# 3D distance control (dist_ctrl[i].*)

The following parameters and the functionality of 3D distance control are available as of CNC Build v3.1.3107.44.

This structure consists of elements to determine 3D distance control.

Structure name | index
dist_ctrl[i]. | i = 0 ( only one 3D distance control available in the channel)

## Additional information

- Filtering of sensor values (P-CHAN-00800)
- Maximum position offset (P-CHAN-00801)
- Maximum velocity (P-CHAN-00802)
- Maximum acceleration (P-CHAN-00803)
- Maximum permissible change in velocity of the measured distance (P-CHAN-00804)
- Reference point offset for control measuring system (P-CHAN-00805)
- Upper limit for measuring system (P-CHAN-00806)
- Lower limit for measuring system (P-CHAN-00807)
- Tolerance band for limits (P-CHAN-00808)
- Coupling of distance sensor and motor encoder (P-CHAN-00810)
- Adaptive weighting of acceleration (P-CHAN-00811)
- Low pass filter (P-CHAN-00815)
- Weighting factor for velocity of lowering movement (P-CHAN-00819)
- Weighting factor for acceleration of lowering movement (P-CHAN-00820)
- Weighting the distance control output values (P-CHAN-00821)
- Integral (I) action time of the PID controller (P-CHAN-00822)
- Derivative (D) action time of the PID controller (P-CHAN-00823)
- Filter type for smoothing sensor data (P-CHAN-00825)
- Uncertainty of measured values (P-CHAN-00826)
- Smoothing factor (P-CHAN-00827)