A Axis appearing in Openbuilds Control interface

Today I had a few issues with Openbuilds Control, the A axis appeared underneath the Z axis.

I had to close Control to get it to go away, disconnecting from controller and reconnecting didn't help.

Anyone seen this before?

Cheers
Matt

 

Thanks for the quick reply Peter - suspect you are right. Later I received a couple of feed hold alerts which were spurious. I am running a high frequency plasma cutter.....

 

Just ordered a non-hf blow back Lotos to replace it!