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11.90 2 Operation

2.3.2 Operating modes - overview

· Incremental 1 . . . 10 000 jog (CRT display: INC FEED 1 . . . 10 000)

In this operating mode, defined paraxial positioning is possible using the direction keys. The feedrate is fixed with a machine data. Feedrate override (in the range 0% ... 120%) is only possible when the appropriate interface signal is transferred from the PLC to the NC.

MD define whether the set increment (in example shown: 100 µm) will be traversed in continuous mode or jog operation

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ºINC FEED 1 . . . 10 000º basic display

· Actual value setting (CRT display: PRESET)

The directions of movement of an NC machine are based on a right-angled system of coordinates assigned to the individual machine axes.

In the absolute machine coordinate system, control zero can be shifted in comparison to the machine zero point. In ºPRESETº mode, the control zero point can be placed anywhere within the machine coordinate system.

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ºPRESETº basic display

·Repositioning (CRT display: REPOS)

In ºREPOSº mode, the tool can be returned to the point of interruption using the direction keys and the set feedrate value ºFº.

The ºREPOS offsetº display shows the distance from the actual position to the point of interruption, with the correct sign to show the direction of traverse.

When the point of interruption is reached, the ºREPOS offsetº display

is zero; at the same time the direction keys are no longer active.

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ºREPOSº basic display

© Siemens AG 1990 All Rights Reserved 6ZB5 410-0EP02 2-37

SINUMERIK 810T, GA3 (BN)