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num parameter manual - Documentation CN

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8.5 Spindle Measurement Conversion P40<br />

Description<br />

8 - 12 en-938818/4<br />

Category Spindles<br />

Type 4 Unsigned decimal<br />

No. of words 4<br />

Used to define the <strong>num</strong>ber of measurement points output by the spindle encoder.<br />

Principle<br />

This <strong>parameter</strong> includes four decimal values that correspond to the <strong>num</strong>ber of measurement points output by the<br />

spindle encoder for one revolution.<br />

The values are expressed as a <strong>num</strong>ber of points per revolution.<br />

Spindle 1 Word N0<br />

Spindle 2 Word N1<br />

Spindle 3 Word N2<br />

Spindle 4 Word N3<br />

REMARK: The use of an encoder requires applying a multiplier of 4 on the input of the axis card.<br />

The internal units depend on the entered values.<br />

The system automatically determines the spindle modulo (<strong>num</strong>ber of measurement units per revolution). The spindle<br />

modulo is the power of two just above or equal to the <strong>num</strong>ber of increments per encoder revolution.<br />

REMARK: The spindle modulo cannot be less than 4096.<br />

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

The spindle measurement conversion can be modified by a UNI-TE request. A reset (<strong>CN</strong>C reset) resets the <strong>CN</strong>C to<br />

the state specified by P40.

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