Jerking 4th axis

Hello! Please help me solve the problem. I'm assembling a machine with 7i96S and stepper motors first time. This code moves the A rotary axis smoothly when there is only A in one line. But for some reason the A jumps to the next line on those lines where it stands together with linear coordinates, for example Z. I tried G64 in different ways and changed the accelerations, it doesn't help. This file works well on the same machine with Mach with a different controller.

 A16.0362
 A17.7356
 A19.4997
 A21.2732
 Z3.4199 A23.0548
 A24.8434
 Z3.4201 A26.6377
 A28.4363
 A30.2376
 A32.0400
 A33.8418
 A35.6410
 A37.4500
 A39.2592
 Z3.4203 A41.0591
 Z3.4202 A42.8470
 A44.6201
 A46.3754
 A48.1100

Check forum.linuxcnc.org/38-general-linuxcnc-q...88-feed-rate-priorit sounds like the same issue. I also had that issue and rewrote the cam processor to use inverse time feed.

Thanks for the help Hakan! The option with G93 would probably solve the problem. But now there are two other problems. The first is that nc-files are quite complex, they were made a long time ago with a regular F and have been used for many years. The second thing is that you need to change a post processor in the CAM for new codes.

www.ganotechnologies.com/cnc/rapidrotary/
This should take your old file and repost the output.