Actual value and setpoint sign

It is sometimes necessary to invert the signs of the correcting variable and actual position value to adapt the correcting variable to the hardware used.

Example:

The axis is programmed in the positive direction. In fact, though, the mechanical system moves in the negative direction.

The two entries lr_hw[ ].vz_stellgr and lr_hw[ ].vz_istw can be used for this purpose.

When vz_stellgr is set to 1, the sign of the correcting variable that is output is inverted. When vz_istw is set to 1, increasing the position of the position sensor leads to a reduction of the axis position used in the CNC kernel.

lr_hw[0].vz_stellgr  0
lr_hw[0].vz_istw     0

This entry does not become directly active when the axis parameter list is updated. The control system must be restarted.