Tightening
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6.5.2.27 BCT – Backlash correction (only available for Gauging)
Step type Id: 36
Parameters: T (Torque), TI (Delay time between directional change, DIR (direction to run),
Function: This step measures the lash between the angle transducer on the spindle and the external
load (a bolt or another object that shall be rotated). It does so by running in both directions
until a specified torque is reached and measures the angle between the end points. The
angle measurements in all following steps are compensated with the measured angle every
time the spindle changes direction.
The measurement is done on the angle channel specified as angle channel for Backlash
correction in Program Settings.
1. Run spindle, in opposite direction of DIR until torque is T.
2. Wait time TI.
3. Run spindle in direction DIR until torque is T and measure the angle.
Trace: There are no control parameters for this step type in trace.
Note: The position registers used by the step Run to Position will be reset by the BCT step.
Result var: This step produces the step level result variable “BCT A” which is the angle from the end of
the wait time to torque TC. This angle is used for backlash transportation in following steps.
6.5.2.28 POS - Run to Position (only available for Gauging)
Step type Id: 37
Parameters: Type (1 or 2),
Reference position (Null, Half, Peak, Low)
Position correction (relative to selected position reference, positive or negative)
Auto slow down,
Slow down position (Angle to reduce speed at, if not Automatic slow down)
Low speed (Speed used for last part of movement)
Type 2 parameters:
Adjust to (360 or 720 deg), Min Angle (Minimum angle to run)
Function, type 1:
Run the spindle to an absolute position stored in an earlier step. The target position of the
step is the selected Reference position adjusted with the specified Position correction.
The Position correction can be both positive or negative, meaning after or before the stored
reference position.
Depending on the current position and the calculated target the spindle may run forward or
reverse to reache the target position.
Function, type 2:
Run spindle in direction of previous step. The step calculates the necessary movement to
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