Specifications

01.99 2 Operator Interface

SINUMERIK 840C, OEM Version for Windows (BA)

2-17

When you press the SPINDLE STOP key:

• The spindle speed is reduced down to zero

• The associated LED lights up as soon as SPINDLE STOP is accepted by

the control, for example also with M05 (see Programming Guide).

Example for use of SPINDLE STOP

• To effect tool change

• To enter S, T, H, M functions while setting up (overstoring)

When you press the "Spindle start" key:

• The spindle is enabled. If the spindle has been stopped with SPINDLE

STOP in a program it can be started again with SPINDLE START.

• The associated LED lights up as soon as "Spindle start" is accepted by the

control.

Machine manufacturer

The following is defined in the machine data or setting data:

- Max. spindle speed

- Values for the spindle speed override

(see machine-tool manufacturer’s instructions)

Feedrate/rapid override

The rotary switch with 23 notched positions allows you to reduce or increase

the programmed feedrate value F (corresponds to 100%).

The set feedrate value F is indicated on the screen in %.

0% to 120% of the programmed feedrate.

The 100% value is not exceeded in rapid traverse.

0%, 1%, 2%, 4%, 6%, 8%, 10%, 20%, 30%, 40%, 50%,

60%, 70%, 75%, 80%, 85%, 90%, 95%, 100%, 105%,

110%, 115%, 120%

Spindle stop

Spindle start

Feedrate control

Setting range:

Step size: