# ID 90131

Compensation movement of the TRC selection block not permitted.
Description | A motion block has been marked as a compensation movement for the contour masking process that cannot be eliminated. This movement block is either the first one after selection of TRC with active contour masking, or the first one after selection of contour masking with active TRC.

A cause for it is either a too short movement of the block after the selection of TRC or a too large tool radius.

When using the command #FLUSH CONTINUE in the NC program, the disputed motion block is placed directly before the #FLUSH CONTINUE command.

This is caused by the TRC outputting the control block to flush the channel (#FLUSH CONTINUE) before the faulty motion block since the TRC retains this motion block for the following interpolation point calculation.

Response | Class | 3 | Abort NC program processing.
Solution | Class | 3 | Check and modify the NC program and the used tool.

- Use a tool with a smaller radius.
- Move selection of TRC or contour masking
- When #FLUSH CONTINUE is used, place this command at a different position in the NC program

Parameter | %1: | Block number [-]
Number of the complained motion block.
Error type | 1, Error message from NC program.