ID 90038

Compensation motion within circular motion block.

Description

For comprehending the contour damage in circular blocks the corrected circular angle is compared with the original programmed angle.

If the corrected circular angle is greater than the programmed one, the contour will be damaged. This is referred to as the compensation movement.

The figure above shows that if the direction of rotation is maintained at N20', the equidistant arc would damage the contour.

This may be caused by a relatively small motion block, e.g. smaller than the tool radius. This leads to contour violations when calculating the equidistant path.

When using the contour masking with G141, this error is not output because the closed contour loop will be deleted. In the figure above, this removes the circular motion of N20' and thus no contour damage occurs.

[PROG// Section : Limits of TRC]

Response

Class

2

Abort NC program processing.

Solution

Class

6

Possible solutions are:

• Use a tool with smaller radius
• Use contour masking (G141)

Parameter

%1:

Current value [0.1 µm or 0,0001°]

Corrected circular angle

%2:

Upper limit value [0.1 µm or 0,0001°]

Maximum permissible circular angle

Error type

1, Error message from NC program.