Working with incremental polar coordinates, a block is executed where the end position has a negative radius.

The various causes might be:

1. When trying to search home on all the axes manually, but there is no associated subroutine indicating the home searching sequence (order).
2. "G74" has been programmed, but there is no associated subroutine indicating the home searching sequence (order).

Incremental polar coordinate programming allows negative radius, but the (absolute)

end point of the radius must be positive, G74 ‘There is no subroutine associated with G74’ The solution for each cause is:

1. An associated subroutine is required to execute the "G74" function.
2. If "G74" is to be executed from a program, the home searching order must be defined.