Problem with Control Comp on Heidenhain

[jswickJ9PWC]

I've only been using Fusion for 3 months after spending 15 years with Mastercam, so forgive me if this is an easy fix. I'm also running a control I've never used before (Heidenhain 530) so it's a double whammy for me.

Most of the time I program with In Control comp (not what I'm used to, but what this new shop likes) and I have no issues with the program running, but occasionally I will get a "Tool Radius Too Large" error. This doesn't always happen right away, sometimes it will be halfway through a program after having cut similar features.

I'm not sure what setting in Fusion affects this. I've made sure the numbers in the control are correct and match the numbers in Fusion so I'm guessing it has to do with the tolerance fields (?) but I don't understand yet how those affect the toolpath.

Can anyone explain them to me or point me to the literature?

[johnswetz1982]

That will generally be your [Horizontal Lead-in] distance on the [Linking] tab (last page). Your leading needs to be larger than the radius of the tool when the control/code changes from an uncompensated move to a compensated move.

[jswickJ9PWC]

Unfortunately it happens when it is already in the cut, after the comp has been applied and has already successfully cut all the code before this magic arc that makes it alarm.

[a.laasW8M6T]

If you put a R5 cutter into a corner that is specified as R5 for exampleit can throw this error, but this is pretty unlikely to be happening in Fusion,
what it could be though, that I have experienced using Cutter Comp on the iTNC530 control is if you have a BASIC Rotation applied sometimes the control freaks out at random points with that error. I have found that changing the rotation by a small amount will fix the issue(like 0.0001 degrees)