Siemens SINUMERIK 840Di Function Manual page 1629

Inhibiting stop events for G331/G332
During tapping, a stop can be prevented if the block contains a path movement or a G4.
For this purpose, bit0 must be set to 0 in machine data:
MD11550 STOP_MODE_MASK.
The stop, which was activated previously, is possible again after G331/G332 has been
executed.
2.1.6 Feedrate for G63, tapping with compensation chuck
Application
G63 is a subfunction for tapping threads using a tap with compensating chuck. An encoder
(position encoder) is not required.
Speed S, feedrate F, thread lead
With G63, a speed S must be programmed for the spindle and a feedrate F for the infeed
axis (axis for thread length).
The feedrate F must be calculated by the programmer on the basis of the speed S and the
thread lead.
Feedrate F [mm/min] = speed S [rev/min] * thread lead [mm/rev]
2.2 Feedrate FA for positioning axes
2.2
Syntax
FA[<positioning axis>] = <feedrate value>
Functionality
The velocity of a positioning axis is programmed with axis-specific feedrate FA.
• Effectiveness: modal
• Special points to be noted
Parameter: Positioning axis
• Value range: identifier of channel axes
Feeds (V1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
– No more than 5 axis-specific feedreates can be programmed in each part program
block.
– The feedrate is always G94.
– If no axial feedrate FA is programmed, the axial default:
MD32060 $MA_POS_AX_VELO (initial setting for positioning axis velocity) takes effect.
MD20080 $MC_AXCONF_CHANAX_NAME_TAB
Detailed Description
2.2 Feedrate FA for positioning axes
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