ID 50449

Start of storage reached during backward movement, no further backward movement possible.

Description

With the function backward motion on the path, the maximum number of backward motion blocks depends on available buffer size P-STUP-00033. With very large NC programs, it may occur that the memory is unable to save all forward motion blocks traversed.

For more information on backward motion see [FCT-C7// Section: Forward/backward motion on the path]

The first parameter in the error message indicates whether it is no longer possible to continue backward motion due to axis positions that were changed outside the NC program. Axis positions which are changed by real-time influences cannot be considered in backward motion since they are not a component of the planned path. Real-time influences that can prevent backward motion include:

  1. The tracking mode (tracking mode)
  2. JogOfPath (see [FCT-C15])
  3. Additive command additional interface in the PLC

Response

Class

1

None.

Solution

Class

1

Increase size of backward buffer memory P-STUP-00033.

Parameter

%1:

Current value [-]

TRUE if further backward motion is not possible due to axis positions changed outside the NC program.

Error type

1, Error message from NC program.