Start-Up
4-34
SINUMERIK 802S base line
Start-Up
4.7.2 Starting up the axes
Overview
The SINUMERIK 802S base line has up to three stepper motor feedrate axes
(X, Y and Z). The stepper motor drive signals are output at connector X7 for
the:
z
X axis (SW1, BS1, RF1.1, RF1.2)
z
Y axis (SW2, BS2, RF2.2, RF2.2)
z
Z axis (SW3, BS3, RF3.1, RF3.2)
z
Spindle(SW4, RF4.1, RF4.2)
Additional axes
The 2nd axis in the axis order, which when milling has the function of the Y axis
can be used as an additional axis when turning. This is achieved by loading
one of the files “turnax_U.ini” or “turnax_V.ini” or “turnax_W.ini” from the
Toolbox and enabling these data.
Which files are selected is dependent on the desired axis name: U or V or W.
The additional axis is a linear axis with limited functionality, compared with the
axes X and Z. It can be traversed together with the remaining axes. If the
additional axis is traversed in a program block that contains G1 or G2/G3,
using the axes (X, Z), then it will not be assigned a component of the feedrate
F. In this case, the axis’ speed will depend on the path travel time of the axes X,
Z. Its motion starts and ends together with the axes X, Z. The axis speed,
however, cannot be greater than the limit value defined for the additional axis.
If the additional axis is programmed in a separate block, it will travel with the
active feedrate F if G1 is programmed.
Both settable offsets (G54 ... G57) and programmable offsets (G158) are
possible for the additional axis. Tool offsets are not effective in this axis.
Simulation/stepper motor drive
Setpoint output and pulse feedback can be switched between simulation and drive
operation using the axis MD 30130_CRTLOUT_TYPE and 30240_ENC_TYPE.
Table 4–12
MD Simulation Normal Operation
30130 Value = 0
To test the axis, the actual value
is fed back internally as an
actual value. No setpoint output
at connector X7.
Value = 2
The setpoint signals for stepper
motor operation are output at
connector X7. Real axis traversal
is possible using a servo motor.
30240 Value = 0 Value = 3
Internal pulse feedback from
setpoint output to actual value
input “ON”
Machine data default settings for stepper motor axes
The machine data list bloew contains the default machine data and their
recommended settings with stepper motor axes connected.
After the machine data have been set, the stepper motor axes are ready to
traverse, as far as the machine data are concerned, and only fine adjustments
are required.
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