Siemens Sinumerik 840D Operating Turning page 94

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Settings at the start of a program

For the user it may be advantageous to switch on certain settings, that are

to be activated in the part program, already in the program heading.

If necessary, these modally operative commands can always be reset by

other commands at any stage during the program.

Programming example:

N10 G17 G54 G64 G71 G90 G94

Suggestion of a program heading for a turning application:

Programming example:

N10 G18 G54 G64 G71 G90 G96

N20 DIAMON LIMS=3000

As the tool progresses towards the centre during facing, the spindle speed

evaluated internally in the control unit increases steadily until eventually

the maximum possible spindle speed would be attained.

Depending on the clamping conditions and the size of the work piece a

speed limitation should always be selected for reasons of safety.

* The explanation of the diameter input will be found in section 6 of this

Explanation:

X/Y-plane, 1

continuous control, metrical

system, absolute dimensions,

linear feed rate F in mm/min,

Explanation:

Z/X-plane, 1

continuous control, metrical

system, absolute dimensions,

constant cutting speed S in m/

Diameter input

, speed limitation

840D/828D SINUMERIK Operate

Sinumerik 828d