HEIDENHAIN TNC 335 Technical Manual - Manual (Page 104)

8/95
TNC 360 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 sections "Axis designation" and "Commissioning and start-up procedure").
MP210 defines the counting direction for the measuring system signals. The counting direction
depends on the mounting orientation of the measuring systems.
MP210 Counting direction of the measuring system signals
Input range: 0 to 15
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 4th axis +0 = positive
+8 = negative
Machine parameter MP1040 determines the polarity of the nominal value voltage during the positive
direction of traverse.
MP1040 Polarity of the nominal value voltage for the positive direction of traverse
Input range: 0 to 15
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 4th axis +0 = positive
+8 = negative
The NC uses markers to tell the PLC in which direction the axes are to travel.
0 = positive
1 = negative
Marker Function Set Reset
M2160 Traverse direction X axis NC NC
M2161 Traverse direction Y axis
M2162 Traverse direction Z axis
M2163 Traverse direction 4th axis