Siemens SINUMERIK 840D sl Programming Manual page 189

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Read measurement result

The measurement result is available for the axes acquired with probes in the following

• Under $AA_MM[axis] in the machine coordinate system

• Under $AA_MW[axis] in the workpiece coordinate system

No internal preprocessing stop is generated when these variables are read.

A preprocessing stop must be programmed with STOPRE at the appropriate position in the

program. The system will otherwise read false values.

Programming measuring blocks, MEAS, MEAW

When command MEAS is programmed in conjunction with an interpolation mode, actual

positions on the workpiece are approached and measured values recorded simultaneously.

The distance-to-go between the actual and setpoint positions is deleted.

The MEAW function is employed in the case of special measuring tasks where a programmed

position must always be approached. MEAS and MEAW are non-modal commands.

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Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0

5.7 Measurements with touch trigger probe (MEAS, MEAW)

G... X... Y... Z...

Special Motion Commands

(+1/+2 measurement with deletion of

distance-to-go and rising edge)

(–/– measurement with deletion of

distance-to-go and falling edge)

(+1/+2 measurement without deletion

of distance-to-go and rising edge)

(–/– measurement without deletion of

distance-to-go and falling edge)