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num parameter manual - Documentation CN

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7.3 Homing Direction P15<br />

Description<br />

7 - 8 en-938818/4<br />

Category Travels on axes<br />

Type 6 32-bit hexadecimal<br />

No. of words 2<br />

Defines the direction from which the datum switch is approached in homing mode.<br />

Inhibits the switch status test on axes which do not have a datum switch.<br />

Principle<br />

The bit position gives the physical axis address.<br />

Word N0: Specifies the datum switch approach direction in homing mode.<br />

Measurement direction<br />

P15<br />

Min. limit switch Max. limit switch<br />

If the bit is a 1, homing is in the negative direction on the axis.<br />

Word N1: Inhibits the switch status test for axes which do not have a datum switch.<br />

If the bit is a 1, the datum switch is not tested on the corresponding axis.<br />

In homing mode, homing occurs on the first marker pulse encountered.<br />

Programme Parameter<br />

Programme <strong>parameter</strong> E933xx is used to read the value of the homing direction.<br />

UNI-TE request (see UNI-TE Protocol User’s Manual)<br />

+<br />

The direction of homing on the machine zero point can be modified by a UNI-TE request. A reset (<strong>CN</strong>C reset) resets<br />

the <strong>CN</strong>C to the state specified by P15.

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