09.95
Siemens AG 2001 All Rights Reserved 6FC5197–jAA50 4–11
SINUMERIK 840C (IA)
The figure for single display is updated more frequently than the figure for several
axes and spindles.
Note Use the single figure for exact control.
Change to the following axes with “Page down” key.
If you enter the digit “8” and press the search key, e.g. axis 8 can be selected
directly.
You can move back to the previous axes with the “Page up” key.
4.2.2 Service data for the spindle
For optimization and error diagnosis, it is possible to display the current spindle
values.
SSpeed set value (0.01%):
Digital voltage output from the NC on the measuring circuit.
SSpeed set value (rev/min) Progr.:
Value entered by the user;
e.g.: Input S 1000 Display: Speed set value 1000 (rev/min)
SCurrent speed set value:
Currently effective correct-sign current speed set value with calculated over-
ride without speed limitation by setting data or MD.
SActual speed value (rev/min):
The pulses sent by the spindle encoder are evaluated by the NC and dis-
played as speed in rev/min.
SPosition set value:
The spindle position preset in degrees by the user is converted by the NC
intop the corresponding number of pulses,
e.g.: 0_=0
180_= 2048
359_= 4059
SActual position value
The pulses sent by the spindle encoder are evaluated and displayed by the
NC.
SFollowing error:
Difference between position set value and actual position value. In standstill,
the following error is a measure for the position deviation with active M19. A
following error is also displayed in controlled operation.
SError synchronism
Deviation between leading spindle and following spindle
SOverride:
The position of the spindle override switch is displayed.
SGear stage:
The current gear stage is displayed (DB 31 DR K +1 bit 0 to 2).
SParameter set position control
SParameter set speed ratio
Selected parameter set is displayed.
SService No.
The service numbers are listed in the Diagnostics Guide.
4 MMC Area Diagnosis
4.2.1 Selection of service data