6 – 484 HEIDENHAIN Technical Manual TNC 426, TNC 430
2. Set the traverse range:
You can enter up to three traverse ranges.
(See "Traverse Ranges” on page 6 – 22). Define the software limit switches as
follows:
7
77
7 In the MANUAL operating mode, press the MOD key to select the REF
display. The position displays show the distance to the machine datum
(MP960.x).
7
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7 With the axis direction buttons or the handwheel, move all axes in positive
and negative direction until they almost reach the EMERGENCY STOP limit
switches. Write down the displayed positions with algebraic sign.
7
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7 Enter the noted values in MP91x.x and MP92x.x.
7
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7 Press the MOD key and select the ACTL display.
3. In MP1390 or MP1392, select the type of control:
For control with velocity feedforward:
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7 Enter the temporary input values.
Machine parameter Temporary input value
MP1391 and MP1392 Set to velocity feedforward control
MP1090.0 Enter a very small jerk, e.g. 1
(dependent on the machine)
MP1090.1
MP1092 <greater than rapid traverse>
MP1095 0
MP1096 0
MP1099.0 5
MP1099.1 3
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