Program Continuation:

Channel %1 block %2 retraction direction not defined for WAB

%1 = Channel number %2 = Block number, label

In a WAB retraction block with quarter circle or semi-circle (G248 or G348), the end point in the machining plane was not programmed, and either G143 or G140 without tool radius compensation is active.

-    Correction block is reorganized.

-    Local alarm reaction.

-    Interface signals are set.

-    Alarm display.

-    NC Stop on alarm at block end.

Modify part program. The following changes are possible:

Indicate end point in the machining plane in the WAB block.

Activate tool radius compensation (effective for G140 only, not for G143).

State retraction side explicitly with G141 or G142.

Perform retraction with a straight line instead of a circle.

Clear alarm with NC START or RESET key and continue the program.


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