Supplementary Conditions
3.1 Large traverse range
Reference Point Approach (R1)
3-2 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Supplementary conditions
• Linear axes with a traversing range greater than 4,096 encoder revolutions, an EQN 1325
rotary absolute encoder, and an assigned absolute encoder range of:
MD34220 $MA_ENC_ABS_TURNS_MODULO = 4096:
– The maximum possible travel range corresponds to that of incremental encoders.
• Endlessly turning rotary axes with absolute encoders:
– Any number of integer transmission ratios are permitted.
– We recommend that you parameterize endlessly turning rotary axes with absolute
encoders as modulo rotary axes (traversing range 0 to 360 degrees).
MD34220 $MA_ENC_ABS_TURNS_MODULO
Otherwise, the machine axis may require a very long traverse path to reach absolute
zero when the measuring system is activated.
• Machine axes with absolute encoders:
– To ensure that the NC correctly determines the current actual position when the
measuring system is reactivated, the machine manufacturer/user must ensure that the
machine axis is moved less than half the assigned traversing range when the
measuring system is deactivated (POWER OFF, "Parking" selected).
MD34220 $MA_ENC_ABS_TURNS_MODULO
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