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P a g e
HOME Button – Executes the homing sequence based on selected homing settings.
Reverse - Checking this option will multiply the parameter in the position box with -1 and thus the direction of motion will be
reversed.
Auto Reverse - Checking the auto reverse option will toggle the "reverse" option between two consecutive motion commands, thus
the user does not have to manually reverse the direction of the motion every time.
Axis Position Display (DRO) – Shows the position of the axis based on the
different settings as described below:
Show units - When this option is selected, the data shown will be
converted and shown in units (mm, inches etc), otherwise data will
be displayed in raw encoder counts.
Commanded position - Displays the value of the internal variable for the commanded position for the selected axis.
Load Encoder - Displays the axis position derived from backlash count and selected feedback encoder.
Motor Encoder – Displays the current value of the axis position derived only from the encoder feedback.
10.4 Backlash Compensation
The Apollo III has backlash compensation. Each axis tab in the HiCON plugin has the fields below for controlling
the compensation amount and speed.
Backlash (mm,inch) – This field defines the backlash distance in inches or mm. The Apollo III uses this value to calculate virtual load
position.
Backlash Speed % – This field adjusts the maximum acceleration that the backlash counts can be applied. The Apollo III takes the
max acceleration from the motor tuning and multiplies it by this percentage. Valid values are 10-400 (0.1 to 4 times max
acceleration).
Do not use the native backlash compensation in Mach3. The backlash compensation
in the HiCON plugin is the master and the Mach3 settings are ignored.
10.5 Reversing Direction
If an axis moves the wrong direction, it can be reversed in the Mach3 software.
4. Navigate to the menu bar and click Config->Homing/Limits.
The following window will come up:
FIGURE 71 BACKLASH COMPENSATION
WARNING
Apollo III Using Mach3
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