The Surface Measure macro now contains the M286 command. Previously, in case the operator had incorrectly positioned the probe tool to be in contact with the sensor before the surface measure process would start, the machine would not recognize that the sensor has been triggered before the start of the surface measure (the system would not see the sensor change its state from open to closed, and would therefore assume it is not triggered). This would cause the probe to continue moving down, potentially breaking either the sensor or the working tool. 

The new Surface Measure macro wizard prevents this from happening by adding the M286 macro (automatically generated). This macro checks if the sensor has been triggered before starting to bring down the probe, and if it is, the probe will be lifted up in increments of 1 mm, until the sensor is no longer triggered. After that, the surface measure macro will proceed as normal.