NC Commissioning with HMI Advanced
11.5 Axes and spindles
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
443
Axis mode
It is possible to switch directly from spindle mode to axis mode, provided the same drive is
used for both modes.
1.
Transition to axis mode by programming the spindles using their axis names or by M70.
2.
If the axis is not synchronized, e.g. position control enabled with M70, the axis has to be
referenced with G74 first. Only then does the mechanical position match the programmed
one.
3.
It is switched over to the current feedforward control mode marked by the machine data
and commands FFWON and FFWOF.
Special features
The following characteristics apply to the axis mode of a spindle:
1.
The feed override switch is active.
2.
IS "Reset" (DB21, ... DBX7.7) does not terminate axis mode as standard.
3.
The interface signals DBB16 to DBB19 and DBB82 to DBB91 in DB31, ... are of no
significance if the IS "Axis/no spindle" (DB31, ... DBX60.0) is set to zero.
4.
Axis mode can be activated in all gear steps. If the position actual value encoder is
installed on the motor (indirect measurement system), the positioning and contouring
accuracy can vary for the different gear stages.
5.
The gear step cannot be changed when the axis mode is active. The spindle must be
switched to control mode. This is done using M41 ... M45.
6.
In axis mode, the machine data of the 1st parameter record (index zero) will apply to be
able to make adaptations.
Master spindle
For example, to be able to use the following spindle functions in a channel, a master spindle
has to be defined in the corresponding channel:
●
G95 Revolutional feedrate
●
Tapping with compensation chuck (G63)
●
Thread cutting (G33)
●
Dwell time in spindle revolutions (G4 S...)
The master spindle is defined in the following machine data:
●
MD20090 $MC_SPIND_DEF_MASTER_SPIND (Position of deletion of the master spindle
in the channel)
The spindle number of the spindle of the channel defined in the following machine data is
entered in the machine data. This spindle should be the master spindle.
●
MD35000 $MA_SPIND_ASSIGN_TO_MACHAX (spindle number)