I came to this shop they use a m129 for tapping not really I'm not to sure never did much tapping before and now I need to tap a left hand and not sure if I would just program with a M4 insted of a M3 or some thing else. When I looked in the fanuc book It looked like you use M29 so I don't know what to think machine is a KIA 21 with a fanuc with an oi-tb Nay help would be great Kyle

M-code usually controls a machine feature ( coolant, tailstock etc.)
A cycle is what you would need ( G-code)
the g-code would control the spindle direction

G84 = R/H tapping
G74 = L/H tapping
The M29 may control the syncronising of the axes to the spindle ( couldn't find anything on M129 )

post example

and another