HEIDENHAIN TNC 306 Technical Manual - Manual (Page 107)

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TNC 406/TNC 306 1 Machine axes 4-7
1.1.2 Direction of traverse
The machine parameters MP210 and MP1040 determine the direction of traverse for the axes.
The direction of traverse for the axes of numerically controlled machine tools are defined by DIN
(see also under "Axis designation").
MP210 defines the counting direction for the encoder signals. The counting direction depends on
the mounting orientation of the encoders.
MP210 Count direction of the encoder signals
Entry range: 0 to 31
Bit 0 X axis +0 = positive
+1 = negative
Bit 1 Y axis +0 = positive
+2 = negative
Bit 2 Z axis +0 = positive
+4 = negative
Bit 3 Axis 4 +0 = positive
+8 = negative
Bit 4 * Axis 5 +0 = positive
+16 = negative
Machine parameter MP1040 determines the polarity of the nominal value voltage during the positive
direction of traverse.
MP1040 Polarity of nominal value voltage for positive direction of traverse
Entry range: 0 to 31
Bit 0 X axis +0 = positive
+1 = negative
Bit 1 Y axis +0 = positive
+2 = negative
Bit 2 Z axis +0 = positive
+4 = negative
Bit 3 Axis 4 +0 = positive
+8 = negative
Bit 4 * Axis 5 +0 = positive
+16 = negative
* only TNC 406